Long-service-life disc type vacuum welding corrugated pipe

Abstract

The utility model provides a disc type vacuum welding corrugated pipe with long service life, which relates to the technical field of industrial pipes, and comprises a pipe body, the pipe body adopts a double-wall structure, a lining layer is arranged in the pipe body, and through the cooperation of an inner blocking sleeve, an extension part, a welding point, a first metal lamination and a second metal lamination, when the whole body is operated, the lining layer can be conveniently welded. By arranging the first metal lamination sheets and the second metal lamination sheets, the contact area of the pipe body in a pressed state can be increased, so that the overall compression rate is higher under the same external pressure condition, external pressure load can be dispersed under the cooperation of the multiple convex corrugation groups, and the service life of the pipe body is prolonged. And the outer diameter of the convex corrugation group is larger than that of the corrugation structure, so that the transverse rigidity and the pressure-bearing area of the pipe body are increased, the pressure resistance is further improved, the local stress level is reduced, the bending resistance of the pipe body is improved, and the overall service life is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial pipes, in particular to a long-life disc type vacuum welded bellows. Background Art

[0002] Bellows are used in many industries, mainly for conveying liquids. Flexible, pressure-resistant pipes such as stainless steel bellows are used in many pipeline extensions or equipment connections. In the process of biological sewage treatment, sludge needs to be discharged, and bellows are widely used in sludge discharge.

[0003] However, the existing bellows are solid wall structures, and their ability to resist external pressure loads is insufficient. They are easy to deform, break, and wear. When in contact with hard media, the pipes may crack and deform. When performing multiple bending operations, the pipe wall of the bellows is prone to friction with the outside world or being in external bending strength for a long time, causing the bellows to crack and break, and the service life is short. Therefore, it is necessary to propose a new type of long-life disc-type vacuum welded bellows. Utility Model Content

[0004] The purpose of the utility model is to solve the problems that the bellows has a solid wall structure, has insufficient resistance to external pressure load, is easy to deform, break and wear, and may crack and deform when in contact with hard media. When performing multiple bending operations, the wall of the bellows is prone to friction with the outside world or is in external bending strength for a long time, resulting in cracks and damage to the bellows, and a short service life. A long-life disc-type vacuum welded bellows is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a long-life disc-type vacuum welded bellows, including a tube body, the tube body adopts a double-wall structure, an inner lining layer is arranged inside the tube body, a corrugated structure is arranged outside the tube body, the left and right ends of the tube body are connected with an inner plug sleeve, the inner plug of the inner plug sleeve is connected with an extension part, a welding point is arranged inside the side end of the extension part, and a first metal laminate and a second metal laminate are respectively arranged at the side ends of the welding point, and the first metal laminate and the second metal laminate are made of the same material and have the same structure.

[0006] Preferably, a plurality of convex corrugation groups are equidistantly arranged at the side ends of the corrugated structure, the plurality of convex corrugation groups are equidistantly arranged at the bending points of the corrugated structure, and the outer diameters of the plurality of convex corrugation groups are larger than the outer diameter of the corrugated structure.

[0007] Preferably, the corrugated structure is arranged with two groups of corrugations being symmetrical, an arc cutting block is arranged at the left outer side pattern end of the corrugated structure, and a bevel cutting block is arranged at the right outer side pattern end of the corrugated structure.

[0008] Preferably, transversely folded fine steel sheet ribs and fine steel sheet ribs are respectively arranged on the inner sides of the corrugated structure, and the transversely folded fine steel sheet ribs and fine steel sheet ribs are inserted into but not penetrated through the sides of the corrugated structure.

[0009] Preferably, the structures of the plurality of groups of convex corrugation groups and the corrugated structure are the same.

[0010] Preferably, the outer wall surfaces of the contact gaps between the tube body and the multiple groups of convex corrugations and the corrugated structure are coated with a fireproof layer.

