A lubricating oil pipeline for hard coupling of multiple sets of units

Abstract

The utility model discloses a kind of multi-set unit hard coupling lubricating oil pipeline, each oil pipe includes three sections of pipeline, respectively X direction pipeline, Y direction pipeline and Z direction pipeline, X direction pipeline, Y direction pipeline and Z direction pipeline are equipped with at least one connecting structure, to connect segmented pipeline;Connecting structure includes flange and adjusting assembly, flange is set to the connecting end of two adjacent pipelines, adjusting assembly is clamped between the flange of two adjacent pipelines with fastening bolt piece, adjust adjusting assembly can compensate the gap between two adjacent pipelines.The utility model optimizes pipeline connecting structure, assemble for the field of pipeline, can save the process of field welding and nondestructive testing, and hose coupling is not used in field, so reduce the risk of hose damage and oil leakage;By setting adjusting assembly in the pipeline of three directions, not only can sealing connection segmented pipeline, but also can realize the assembly of different gap pipeline by adjusting outer sleeve and inlay pipe.

Description

Technical Field

[0001] This utility model belongs to the field of steam turbine technology, specifically relating to a lubricating oil pipeline for hard-connected multiple units. Background Technology

[0002] A steam turbine unit with two generators requires lubricating oil for the turbine, air compressor, and booster compressor. Rigid connections for the lubricating oil pipelines allow for in-workshop manufacturing and non-destructive testing. However, on-site piping and welding, or connections using flexible hoses, have the following drawbacks: 1) Sufficient pipe length must be reserved, leading to material waste; 2) On-site installation requires skilled welders, necessitating a less convenient working environment compared to a factory, thus lengthening the construction period; 3) Post-welding non-destructive testing and corrosion protection are required; 4) Due to welding, the pipelines require cleaning, increasing the time needed for oil circulation and cleaning.

[0003] The following defects exist in hose connections: 1) When the hose is connected to the equipment, there is constant vibration during equipment operation. The hose's support rigidity is insufficient, so after a period of operation, the hose will break and leak oil, increasing the probability of unit shutdown; 2) The hose needs to be cleaned before leaving the factory to ensure that there are no impurities in the recesses. Utility Model Content

[0004] To overcome the shortcomings of existing technology, this utility model provides a lubricating oil pipeline with multiple sets of units rigidly connected. Each pipeline adopts a three-way adjustment structure to ensure a sealed connection between the pipelines.

[0005] The aforementioned lubricating oil pipeline for rigid connection of multiple units comprises three sections per pipeline: an X-direction pipeline, a Y-direction pipeline, and a Z-direction pipeline. Each of the X-direction, Y-direction, and Z-direction pipelines is equipped with at least one connecting structure for connecting the segmented pipelines. The connecting structure includes a flange and an adjusting assembly. The flange is located at the connection end of two adjacent pipelines, and the adjusting assembly, in conjunction with fastening bolts, is clamped between the flanges of the two adjacent pipelines. Adjusting the adjusting assembly can compensate for the gap between the two adjacent pipelines, achieving a sealed rigid connection of the pipelines.

[0006] Furthermore, the adjustment assembly includes an outer tube and an inner tube, wherein the inner wall of the outer tube is provided with an inner sealing thread, which is adjustablely engaged with the outer sealing thread provided on the outer wall of the inner tube.

[0007] Furthermore, the outer sleeve and the inner sleeve are respectively fitted with two opposite flanges, and a sealing gasket is provided between the outer sleeve and the inner sleeve and the flange.

[0008] Furthermore, the embedded tube has a hollow structure and is provided with a lubricating oil channel communicating with the pipeline; the embedded tube includes an integrally formed inner tube seat and an inner tube, and the sealing gasket is disposed between the side wall of the inner tube seat and the flange; the outer wall of the inner tube is provided with an external sealing thread to assemble with the outer tube.

[0009] Furthermore, the outer sleeve has a hollow structure and is provided with a lubricating oil channel communicating with the pipeline; the outer sleeve includes an integrally formed outer sleeve seat and an outer sleeve, and a sealing gasket is provided on the side of the outer sleeve seat away from the outer sleeve for sealing and fitting with the flange; the inner wall of the outer sleeve is provided with an internal sealing thread.

[0010] Furthermore, the flanges on the two adjacent pipe connection sides are adjustablely assembled by a number of fastening bolts, which are arranged around the adjustment assembly to clamp the adjustment assembly between the two flanges.

[0011] Compared with the prior art, the present invention has the following advantages: This invention adds three-directional adjustment components to the small pipelines of steam turbines and air compressors. These components compensate for installation gaps and are installed using a flange clamping method. By optimizing the pipeline connection structure and assembling the pipelines on-site, it saves on-site welding and non-destructive testing processes. Furthermore, it eliminates the need for hose connections on-site, reducing the risk of hose damage and oil leakage. By setting adjustment components in the X, Y, and Z directions, it not only seals the connection of segmented pipelines but also allows for the assembly of pipelines with different gaps by adjusting the outer and inner pipes. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the lubricating oil pipeline of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the connection structure of this utility model; Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model; Figure 5 This is a cross-sectional view of the adjustment component of this utility model.

