Novel pipeline connecting device
By using flexible corrugated pipes and O-rings in the air pipeline connection device, the problem of difficulty in compensating angular deviation and axial displacement in the prior art is solved, and a more efficient and economical air pipeline connection assembly is achieved. .
Patent Information
- Application Number
- CN202421092890.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing air pipeline connection devices are difficult to effectively compensate for angular deviation and axial displacement, and are poor in compensatory performance under high-temperature oil and gas working conditions, resulting in high assembly difficulty, low efficiency and high cost.
The pipeline connection parts including flexible corrugated pipes and O-rings are adopted. The flexible corrugated pipe compensates for angular deviation and axial displacement through its flexibility. The O-ring relieves the expansion of the flexible corrugated pipe and facilitates disassembly and assembly.
A maximum compensation of angular deviation and axial displacement is achieved, simplifying the assembly process, reducing assembly stress, improving assembly efficiency, and reducing costs.
Smart Images
Figure CN222458732U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a novel pipeline connecting device, belonging to the technical field of gas turbine pipeline systems. Background Art
[0002] The gas turbine piping system mainly includes fuel piping, lubricating oil piping and air piping. As one of its important components, the air piping is mainly used to cool the major components of the gas turbine, seal the air and discharge oil and gas, etc., to achieve the normal operation of the various components of the gas turbine.
[0003] The connection of air system pipelines can be mainly divided into connection with the casing, connection between pipelines, and connection with auxiliary system skid pipelines. In the gas turbine assembly process, since the air pipeline is assembled after the major components are assembled, the cumulative errors of the major components will make the pipeline assembly difficult. Compared with other fuel pipeline systems, the diameter of the air pipeline is usually larger, and manual calibration is difficult and inefficient, and will cause greater assembly stress. For air pipes that exceed the calibration diameter, they can only be reprocessed, resulting in delays in construction and increased costs.
[0004] In existing designs, in order to realize the compensation and adjustment function of the air pipeline, a universal head or a pipeline connection device is usually designed on the pipeline. The universal head can only compensate for the angle deviation, but not the axial displacement, and is difficult to disassemble. The existing traditional pipeline connection devices are usually metal parts with limited axial compensation. Under high-temperature oil and gas working conditions, the compensation is poor and cannot meet the working requirements of the gas turbine. Utility Model Content
[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a novel pipeline connection device which can compensate for angular deviation and axial displacement to a greater extent, has a wide application range, and is easy to assemble and disassemble.
[0006] The utility model discloses a novel pipeline connection device, comprising a pipeline connection piece and a clamp, wherein the air pipes on both sides are plug-connected and assembled with the two ends of the pipeline connection piece, and the clamp is clamped with the outer periphery of the pipeline connection piece inserted into the air pipe; the pipeline connection piece comprises a flexible bellows and an O-ring, wherein the air pipe is plug-connected and assembled with the flexible bellows, and the O-ring is clamped with the outer periphery of the middle part of the flexible bellows.
[0007] The flexible bellows has good flexibility. When the air pipes on both sides have angular deviations during the installation process, the two staggered air pipes can be connected together through the flexibility of the flexible bellows. Due to errors in other structural dimensions, the distance between the two air pipes may not be consistent with the expected distance. The flexibility of the flexible bellows can also adapt to two air pipes with different spacings. Thus, the angular deviation and axial displacement can be compensated to a large extent. In order to achieve the compensation capability of angle and displacement, the number and size of the corrugations of the flexible bellows can be adjusted as required. The O-ring is a metal ring. Since high-pressure air flows through the flexible bellows, the flexible bellows expands. By setting the O-ring, the expansion of the flexible bellows can be alleviated.
[0008] The flexible corrugated pipe comprises an inner layer, an outer layer and a middle layer, the inner layer and the outer layer are rubber layers, the middle layer is a reinforced fiber layer, and the outer layer has fireproof performance.
[0009] The inner tube walls at both ends of the flexible corrugated tube are provided with smooth rounded corners, so that the air tube can be easily inserted into the flexible corrugated tube.
[0010] Anti-dropout protrusions are arranged at both ends of the flexible corrugated tube along the circumferential direction, and the protrusions can prevent the clamp from falling off.
[0011] The flexible corrugated pipe is a composite corrugated hose, which has many characteristics such as good flexibility, fatigue resistance, high pressure bearing, good temperature resistance, corrosion resistance, strong sealing, etc., and has a much longer life than rubber hose or plastic hose.
[0012] A sealing protrusion is arranged on the circumferential outer wall of the connecting end of the air pipe and the flexible bellows. When the air pipe is inserted into the flexible bellows, the protrusion props up the wall of the flexible bellows, so that the air pipe wall and the flexible bellows wall are sealed and connected, avoiding a gap between the air pipe wall and the flexible bellows wall, thus playing a sealing role.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] (1) The utility model provides a flexible bellows and utilizes the good softness of the flexible bellows to compensate for angular deviation and axial displacement to a large extent, and can compensate for the maximum deformation requirement of the pipeline under load. By providing a clamp, the flexible bellows can be easily disassembled and assembled, and by providing an O-ring, the expansion of the flexible bellows can be alleviated.