[0011] Preferably, the outer surfaces of the plurality of groups of convex corrugation groups and the corrugated structure are all provided with anti-slip patterns.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, the inner stopper sleeve, the extension part, the welding point, the first metal laminate and the second metal laminate cooperate to make it possible to withstand a large compressive force without plastic deformation when the whole is in operation, and the arrangement of the first metal laminate and the second metal laminate can increase the contact area of ​​the pipe body under pressure, so that under the same external pressure conditions, the overall compression rate is greater.

[0014] 2. In the utility model, the cooperation of multiple groups of convex corrugation groups is conducive to dispersing the external pressure load and improving the compressive resistance of the pipe body. The outer diameter of the convex corrugation group is larger than the outer diameter of the corrugated structure, which increases the lateral stiffness and pressure-bearing area of ​​the pipe body and further improves the compressive resistance. The corrugated structure is arranged so that two groups of corrugations are symmetrical, which helps to maintain balanced force on the pipe body and prevent distortion or displacement caused by asymmetric force, thereby causing damage to the pipe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main structure schematic diagram of a long-life disc-type vacuum welded bellows;

[0016] Figure 2 The utility model provides a schematic diagram of the installation structure of an inner plug sleeve of a long-life disc-type vacuum welded bellows;

[0017] Figure 3 The utility model provides a schematic diagram of the installation position structure of a convex corrugation group of a long-life disc-type vacuum welded bellows;

[0018] Figure 4 The utility model proposes a long-life disc type vacuum welded bellows Figure 1 Enlarged structural diagram at A in the middle.

[0019] Legend: 1. Tube body; 2. Inner plug sleeve; 3. Extension part; 4. Welding point; 5. First metal laminate; 6. Corrugated structure; 7. Convex corrugation group; 8. Arc cutting block; 9. Bevel cutting block; 10. Horizontally folded fine steel sheet reinforcement; 11. Fine steel sheet reinforcement. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] Example 1

[0023] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a long-life disc-type vacuum welded bellows, comprising a tube body 1, the tube body 1 adopts a double-wall structure, an inner lining layer is arranged inside the tube body 1, a corrugated structure 6 is arranged outside the tube body 1, the left and right ends of the tube body 1 are plugged with an inner plug sleeve 2, the inner plug of the inner plug sleeve 2 is plugged with an extension part 3, a welding point 4 is arranged inside the side end of the extension part 3, and the side ends of the welding point 4 are respectively provided with a first metal laminate 5 and a second metal laminate, the first metal laminate 5 and the second metal laminate are made of the same material and have the same structure, a plurality of groups of convex corrugation groups 7 are equidistantly arranged at the side end of the corrugated structure 6, the plurality of groups of convex corrugation groups 7 are equidistantly arranged at the bending point of the corrugated structure 6, the outer diameter of the plurality of groups of convex corrugation groups 7 is larger than the outer diameter of the corrugated structure 6, the corrugated structure 6 is arranged to have two groups of corrugations symmetrically, an arc cutting block 8 is arranged at the left outer side pattern end of the corrugated structure 6, and a bevel cutting block 9 is arranged at the right outer side pattern end of the corrugated structure 6.

