Stainless steel high-pressure pipeline assembly

Abstract

The utility model belongs to the technical field of high-pressure pipelines, and particularly relates to a stainless steel high-pressure pipeline assembly which comprises a first pipe body, a second pipe body and a connecting sleeve, a left flange and a right flange are welded to the left end and the right end of the first pipe body and the left end and the right end of the second pipe body respectively, and fixing holes are annularly and evenly formed in the outer walls of the left flange and the right flange. A connecting sleeve is clamped between the left flange of the first pipe body and the right flange of the second pipe body, outer rings of the left side and the right side of the connecting sleeve are provided with outer wrapping rings, and the outer diameter of the left flange of the first pipe body and the outer diameter of the right flange of the second pipe body are wrapped by the left outer wrapping ring and the right outer wrapping ring respectively. The connecting sleeve wraps the flanges of the pipelines on the two sides, the threaded rod and the nut are used for penetrating and screwing, the connecting ring and the countersunk head groove are clamped to tightly connect inner holes of the flanges, the surfaces of the connecting flanges in the transportation process of the high-pressure pipelines are protected, and the situation that the surfaces of the connecting flanges are damaged in the transportation process, and the structural strength of the pipelines in the later period is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure pipelines, in particular to a stainless steel high-pressure pipeline assembly. Background Art

[0002] High-pressure pipelines are used in high-pressure chemical production processes, the more important ones include synthetic ammonia production, urea production, methanol production and petroleum hydrocracking.

[0003] An existing patent (publication number CN116293126A) and a connection structure for a high-pressure pipeline can realize the connection between a first high-pressure pipeline and a second high-pressure pipeline, and can also realize uniform compression of the sealing ring when the fitting surfaces of the two flanges are not parallel, thereby ensuring the sealing performance between the first high-pressure pipeline and the second high-pressure pipeline. Since the high-pressure pipeline needs to be transported to the installation location and then installed, the surface of the connecting flange of the high-pressure pipeline is easily damaged during transportation. After scratches or bumps appear on the flange surface, after the two sets of flanges are sealed and engaged, leakage problems are likely to occur in a high-pressure environment.

[0004] Therefore, we propose a stainless steel high-pressure pipeline assembly, which is beneficial to protecting the surface of the connecting flange of the high-pressure pipeline during transportation, and avoiding damage to the surface of the connecting flange during transportation, which affects the structural strength of the pipeline in the later stage. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a stainless steel high-pressure pipeline assembly to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel high-pressure pipeline assembly, comprising a first tube body, a second tube body and a connecting sleeve, wherein the left and right ends of the first tube body and the second tube body are respectively welded with a left flange and a right flange, and the outer walls of the left and right flanges are evenly and annularly provided with fixing holes, and a connecting sleeve is clamped between the left flange of the first tube body and the right flange of the second tube body, and outer rings are provided with outer rings on the left and right outer rings of the connecting sleeve, and the left and right groups of the outer rings respectively wrap the outer diameters of the left flange of the first tube body and the right flange of the second tube body, and a screw is passed through the left flange of the first tube body, the right flange of the second tube body and the connecting sleeve, and a nut is screwed on the end of the screw.

[0007] Further: countersunk grooves are arranged at the joints of the left and right ends of the first tube body, and connecting rings are arranged at the left and right ends of the connecting sleeve respectively, and the connecting rings are engaged with the corresponding countersunk grooves.

[0008] Furthermore: an inner sleeve is nested between the connecting ring and the countersunk groove, and the inner sleeve is elastic.

[0009] Further: the left and right groups of the outer rings and the left flange of the first tube body and the right flange of the second tube body are embedded with outer sleeves, and the outer sleeves are elastic.

[0010] Furthermore: the outer wall of the connecting sleeve is evenly and annularly provided with through holes, the number of the through holes is the same as the number of the fixing holes, and the positions of the through holes correspond to the positions of the fixing holes one by one.

[0011] Further: a screw rod penetrates through the fixing hole on the left flange of the first tube body, the through hole of the connecting sleeve and the fixing hole on the right flange of the second tube body, and the tail end of the screw rod is screwed with a corresponding nut.

[0012] Furthermore: the left flange of the second tube body is engaged with a closed ring, and the structure of the closed ring is the same as that of the connecting sleeve.