[0015] (2) The inner tube walls at both ends of the flexible bellows are set with smooth rounded corners, which makes it easier for the air pipe to be inserted into the flexible bellows.
[0016] (3) A sealing protrusion is provided on the circumferential outer wall of the connection end of the air pipe and the flexible bellows. When the air pipe is inserted into the flexible bellows, the protrusion props up the wall of the flexible bellows, so that the air pipe wall and the flexible bellows wall are sealed and connected, avoiding a gap between the air pipe wall and the flexible bellows wall, thereby playing a sealing role. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional structural schematic diagram of embodiment 1 of the utility model;
[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of a flexible bellows;
[0019] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the air pipe.
[0020] In the figure: 1, air pipe; 2, pipe connector; 21, anti-drop protrusion; 22, flexible bellows; 221, outer layer; 222, middle interlayer; 223, inner layer; 23, O-ring; 3, clamp; 4, sealing protrusion. DETAILED DESCRIPTION
[0021] The utility model is further described below in conjunction with embodiments:
[0022] Example 1
[0023] like Figure 1 to Figure 3 As shown, a new type of pipeline connecting device described in the utility model includes a pipeline connector 2 and a clamp 3. The air pipes 1 on both sides are plugged and assembled with the two ends of the pipeline connector 2, and the clamp 3 is clamped with the outer periphery of the pipeline connector 2 inserted into the air pipe 1; the pipeline connector 2 includes a flexible bellows 22 and an O-ring 23. The air pipe 1 is plugged and assembled with the flexible bellows 22, and the O-ring 23 is clamped on the outer periphery of the middle part of the flexible bellows 22.
[0024] The flexible corrugated tube 22 includes an inner layer 223, an outer layer 221 and an intermediate layer 222. Figure 2 As shown, the inner layer 223 and the outer layer 221 are rubber layers, the middle interlayer 222 is a reinforced fiber layer, and the outer layer 221 has fireproof performance.
[0025] The inner tube walls at both ends of the flexible bellows 22 are provided with smooth rounded corners, so that the air tube 1 can be inserted into the flexible bellows 22 easily.
[0026] Anti-dropout protrusions 21 are provided along the circumferential direction at both ends of the flexible bellows 22. The protrusions can prevent the clamp 3 from falling off.
[0027] The flexible bellows 22 is a composite corrugated hose, which has many characteristics such as good flexibility, fatigue resistance, high pressure bearing, good temperature resistance, corrosion resistance, strong sealing, etc., and has a much longer life than rubber hoses or plastic hoses.
[0028] A sealing protrusion 4 is provided on the circumferential outer wall of the connection end between the air pipe 1 and the flexible bellows 22. Figure 3 When the air pipe 1 is inserted into the flexible bellows 22, the projections prop up the wall of the flexible bellows 22, so that the wall of the air pipe 1 is sealed with the wall of the flexible bellows 22, avoiding a gap between the wall of the air pipe 1 and the wall of the flexible bellows 22, and playing a sealing role.
[0029] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.
Claims
1. A new type of pipeline connection device, characterized in that: The invention comprises a pipeline connector (2) and a clamp (3), wherein the air pipes (1) on both sides are plugged and assembled with the two ends of the pipeline connector (2), and the clamp (3) is clamped with the outer periphery of the pipeline connector (2) inserted into the air pipe (1); the pipeline connector (2) comprises a flexible bellows (22) and an O-ring (23), the air pipe (1) is plugged and assembled with the flexible bellows (22), and the O-ring (23) is clamped on the outer periphery of the middle part of the flexible bellows (22).
2. The novel pipe connection device according to claim 1 is characterized in that: The flexible corrugated pipe (22) comprises an inner layer (223), an outer layer (221) and an intermediate layer (222); the inner layer (223) and the outer layer (221) are rubber layers, the intermediate layer (222) is a reinforced fiber layer, and the outer layer (221) has fireproof performance.
3. The novel pipe connection device according to claim 2 is characterized in that: The inner tube walls at both ends of the flexible corrugated tube (22) are arranged with smooth rounded corners.
4. The novel pipe connection device according to claim 2 is characterized in that: Anti-drop protrusions (21) are arranged at both ends of the flexible corrugated tube (22) along the circumferential direction.
5. The novel pipe connection device according to claim 4 is characterized in that: The flexible corrugated pipe (22) is a composite corrugated hose.
6. The novel pipeline connection device according to any one of claims 1 to 5, characterized in that: A sealing protrusion (4) is provided on the circumferential outer wall of the connection end between the air pipe (1) and the flexible bellows (22).