[0024] In this embodiment, by setting the pipe body 1 as a double-wall structure, an inner lining layer is set inside the pipe body 1, and a corrugated structure 6 is set outside the pipe body 1, so that the inner lining layer and the corrugated structure 6 cooperate to make the internal medium and the pipe wall have good contact and sealing, and the corrugated structure 6 is used to improve the overall external pressure resistance and flexibility of the pipe body 1. When in use, the inner plug sleeve 2 is plugged into the left and right ends of the pipe body 1 to enhance the end sealing and connection stability. Then, the extension part 3 is located at both ends of the pipe body 1. According to the needs, the first metal laminate 5 and the second metal laminate are laser welded at the welding point 4. Then, under the cooperation of the first metal laminate 5 and the second metal laminate, it is convenient to withstand a large compression force without plastic deformation when the whole is in operation. The arrangement of the first metal laminate 5 and the second metal laminate can increase the contact area of ​​the pipe body 1 under pressure, so that under the same external pressure conditions, the overall compression rate is greater. Then, multiple groups of convex corrugated groups 7 are equidistantly arranged at the bend of the corrugated structure 6 The equidistant arrangement of the points is conducive to dispersing the external pressure load and improving the compressive resistance of the pipe body 1. The outer diameter of the convex corrugation group 7 is larger than the outer diameter of the corrugated structure 6, which increases the lateral stiffness and pressure-bearing area of ​​the pipe body 1 and further improves the compressive resistance. At the same time, the corrugated structure 6 is arranged as two groups of corrugations that are symmetrical, which helps to keep the force on the pipe body 1 balanced and prevent distortion or deviation caused by asymmetric force, thereby causing damage to the pipe body 1. With the arrangement and coordination of the arc cutting block 8 and the bevel cutting block 9, when the whole is compressed, the arc cutting block 8 can form a corresponding matching relationship with the concave part of the adjacent corrugation (wherein the arc cutting block 8 is not limited to using a semicircular, elliptical or other arc structure), which is convenient for dispersing local stress and preventing the corrugated structure from being locally damaged due to stress concentration, thereby enhancing the structural stability. At the same time, the arc contour of the arc cutting block 8 and the inclined surface design of the bevel cutting block 9 are also conducive to guiding and alleviating the impact of external pressure, further improving the impact resistance of the pipe body 1, reducing the local stress level, improving the bending resistance of the pipe body 1, and effectively improving the overall service life.

[0025] Example 2

[0026] like Figure 1-Figure 4 As shown, transverse folded fine steel sheet ribs 10 and fine steel sheet ribs 11 are respectively arranged on the inner sides of the corrugated structure 6, and the transverse folded fine steel sheet ribs 10 and fine steel sheet ribs 11 are inserted into but not penetrated through the sides of the corrugated structure 6. The structures of the multiple groups of convex corrugations 7 and the corrugated structure 6 are the same, and the outer wall surfaces of the contact gaps between the tube body 1 and the multiple groups of convex corrugations 7 and the corrugated structure 6 are coated with a fireproof layer, and the outer surfaces of the multiple groups of convex corrugations 7 and the corrugated structure 6 are provided with anti-slip patterns.

[0027] In this embodiment, with the cooperation of the transversely folded fine steel sheet ribs 10 and the fine steel sheet ribs 11, it is convenient to enhance the local strength and rigidity of the corrugated structure 6. When subjected to large internal or external pressure, the mutual support of the transversely folded fine steel sheet ribs 10 and the fine steel sheet ribs 11 can effectively prevent the corrugated structure 6 and the multiple groups of convex corrugations 7 from excessive deformation or collapse. At the same time, the transversely folded shape design of the transversely folded fine steel sheet ribs 10 helps to disperse stress and increase the contact area and connection stability between the ribs and the corrugated structure 6. The provision of the fireproof layer can improve the fireproof performance of the pipe body 1. At the same time, the anti-slip texture facilitates improving the gripping stability and installation convenience of the pipe body 1.