[0013] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0014] 1) The stainless steel high-pressure pipeline assembly of the utility model is provided with a first pipe body, a connecting sleeve and a second pipe body. The connecting sleeve is clamped by the first pipe body and the second pipe body, so that the outer ring on the left side of the connecting sleeve is wrapped corresponding to the right flange of the second pipe body, and then the outer ring on the right side of the connecting sleeve is wrapped corresponding to the left flange of the first pipe body. When the screw and the nut are penetrated and screwed together, the connecting ring and the countersunk groove are engaged, so that during the transportation of the high-pressure pipeline, the flange surface does not contact the external environment, thereby greatly reducing the possibility of wear, which is beneficial to protecting the surface of the connecting flange of the high-pressure pipeline during transportation, and avoiding damage to the surface of the connecting flange during transportation that affects the structural strength of the pipeline in the later stage.

[0015] 2) The stainless steel high-pressure pipeline assembly of the utility model is provided with a closed ring, an inner sleeve and an outer sleeve. The connecting rings on the left and right sides of the connecting sleeve are nested between the countersunk grooves corresponding to the first tube body and the second tube body, so that the inner sleeve is located between the connecting ring and the countersunk groove, and an outer sleeve is arranged between the outer ring and the outer diameter of the flange. In the event of vibration during transportation, the inner sleeve and the outer sleeve can reduce the possibility of wear caused by vibration, and at the same time, the ends of multiple connecting tube bodies are clamped and fixed by the closed ring to further avoid wear of the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the first tube structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connecting sleeve structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the combined structure of the first tube body and the second tube body of the utility model.

[0019] The figures are marked as follows: 1. first tube body; 2. left flange; 3. right flange; 4. fixing hole; 5. countersunk groove; 6. connecting sleeve; 7. through hole; 8. connecting ring; 9. inner sleeve; 10. outer sleeve; 11. outer ring; 12. second tube body; 13. closing ring. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative, and the structures involved in the present invention are not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0021] Example:

[0022] See also Figure 1-3 The utility model provides a technical solution: a stainless steel high-pressure pipeline assembly, including a first pipe body 1, a second pipe body 12 and a connecting sleeve 6, wherein the left flange 2 and the right flange 3 are welded to the left and right ends of the first pipe body 1 and the second pipe body 12 respectively, and the outer walls of the left flange 2 and the right flange 3 are evenly annularly opened with fixing holes 4, and a connecting sleeve 6 is clamped between the left flange 2 of the first pipe body 1 and the right flange 3 of the second pipe body 12, and the outer rings on the left and right sides of the connecting sleeve 6 are provided with outer wrapping rings 11, and the left and right groups of the outer wrapping rings 11 respectively wrap the outer diameters of the left flange 2 of the first pipe body 1 and the right flange 3 of the second pipe body 12, and the left flange 2 of the first pipe body 1 and the second pipe body 12 are respectively welded to the left flange 2 of the first pipe body 1 and the right flange 3 of the second pipe body 12. The right flange 3 of the body 12 and the connecting sleeve 6 are penetrated by a screw, and a nut is screwed on the end of the screw. The connecting sleeve 6 is clamped by the first tube body 1 and the second tube body 12, so that the outer ring 11 on the left side of the connecting sleeve 6 corresponds to the right flange 3 of the second tube body 12 and the outer ring 11 on the right side of the connecting sleeve 6 corresponds to the left flange 2 of the first tube body 1. The screw and the nut are penetrated and screwed together, so that during the transportation of the high-pressure pipeline, the flange surface does not contact the external environment, thereby greatly reducing the possibility of wear, protecting the surface of the connecting flange of the high-pressure pipeline during transportation, and avoiding damage to the surface of the connecting flange during transportation that affects the structural strength of the pipeline in the later stage.

[0023] Among them, countersunk grooves 5 are provided at the joints of the left and right ends of the first tube body 1, and connecting rings 8 are respectively provided at the left and right ends of the connecting sleeve 6. The connecting rings 8 are engaged with the countersunk grooves 5, so that the connecting sleeve 6 is fixed by the connecting rings 8 and the countersunk grooves 5 of the flange.

[0024] An inner sleeve 9 is nested between the connecting ring 8 and the countersunk groove 5 . The inner sleeve 9 is elastic and made of rubber.

[0025] Among them, the left and right groups of the outer rings 11 and the left flange 2 of the first tube body 1 and the right flange 3 of the second tube body 12 are nested with an outer bushing 10, and the outer bushing 10 is elastic. The connecting rings 8 on the left and right sides of the connecting sleeve 6 are nested between the countersunk grooves 5 of the first tube body 1 and the second tube body 12, and then the inner bushing 9 is located between the connecting ring 8 and the countersunk groove 5, and the outer bushing 10 is arranged between the outer ring 11 and the outer diameter of the flange. In the event of vibration during transportation, the inner bushing 9 and the outer bushing 10 can reduce the possibility of wear caused by vibration.

