Wear-resistant metal corrugated pipe expansion joint

Abstract

The utility model relates to the technical field of corrugated pipe expansion joints, in particular to a wear-resistant metal corrugated pipe expansion joint which comprises a pipeline body, a first flange plate is fixedly connected to one end of the pipeline body, a second flange plate is fixedly connected to the other end of the pipeline body, and a compensation structure is arranged on the pipeline body. The compensation structure comprises a first corrugated pipe, the first corrugated pipe is installed on the pipeline body, a second corrugated pipe is installed on the pipeline body, a third corrugated pipe is installed on the pipeline body, and the pipeline body is fixedly connected with a plurality of fixing plates. Pull rods are installed on the outer sides of the first corrugated pipe, the second corrugated pipe and the third corrugated pipe, nuts are installed at the two ends of each pull rod, and a plurality of inner sleeves are arranged in the pipeline body. According to the scheme, by designing a compensation structure, when the conveying pipeline is used, telescopic compensation can be conducted in multiple directions, so that the conveying pipeline can be protected, and the service life of the conveying pipeline is prolonged. And the service life of the conveying pipeline is effectively prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of bellows expansion joints, and in particular to a wear-resistant metal bellows expansion joint. Background Art

[0002] A bellows expansion joint is a device used to compensate for displacement in a piping system caused by temperature changes, mechanical vibrations, and other factors. It is primarily composed of a bellows, end pipes, brackets, and a guide tube. When the pipe expands and stretches due to temperature increases or contracts due to temperature decreases, the bellows expansion joint utilizes the elastic deformation of the bellows to absorb these displacements.

[0003] Currently, when using bellows expansion joints, it is found that existing bellows expansion joints usually use a single direction for compensation, which makes the bellows expansion joint have certain limitations and thus affects the service life of the transportation pipeline. Therefore, to solve the above problem, the present application provides a wear-resistant metal bellows expansion joint. Utility Model Content

[0004] In order to solve the problem that existing bellows expansion joints usually use a single direction for compensation, the present application provides a wear-resistant metal bellows expansion joint.

[0005] The present application provides a wear-resistant metal bellows expansion joint, including a pipe body, which is arranged in an L-shape, a first flange fixedly connected to one end of the pipe body, and a second flange fixedly connected to the other end of the pipe body, a compensation structure is provided on the pipe body, and the compensation structure includes a first bellows, the first bellows is installed on the pipe body, a second bellows is installed on the pipe body, a third bellows is installed on the pipe body, a plurality of fixing plates are fixedly connected to the pipe body, pull rods are installed on the outside of the first bellows, the second bellows and the third bellows, nuts are installed on both ends of the pull rods, and a plurality of inner sleeves are provided inside the pipe body.

[0006] Preferably, the second bellows is arranged between the first bellows and the third bellows, and the second bellows is vertically arranged on the pipe body.

[0007] Preferably, the first bellows and the third bellows are both horizontally arranged on the pipe body.

[0008] Preferably, three of the plurality of inner sleeves are provided, and the three inner sleeves are correspondingly provided on the inner sides of the first bellows, the second bellows and the third bellows.

[0009] Preferably, one end of the three inner sleeves is welded to the inner side of the first bellows, the second bellows and the third bellows respectively.

[0010] In summary, this application has the following beneficial technical effects:

[0011] By designing a compensation structure, when the conveying pipeline is in use, the pipeline body is installed on the transport pipeline through the first flange and the second flange, and then the pipeline body is subjected to lateral expansion and contraction compensation through the first bellows and the third bellows, while the pipeline body is subjected to longitudinal expansion and contraction compensation through the second bellows. During expansion and contraction compensation, the compensation direction is limited by the pull rod, and the compensation distance is controlled by the nut on the pull rod. Compared with the existing technology, this design can perform expansion and contraction compensation from multiple directions, thereby protecting the conveying pipeline and effectively extending the service life of the conveying pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the overall structure of the device in the embodiment of the present application;

[0013] Figure 2 This is a schematic structural diagram of the rear side of the device in an embodiment of the present application;

[0014] Figure 3 This is a schematic diagram of the bottom structure of the device in the embodiment of the present application;

[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of the device in the embodiment of the present application.

[0016] Explanation of the accompanying drawings: 1. Pipe body; 2. First flange; 3. Second flange; 4. Compensating structure; 5. First bellows; 6. Second bellows; 7. Third bellows; 8. Fixing plate; 9. Pull rod; 10. Nut; 11. Inner sleeve. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1 - Figure 4 This application is described in further detail.

[0018] Example:

[0019] A wear-resistant metal bellows expansion joint used for expansion and contraction compensation of transport pipelines, Figure 1 , including a pipeline body 1, the pipeline body 1 is set in an L shape, and transportation is facilitated by the pipeline body 1. One end of the pipeline body 1 is fixedly connected to a first flange 2, and the other end of the pipeline body 1 is fixedly connected to a second flange 3. The first flange 2 and the second flange 3 facilitate the installation of the pipeline body 1. A compensation structure 4 is provided on the pipeline body 1. The compensation structure 4 facilitates expansion and contraction compensation of the transport pipeline, so that the transport pipeline can simultaneously perform horizontal and vertical expansion and contraction compensation;

[0020] When in use, the pipe body 1 is installed on the transport pipe through the first flange 2 and the second flange 3, and then the compensation structure 4 is used to facilitate the expansion and contraction compensation of the transport pipe, so that the transport pipe can simultaneously perform horizontal and vertical expansion and contraction compensation, thereby protecting the transport pipe.