[0013] In the diagram: 1-X-direction piping, 2-Y-direction piping, 3-Z-direction piping, 4-connection structure, 41-flange, 42-adjustment assembly, 421-outer sleeve, 4211-outer pipe seat, 4212-outer pipe, 422-inner pipe, 4221-inner pipe seat, 4222-inner pipe, 43-fastening bolts, 44-sealing gasket. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0015] like Figure 1 and Figure 2 As shown, a lubricating oil pipeline with rigid connection of multiple units is disclosed. Each oil pipeline includes three sections: an X-direction pipeline 1, a Y-direction pipeline 2, and a Z-direction pipeline 3. Each of the X-direction pipeline 1, Y-direction pipeline 2, and Z-direction pipeline 3 is provided with at least one connecting structure 4 for connecting the segmented pipelines. The connecting structure 4 includes a flange 41 and an adjusting assembly 42. The flange 41 is located at the connection end of two adjacent pipelines. The adjusting assembly 42, in conjunction with fastening bolts 43, is clamped between the flanges 41 of the two adjacent pipelines. Adjusting the adjusting assembly 42 can compensate for the gap between the two adjacent pipelines, achieving a sealed rigid connection of the pipelines. The flanges 44 on the connection side of the two adjacent pipelines can be adjusted and assembled by a number of fastening bolts 43. The fastening bolts 43 are arranged around the adjusting assembly 42 to clamp the adjusting assembly 42 between the two flanges 44.

[0016] like Figures 3-5 As shown, the adjusting assembly 42 includes an outer tube 421 and an inner tube 422. The inner wall of the outer tube 421 is provided with an inner sealing thread, which can be adjusted to fit with the outer sealing thread provided on the outer wall of the inner tube 422. Specifically, the outer tube 421 and the inner tube 422 respectively mate with two opposite flanges 41, and a sealing gasket 44 is provided between the outer tube 421 and the inner tube 422 and the flange 41. The inner tube 422 has a hollow structure and is provided with a lubricating oil passage communicating with the pipeline; the inner tube 422 includes an integrally formed inner tube seat 4221 and an inner tube 4222, and the sealing gasket 44 is provided between the side wall of the inner tube seat 4221 and the flange 41; the outer wall of the inner tube 4222 is provided with an outer sealing thread to assemble with the outer tube 421. The outer sleeve 421 has a hollow structure and is provided with a lubricating oil passage that communicates with the pipeline. The outer sleeve 421 includes an integrally formed outer sleeve seat 4211 and an outer sleeve 4212. A sealing gasket 44 is provided on the side of the outer sleeve seat 4211 away from the outer sleeve 4212 for sealing and fitting with the flange 41. An inner sealing thread is provided on the inner wall of the outer sleeve 4212.

[0017] This application adapts to two adjacent flanges 41 by adjusting the distance between the outer pipe seat 4211 and the inner pipe seat 4221 through rotating the outer sleeve 421; then, the adjusting assembly 42 is clamped by tightening bolts 43. The connection structure 4, used in the X-direction pipeline 1, Y-direction pipeline 2, and Z-direction pipeline 3, allows for on-site installation of lubricating oil pipelines, saving on-site welding and non-destructive testing procedures.

[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lubricating oil pipeline for multiple sets of units rigidly connected, characterized in that, Each oil pipe includes three sections: an X-direction pipe (1), a Y-direction pipe (2), and a Z-direction pipe (3). Each of the X-direction pipe (1), Y-direction pipe (2), and Z-direction pipe (3) is provided with at least one connecting structure (4) to connect the sections of the pipe. The connecting structure (4) includes a flange (41) and an adjusting component (42). The flange (41) is located at the connection end of two adjacent pipes. The adjusting component (42) is clamped between the flanges (41) of the two adjacent pipes in conjunction with the fastening bolts (43). Adjusting the adjusting component (42) can compensate for the gap between the two adjacent pipes and achieve a sealed hard connection of the pipes.

2. The lubricating oil pipeline for a multi-unit rigid connection according to claim 1, characterized in that, The adjustment component (42) includes an outer tube (421) and an inner tube (422). The inner wall of the outer tube (421) is provided with an inner sealing thread, which can be adjusted to fit with the outer sealing thread provided on the outer wall of the inner tube (422).

3. The lubricating oil pipeline for a multi-unit rigid connection according to claim 2, characterized in that, The outer tube (421) and the inner tube (422) are respectively fitted to two opposite flanges (41), and a sealing gasket (44) is provided between the outer tube (421) and the inner tube (422) and the flange (41).

4. The lubricating oil pipeline for a multi-unit rigid connection according to claim 3, characterized in that, The inner tube (422) is a hollow structure and has a lubricating oil channel communicating with the pipeline; the inner tube (422) includes an integrally formed inner tube seat (4221) and inner tube (4222), and the sealing gasket (44) is disposed between the side wall of the inner tube seat (4221) and the flange (41); the outer wall of the inner tube (4222) is provided with an external sealing thread to be assembled with the outer tube (421).

5. The lubricating oil pipeline for a multi-unit rigid connection according to claim 3, characterized in that, The outer sleeve (421) is a hollow structure and has a lubricating oil channel communicating with the pipeline; the outer sleeve (421) includes an integrally formed outer tube seat (4211) and an outer tube (4212), and a sealing gasket (44) is provided on the side of the outer tube seat (4211) away from the outer tube (4212) for sealing and fitting with the flange (41); the inner wall of the outer tube (4212) is provided with an inner sealing thread.

6. A lubricating oil pipeline for a multi-unit rigid connection according to any one of claims 1-5, characterized in that, The flanges (41) on the two adjacent pipe connection sides are adjustablely assembled by a number of fastening bolts (43), which are arranged around the adjustment assembly (42) to clamp the adjustment assembly (42) between the two flanges (41).

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