Hydrogen-doped natural gas anti-layering pipe fitting

Abstract

The utility model relates to an anti-layering pipe fitting for hydrogen-doped natural gas. The anti-layering pipe fitting mainly comprises a cylinder body, a blade rotor and a rolling bearing, seat holes are symmetrically and fixedly formed in the inner wall of the middle of the barrel, and flanges are arranged at the two ends of the barrel; a rolling bearing is assembled in the seat hole, and the blade rotor is rotationally connected with the cylinder body through the rolling bearing. According to the hydrogen-doped natural gas pipeline, the layering phenomenon in the gravity direction of the pipeline due to the fact that hydrogen gradually deviates towards the top of the pipeline along with flowing when the hydrogen-doped natural gas pipeline stops conveying or runs at a very low flow speed can be effectively improved. The device has the advantages of being simple in structure, convenient to install, free of electric power, wide in application range and the like, can be installed on a hydrogen-doped natural gas conveying pipeline, and effectively reduces the risks of burning explosion, pipeline hydrogen-induced failure and the like when a user uses gas.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen-blended natural gas transportation equipment, in particular to a hydrogen-blended natural gas anti-stratification pipe fitting. Background Art

[0002] Natural gas, as a traditional energy source, plays a vital role in our daily lives and industrial production. However, with the growing need for environmental protection and energy transition, relying solely on natural gas is no longer sufficient to meet future energy development requirements. Hydrogen is a clean, zero-carbon energy source. Adding it to natural gas can reduce carbon emissions during combustion, contributing to greenhouse gas emissions and mitigating climate change. Hydrogen-blended natural gas improves overall energy efficiency. Furthermore, the addition of hydrogen improves the combustion characteristics of natural gas, making it more complete and stable.

[0003] When hydrogen-blended natural gas pipelines are shut down or operating at very low flow rates, hydrogen gradually shifts toward the top of the pipeline, causing stratification in the direction of gravity. This phenomenon can easily lead to explosions during user consumption and hydrogen-induced pipeline failure. Existing hydrogen-blended natural gas mixing equipment is mostly used in locations like natural gas gate stations and requires an external power supply, limiting its applicability. Therefore, we have developed a hydrogen-blended natural gas anti-stratification pipe fitting. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the utility model provides a hydrogen-blended natural gas anti-stratification pipe fitting with the advantages of simple structure, easy installation, no need for electricity, and a wide range of applications. It can be installed on the hydrogen-blended natural gas transmission pipeline, effectively reducing the risks of gas explosion and hydrogen-induced failure in users, thus solving the problems raised by the above-mentioned background technology.

[0005] In order to achieve the above objectives, the present invention provides the following technical solutions:

[0006] A hydrogen-blended natural gas anti-stratification pipe fitting comprises a cylinder and a blade rotor; two seat holes are symmetrically fixedly mounted on the central inner wall of the cylinder, and flanges are provided at both ends of the cylinder; rolling bearings are installed in both seat holes, and the blade rotor is rotatably connected to the cylinder via the rolling bearings.

[0007] The blade rotor consists of a rotating shaft and flat blades. Six flat blades are evenly distributed on the rotating shaft, and the axis of the rotating shaft is located on the plane of the flat blades.

[0008] The inner ring and rotating shaft, as well as the outer ring and seat hole of the rolling bearing are axially fixed to prevent the bearing from axially moving relative to the shaft or seat hole when subjected to axial load.

[0009] Compared to existing technologies, this new design offers the following advantages: This hydrogen-blended natural gas anti-stratification pipe, comprised of a cylindrical body, bladed rotor, and rolling bearings, utilizes the pressure differential generated by the flow of hydrogen-blended natural gas in the pipeline to drive the bladed rotor's rotation, achieving thorough mixing of natural gas and hydrogen without the need for an external power source. It can be installed on hydrogen-blended natural gas transmission pipelines, thereby reducing the risk of explosions and hydrogen-induced pipeline failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0011] Figure 2 This is a schematic diagram of the three-dimensional structure of the blade rotor of the utility model;

[0012] Figure 3 This is a schematic diagram of the cross-sectional structure of the rolling bearing of the utility model;

[0013] In the figure: 1. Cylinder; 2. Rolling bearing; 3. Seat hole; 4. Flat blade; 5. Rotating shaft; 6. Flange. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] See also Figure 1 A hydrogen-blended natural gas anti-stratification pipe fitting primarily consists of a cylinder and a bladed rotor. Two seat holes 3 are symmetrically fixedly mounted on the central inner wall of the cylinder 1, with flanges 6 located at each end. The seat holes 3 are symmetrically distributed along the central inner wall of the cylinder, each housing a rolling bearing 2. The bladed rotor is positioned within the cylinder and rotatably connected to the cylinder via the rolling bearings.

[0016] See also Figure 2 The blade rotor consists of a rotating shaft 5 and flat blades 4. The rotating shaft 5 is perpendicular to the cylinder axis. Six flat blades 4 are evenly distributed on the rotating shaft 5, and the axis of the rotating shaft is located on the plane of the flat blades 4.

[0017] See also Figure 3 There are two rolling bearings 2, which are respectively arranged in two seat holes 3, and the inner ring of the rolling bearing 2 is axially fixed to the rotating shaft 5 and the outer ring is axially fixed to the seat hole 3 to prevent the bearing from axially moving relative to the shaft or seat hole when bearing axial load. Specific embodiments

[0018] The anti-delamination fitting is connected to a hydrogen-blended natural gas pipeline via flanges 6 at both ends. In operation, the pressure differential generated by the hydrogen-blended natural gas flowing through the pipeline drives the flat blades 4 to rotate about the rotating shaft 5, achieving thorough mixing of the natural gas and hydrogen. Furthermore, because the rotating shaft 5 is axially fixed to the inner ring of the rolling bearing 2, its rotation drives the rolling bearing 2, reducing pressure losses caused by the anti-delamination fitting. The anti-delamination fitting requires no external power supply and offers advantages such as a simple structure, easy installation, and wide applicability.

[0019] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen-blended natural gas anti-stratification pipe fitting, characterized by: It comprises a cylinder and a blade rotor; two seat holes (3) are symmetrically fixedly mounted on the inner wall of the middle portion of the cylinder (1), and flanges (6) are provided at both ends of the cylinder; rolling bearings (2) are installed in both seat holes (3), and the blade rotor is rotatably connected to the cylinder via the rolling bearings.

2. The anti-delamination pipe fitting for hydrogen-blended natural gas according to claim 1, characterized in that: The blade rotor consists of a rotating shaft (5) and flat blades (4), six flat blades (4) are evenly distributed on the rotating shaft (5), and the axis of the rotating shaft is located on the plane of the flat blades.

3. The anti-delamination pipe fitting for hydrogen-blended natural gas according to claim 1 or 2, characterized in that: The inner ring of the rolling bearing (2) is axially fixed to the rotating shaft (5), and the outer ring of the rolling bearing (2) is axially fixed to the seat hole (3).

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