[0028] The working principle of this embodiment is as follows: first, the inner plug sleeve 2 is plugged into the left and right ends of the tube body 1 to enhance the end sealing and connection stability. Then, the extension part 3 is located at both ends of the tube body 1. According to the needs, the first metal laminate 5 and the second metal laminate are laser welded at the welding point 4. Then, under the cooperation of the first metal laminate 5 and the second metal laminate, when the whole is operated, it is convenient to withstand a large compression force without plastic deformation. The arrangement of the first metal laminate 5 and the second metal laminate can increase the connection stability of the tube body 1 under pressure. The contact area is increased, so that the overall compression rate is greater under the same external pressure condition. Then, multiple groups of convex corrugation groups 7 are equidistantly arranged at the bending points of the corrugated structure 6, which is conducive to dispersing the external pressure load and improving the compressive resistance of the tube body 1. The outer diameter of the convex corrugation group 7 is larger than the outer diameter of the corrugated structure 6, which increases the lateral stiffness and pressure-bearing area of ​​the tube body 1, further improving the compressive resistance. The corrugated structure 6 is set to have two groups of corrugations that are symmetrical, which helps to keep the force of the tube body 1 balanced and prevent distortion or deviation caused by asymmetric force, thereby causing damage to the tube body 1. , and with the arrangement and coordination of the arc cutting block 8 and the bevel cutting block 9, when the whole is compressed, the arc cutting block 8 can form a corresponding matching relationship with the concave part of the adjacent corrugation, which is convenient for dispersing local stress and preventing the corrugated structure from being locally damaged due to stress concentration, thereby enhancing the structural stability. At the same time, the arc profile of the arc cutting block 8 and the inclined surface design of the bevel cutting block 9 are also conducive to guiding and relieving the impact of external pressure, further improving the impact resistance of the pipe body 1, reducing the local stress level, improving the bending resistance of the pipe body 1, and effectively improving the overall service life. Then, the transverse folded thin steel The sheet reinforcement 10 and the fine steel sheet reinforcement 11 are inserted into but not penetrated through the side of the corrugated structure 6, so that the local strength and rigidity of the corrugated structure 6 can be enhanced with the cooperation of the transversely folded fine steel sheet reinforcement 10 and the fine steel sheet reinforcement 11. When subjected to large internal or external pressure, the mutual support of the transversely folded fine steel sheet reinforcement 10 and the fine steel sheet reinforcement 11 can effectively prevent the corrugated structure 6 and the multiple groups of convex corrugations 7 from excessive deformation or collapse. At the same time, the transversely folded shape design of the transversely folded fine steel sheet reinforcement 10 helps to disperse stress and increase the contact area and connection stability between the reinforcement sheet and the corrugated structure 6.

[0029] 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 long-life disc-type vacuum welded bellows, characterized in that: The invention comprises a tube body (1), wherein the tube body (1) adopts a double-wall structure, an inner lining layer is arranged inside the tube body (1), a corrugated structure (6) is arranged outside the tube body (1), the left and right ends of the tube body (1) are both plugged with an inner plug sleeve (2), the inner plug sleeve (2) is plugged with an extension part (3), a welding point (4) is arranged inside the side end of the extension part (3), and a first metal laminate (5) and a second metal laminate are arranged at the side ends of the welding point (4), respectively, and the first metal laminate (5) and the second metal laminate are made of the same material and have the same structure; Convex corrugation groups (7) are equidistantly arranged at the side ends of the corrugated structure (6), and there are multiple groups of the convex corrugation groups (7). The multiple groups of the convex corrugation groups (7) are equidistantly arranged at the bending points of the corrugated structure (6), and the outer diameters of the multiple groups of the convex corrugation groups (7) are greater than the outer diameter of the corrugated structure (6).

2. The long-life disc-type vacuum welded bellows according to claim 1 is characterized in that: The corrugated structure (6) is arranged with two groups of corrugations being symmetrical, an arc cutting block (8) is arranged at the left outer side pattern end of the corrugated structure (6), and a bevel cutting block (9) is arranged at the right outer side pattern end of the corrugated structure (6).

3. The long-life disc-type vacuum welded bellows according to claim 1 is characterized in that: The inner sides of the corrugated structure (6) are respectively provided with transversely folded thin steel sheet ribs (10) and thin steel sheet ribs (11) opposite to each other, and the transversely folded thin steel sheet ribs (10) and thin steel sheet ribs (11) are inserted into but not penetrated through the sides of the corrugated structure (6).

4. The long-life disc-type vacuum welded bellows according to claim 1 is characterized in that: The structures of the plurality of groups of convex corrugation groups (7) and the corrugated structure (6) are the same.

5. The long-life disc-type vacuum welded bellows according to claim 1 is characterized in that: The outer wall surfaces of the contact gaps between the tube body (1) and the plurality of groups of convex corrugation groups (7) and the corrugated structure (6) are coated with a fireproof layer.

6. The long-life disc-type vacuum welded bellows according to claim 1, characterized in that: The outer surfaces of the plurality of groups of convex corrugation groups (7) and the corrugated structure (6) are all provided with anti-slip patterns.

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