[0026] The outer wall of the connecting sleeve 6 is evenly and annularly provided with through holes 7, the number of the through holes 7 is the same as the number of the fixing holes 4, the positions of the through holes 7 correspond to the positions of the fixing holes 4, and the apertures of the through holes 7 and the fixing holes 4 are the same.

[0027] Among them, screws are inserted through the fixing hole 4 on the left flange 2 of the first tube body 1, the through hole 7 of the connecting sleeve 6 and the fixing hole 4 on the right flange 3 of the second tube body 12, and the tail end of the screw is screwed with the corresponding nut, so that the left flange 2 of the first tube body 1, the connecting sleeve 6 and the right flange 3 of the second tube body 12 are penetrated and fixed by the screws.

[0028] The left flange 2 of the second tube body 12 is engaged with a closed ring 13 , and the structure of the closed ring 13 is the same as that of the connecting sleeve 6 .

[0029] The working principle in the embodiment of the utility model is as follows: the connecting sleeve 6 is clamped by the first tube body 1 and the second tube body 12, so that the outer ring 11 on the left side of the connecting sleeve 6 is wrapped corresponding to the right flange 3 of the second tube body 12, and then the outer ring 11 on the right side of the connecting sleeve 6 is wrapped corresponding to the left flange 2 of the first tube body 1, and the screw and nut are penetrated and screwed together, so that the flange surface of the high-pressure pipeline does not contact the external environment during transportation, thereby greatly reducing the possibility of wear, and at the same time, the connecting rings 8 on the left and right sides of the connecting sleeve 6 are nested between the countersunk grooves 5 of the first tube body 1 and the second tube body 12, and then the inner sleeve 9 is located between the connecting ring 8 and the countersunk groove 5, and the outer sleeve 10 is arranged between the outer ring 11 and the outer diameter of the flange. In the event of vibration during transportation, the inner sleeve 9 and the outer sleeve 10 are used to reduce the possibility of wear caused by vibration, and at the same time, the ends of multiple connecting tube bodies are clamped and fixed by the closed ring 13.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stainless steel high-pressure pipeline assembly, comprising a first pipe body (1), a second pipe body (12) and a connecting sleeve (6), wherein the first pipe body (1) and the second pipe body (12) are respectively welded with a left flange (2) and a right flange (3) at the left and right ends thereof, and the outer walls of the left flange (2) and the right flange (3) are evenly provided with fixing holes (4) in an annular shape, characterized in that: A connecting sleeve (6) is sandwiched between the left flange (2) of the first tube body (1) and the right flange (3) of the second tube body (12); outer rings (11) are arranged on the left and right outer rings of the connecting sleeve (6); the left and right groups of the outer rings (11) respectively wrap the outer diameters of the left flange (2) of the first tube body (1) and the right flange (3) of the second tube body (12); a screw rod is passed through the left flange (2) of the first tube body (1), the right flange (3) of the second tube body (12) and the connecting sleeve (6); a nut is screwed onto the end of the screw rod.

2. A stainless steel high-pressure pipeline assembly according to claim 1, characterized in that: Countersunk grooves (5) are provided at the joints of the left and right ends of the first tube body (1), and connecting rings (8) are provided at the left and right ends of the connecting sleeve (6), respectively, and the connecting rings (8) are engaged with the corresponding countersunk grooves (5).

3. A stainless steel high-pressure pipeline assembly according to claim 2, characterized in that: An inner sleeve (9) is nested between the connecting ring (8) and the countersunk groove (5), and the inner sleeve (9) is elastic.

4. A stainless steel high-pressure pipeline assembly according to claim 1, characterized in that: The left and right sets of the outer rings (11) and the left flange (2) of the first tube body (1) and the right flange (3) of the second tube body (12) are nested with an outer bushing (10), and the outer bushing (10) is elastic.

5. The stainless steel high-pressure pipeline assembly according to claim 1, characterized in that: The outer wall of the connecting sleeve (6) is evenly and annularly provided with through holes (7), the number of the through holes (7) is the same as the number of the fixing holes (4), and the positions of the through holes (7) correspond one to one with the positions of the fixing holes (4).

6. A stainless steel high-pressure pipeline assembly according to claim 1, characterized in that: A screw rod is passed through the fixing hole (4) on the left flange (2) of the first tube body (1), the through hole (7) of the connecting sleeve (6) and the fixing hole (4) on the right flange (3) of the second tube body (12), and the tail end of the screw rod is screwed into a corresponding nut.

7. A stainless steel high-pressure pipeline assembly according to claim 1, characterized in that: The left flange (2) of the second tube body (12) is engaged with a closed ring (13), and the structure of the closed ring (13) is the same as that of the connecting sleeve (6).

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