[0021] Reference Figure 2 - Figure 4 The compensation structure 4 includes a first bellows 5, which is installed on the pipe body 1, a second bellows 6 is installed on the pipe body 1, a third bellows 7 is installed on the pipe body 1, and the second bellows 6 is arranged between the first bellows 5 and the third bellows 7. The first bellows 5 and the third bellows 7 are both arranged horizontally on the pipe body 1, and the pipe body 1 can perform lateral expansion and contraction compensation through the first bellows 5 and the third bellows 7. The second bellows 6 is vertically arranged on the pipe body 1, and the pipe body 1 can perform longitudinal expansion and contraction compensation through the second bellows 6. The pipe body 1 is fixedly connected with a plurality of fixing plates 8, which facilitate the installation of the pull rod 9 through the fixing plate 8. The first bellows 5, the second bellows 5 and the third bellows 7 are arranged horizontally on the pipe body 1. A pull rod 9 is installed on the outside of the tube 6 and the third bellows 7. The pull rod 9 is used to facilitate the control of the direction of telescopic compensation. Nuts 10 are installed on both ends of the pull rod 9. The nuts 10 are used to facilitate the limitation of the compensation distance. A plurality of inner sleeves 11 are provided inside the pipeline body 1. The inner sleeves 11 facilitate the flow of liquid or gas, and prevent the liquid and gas from flowing into the gap between the bellows. There are three inner sleeves 11, and the three inner sleeves 11 are correspondingly arranged on the inside of the first bellows 5, the second bellows 6 and the third bellows 7. One end of the three inner sleeves 11 is welded to the inside of the first bellows 5, the second bellows 6 and the third bellows 7 respectively. The welding position of the inner sleeve 11 corresponds to the flow direction inside the conveying pipeline.

[0022] When in use, the first bellows 5 and the third bellows 7 allow the pipe body 1 to perform lateral expansion and contraction compensation, while the second bellows 6 allows the pipe body 1 to perform longitudinal expansion and contraction compensation. During expansion and contraction compensation, the pull rod 9 limits the compensation direction, and the nut 10 on the pull rod 9 controls the compensation distance.

[0023] The embodiment of the present application is a wear-resistant metal bellows expansion joint, and its working principle is as follows: when in use, the pipe body 1 is installed on the transportation pipe through the first flange 2 and the second flange 3, and then the pipe body 1 is compensated for lateral expansion and contraction through the first bellows 5 and the third bellows 7, and the pipe body 1 is compensated for longitudinal expansion and contraction through the second bellows 6. During expansion and contraction compensation, the compensation direction is limited by the pull rod 9, and the compensation distance is controlled by the nut 10 on the pull rod 9.

[0024] The above describes an exemplary implementation of a wear-resistant metal bellows expansion joint provided by the present disclosure with reference to a preferred embodiment. However, it will be understood by those skilled in the art that, without departing from the concept of the present disclosure, various variations and modifications may be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure may be combined in various ways without exceeding the scope of protection of the present disclosure, which is determined by the appended claims.

Claims

1. A wear-resistant metal bellows expansion joint, comprising a pipe body (1), characterized in that: The pipe body (1) is configured to be L-shaped, one end of the pipe body (1) is fixedly connected to a first flange (2), and the other end of the pipe body (1) is fixedly connected to a second flange (3). A compensation structure (4) is provided on the pipe body (1), and the compensation structure (4) includes a first bellows (5), which is installed on the pipe body (1), a second bellows (6) is installed on the pipe body (1), and a third bellows (7) is installed on the pipe body (1). The pipe body (1) is fixedly connected to a plurality of fixing plates (8), and pull rods (9) are installed on the outside of the first bellows (5), the second bellows (6) and the third bellows (7), and nuts (10) are installed at both ends of the pull rods (9). A plurality of inner sleeves (11) are provided inside the pipe body (1).

2. The wear-resistant metal bellows expansion joint according to claim 1, characterized in that: The second bellows (6) is arranged between the first bellows (5) and the third bellows (7), and the second bellows (6) is vertically arranged on the pipe body (1).

3. The wear-resistant metal bellows expansion joint according to claim 1, characterized in that: The first corrugated pipe (5) and the third corrugated pipe (7) are both horizontally arranged on the pipe body (1).

4. The wear-resistant metal bellows expansion joint according to claim 1, characterized in that: There are three of the plurality of inner sleeves (11), and the three inner sleeves (11) are correspondingly arranged inside the first bellows (5), the second bellows (6), and the third bellows (7).

5. The wear-resistant metal bellows expansion joint according to claim 4, characterized in that: One end of the three inner sleeves (11) is welded to the inner side of the first bellows (5), the second bellows (6) and the third bellows (7) respectively.

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