Pipeline hard connection structure capable of being adjusted in multiple directions
By combining rigid straight pipes, rigid bends, and adjusting flange assemblies, the leakage and assembly problems caused by the lack of compensation in engine component connections are solved, achieving high-strength and sealed rigid pipe connections.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-03-31
AI Technical Summary
The lack of compensation in the existing engine component connection methods leads to problems such as pipeline leakage and difficulty in assembly.
The system employs a multi-directional adjustable rigid pipe connection structure, including rigid straight pipes, rigid bends, and adjusting flange assemblies. Multi-directional adjustment is achieved through the design of moving and limiting parts, and sealing performance and strength are ensured by using a combination of sealing rings and bolts.
It achieves high strength and sealing performance of rigid pipe connections, solves pipe leakage and assembly problems, and improves assembly efficiency.
Smart Images

Figure CN224065025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to engine piping, and more specifically, to a multi-directional adjustable piping rigid connection structure. Background Technology
[0002] As the number of components in high-horsepower engines increases, the piping connections between these components become more complex. Accumulated deviations during assembly also increase, and the high pressure of the medium flowing within the pipes frequently leads to bursts and leaks in the original connecting hoses. While considering using more reliable rigid pipe connections, the lack of compensation in rigid connections can result in pipe leaks and assembly difficulties. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a multi-directional adjustable rigid connection structure for pipelines, which addresses the shortcomings of existing technologies and solves the technical problems of pipeline leakage and difficult assembly caused by the lack of compensation in the connection method of existing engine parts.
[0004] The present invention discloses a multi-directional adjustable pipeline rigid connection structure, which includes a rigid straight pipe, a rigid bend pipe, and an adjusting flange assembly. The rigid straight pipe is inserted into the adjusting flange assembly, and a movable part is provided on one end of the rigid straight pipe inserted into the adjusting flange assembly. A second sealing ring is installed between the movable part and the adjusting flange assembly, and a limiting part is installed between the rigid bend pipe and the adjusting flange assembly.
[0005] As a further improvement, the adjusting flange assembly includes a first flange, a flange mounting part, and a plurality of bolts. The rigid straight pipe is inserted into the first flange, and the rigid bent pipe is fixedly installed in the flange mounting part. The first flange is mated with the flange mounting part. The first flange is provided with a plurality of first through holes, and the flange mounting part is provided with a plurality of first threaded holes. The bolts are inserted through the first through holes and screwed into the first threaded holes.
[0006] Furthermore, the diameter of the movable part is smaller than the diameter of the rigid tube, and the diameter of the movable part matches the inner diameter of the flange hole of the first flange, while the diameter of the limiting part is larger than the diameter of the rigid tube.
[0007] Furthermore, a second sealing ring is installed between the rigid pipe and the first flange.
[0008] Furthermore, a first sealing ring is installed between the first flange and the flange mounting part.
[0009] Furthermore, an interference ring is provided between the bolt cap of the bolt and the first flange.
[0010] Beneficial effects
[0011] The advantages of this utility model are:
[0012] This utility model includes a rigid straight pipe, a rigid bend pipe, and an adjusting flange assembly. The rigid straight pipe is inserted into the adjusting flange assembly, and a movable part is provided on one end of the rigid straight pipe inserted into the adjusting flange assembly. A second sealing ring is installed between the movable part and the adjusting flange assembly. A limiting part is installed between the rigid bend pipe and the adjusting flange assembly. The setting of the limiting part and the movable part enables multi-directional adjustment of the flange during installation, resulting in a rigid pipe connection with higher strength than the rubber hose plus rigid pipe connection method. At the same time, the adjusting flange assembly can ensure the pipeline is sealed. Attached Figure Description
[0013] Figure 1 This is a three-dimensional view of the rigid connection structure of this utility model;
[0014] Figure 2 This is a cross-sectional view of the rigid connection structure of this utility model.
[0015] Wherein: 1-Straight pipe, 2-Adjusting flange assembly, 3-Flange mounting part, 4-First sealing ring, 5-Second sealing ring, 6-Bolt, 7-Hard bend, 8-First flange, 9-Moving part, 10-Limiting part, 11-Gap, 12-Bolt cap, 13-Interference ring. Detailed Implementation
[0016] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.
[0017] See Figures 1-2 This utility model discloses a multi-directional adjustable rigid pipe connection structure, comprising a rigid straight pipe 1, a rigid bend 7, and an adjusting flange assembly 2. The rigid straight pipe 1 is inserted into the adjusting flange assembly 2, and a movable part 9 is provided on one end of the rigid straight pipe 1 inserted into the adjusting flange assembly 2. A second sealing ring 5 is installed between the movable part 9 and the adjusting flange assembly 2. A limiting part 10 is installed between the rigid bend 7 and the adjusting flange assembly 2. The straight pipe connection 1 and the adjusting flange assembly 2 are connected by an insertion method, which allows for vertical adjustment of the straight pipe connection 1.
[0018] The adjusting flange assembly 2 includes a first flange 8, a flange mounting part 3, and multiple bolts 6. A rigid straight pipe 1 is inserted into the first flange 8, and a rigid bent pipe 7 is fixedly installed in the flange mounting part 3. The first flange 8 is mated with the flange mounting part 3. The first flange 8 is provided with multiple first through holes, and the flange mounting part 3 is provided with multiple first threaded holes. The bolts 6 are inserted through the first through holes and screwed into the first threaded holes.
[0019] The diameter of the movable part 9 is smaller than the diameter of the rigid tube 1, and the diameter of the movable part 9 matches the inner diameter of the flange hole of the first flange 8. The diameter of the limiting part 10 is larger than the diameter of the rigid tube 1. The movable part 9 realizes the vertical adjustment of the rigid tube 1, and the limiting part 10 limits the vertical displacement of the rigid tube 1.
[0020] A second sealing ring 5 is installed between the rigid pipe 1 and the first flange 8, and a first sealing ring 4 is installed between the first flange 8 and the flange mounting part 3. The elastic deformation of the first sealing ring 4 and the second sealing ring 5 can absorb and adjust the small displacements (such as axial compression or radial extrusion) between the flange assembly 2 and the rigid bend 7 or between the first flange 8 and the second flange 3, thereby achieving auxiliary sealing while reducing rigid constraints.
[0021] An interference ring 13 is provided between the bolt cap 12 of bolt 6 and the first flange 8. The interference ring 13 is used to tighten the first flange 8 and the flange mounting part 3 to achieve horizontal adjustment of the adjusting flange assembly 2.
[0022] This invention is a multi-directional adjustable pipeline rigid connection structure. First, one end of the rigid bend 7 is fixedly installed on the engine. Then, the first sealing ring 4 is installed on the flange mounting part 3. Next, the second sealing ring 5 and the adjusting flange assembly 2 are pre-installed on one end of the rigid straight pipe 1. Then, the other end of the rigid straight pipe 1 is installed on the engine. Finally, the first flange 8 and the flange mounting part 3 are tightened with bolts 6.
[0023] This structure uses a pipe insertion method, and multi-directional adjustment is achieved by adjusting the flange assembly 2, thereby creating deviations and cumulative assembly deviations, resulting in a rigid pipe connection with higher strength than the rubber hose plus rigid pipe connection method. At the same time, adjusting the flange assembly 2 can ensure the sealed connection between the rigid straight pipe 1 and the rigid bend pipe 7.
[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.
Claims
1. A multi-directionally adjustable pipe hard connection structure, characterized in that, It includes a hard straight pipe (1), a hard elbow pipe (7) and an adjusting flange assembly (2), the hard straight pipe (1) is inserted in the adjusting flange assembly (2), the hard straight pipe (1) is provided with a movable part (9) on one end of the adjusting flange assembly (2), a second sealing ring (5) is installed between the movable part (9) and the adjusting flange assembly (2), and a limiting part (10) is installed between the hard elbow pipe (7) and the adjusting flange assembly (2).
2. A multi-directionally adjustable pipe hard connection structure according to claim 1, wherein, The adjusting flange assembly (2) comprises a first flange (8), a flange mounting part (3) and a plurality of bolts (6), the hard straight pipe (1) is inserted in the first flange (8), the hard elbow pipe (7) is fixedly installed in the flange mounting part (3), the first flange (8) is connected with the flange mounting part (3), a plurality of first through holes are arranged on the first flange (8), a plurality of first threaded holes are arranged on the flange mounting part (3), the bolts (6) are inserted into the first through holes and screwed in the first threaded holes.
3. A multi-adjustable pipe hard connection structure according to claim 2, wherein, The diameter of the movable part (9) is smaller than the diameter of the hard straight pipe (1), and the diameter of the movable part (9) matches the inner diameter of the flange hole of the first flange (8), and the diameter of the limiting part (10) is greater than the diameter of the hard straight pipe (1).
4. A multi-adjustable pipe hard connection structure according to claim 2, wherein, The second sealing ring (5) is installed between the hard straight pipe (1) and the first flange (8).
5. A multi-adjustable pipe hard connection structure according to claim 2, wherein, The first sealing ring (4) is installed between the first flange (8) and the flange mounting part (3).
6. A multi-adjustable pipe hard connection structure according to claim 2, wherein, The bolt cap (12) of the bolt (6) is provided with an interference ring (13) between the first flange (8). The diameter of the movable part (9) is smaller than the diameter of the hard straight pipe (1), and the diameter of the movable part (9) matches the inner diameter of the flange hole of the first flange (8), and the diameter of the limiting part (10) is greater than the diameter of the hard straight pipe (1).