Special material hydrogen-resistant pipeline for petroleum and natural gas

Abstract

The utility model discloses a special material hydrogen-resistant pipeline for petroleum and natural gas, and relates to the technical field of natural gas pipelines. The device comprises two pipelines, flanges are welded to one ends of the two pipelines, a plurality of penetrating second screws are connected between the two flanges in an inserted mode, fixing nuts used for positioning are fixedly connected to the circumferences of the second screws, and locking nuts used for fixing the flanges are connected to the circumferences of the second screws in a threaded mode. The outer walls of the two pipelines are each provided with two semi-ring sleeves, one side of each semi-ring sleeve is fixedly connected with a plurality of sleeves, and the two ends of a second screw are connected with the sleeves on the two sides in an inserted mode correspondingly. According to the utility model, after the pipelines are connected, the sleeve and the second screw rod are sleeved together, so that the stability of the connection between the two pipelines is improved, the movement between the connecting parts of the two pipelines is avoided, the service life of the gasket is prolonged, and meanwhile, the sleeve is propped against the locking nut, so that the movement of the locking nut is avoided, and the stability of the connection is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas pipelines, and particularly relates to a special material hydrogen-resistant pipeline for oil and natural gas. Background Technique

[0002] A natural gas pipeline refers to a pipeline that transports natural gas from the production site or treatment plant to the urban gas distribution center or industrial enterprise users, also known as a gas transmission pipeline. This pipeline system is the main way to transport natural gas in large quantities on land, accounting for about half of the total pipeline length in the world. The utilization of natural gas pipelines has greatly promoted the energy transmission efficiency and is an important infrastructure for energy supply in modern society;

[0003] During the pipeline laying process, some pipelines are connected by flanges and gaskets for sealing are arranged at the joints. At the same time, they are suspended. After long-term use, the force is uneven, reducing the service life of the gaskets. For this reason, a special material hydrogen-resistant pipeline for oil and natural gas is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a special material hydrogen-resistant pipeline for oil and natural gas. After the pipelines are connected, a sleeve is sleeved between the sleeve and the second screw rod, thereby increasing the connection stability between the two pipelines, avoiding the movement between the joints of the two pipelines, increasing the service life of the gasket. At the same time, the sleeve abuts against the locking nut, avoiding the movement of the locking nut and improving the connection stability, solving the existing technical problems.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] A special material hydrogen-resistant pipeline for oil and natural gas, comprising: two pipelines, flanges are welded at one ends of the two pipelines, a plurality of penetrating second screw rods are inserted between the two flanges, positioning fixing nuts are fixedly connected to the circumferences of the second screw rods, and locking nuts for fixing the flanges are threadedly connected to the circumferences of the second screw rods;

[0007] Two semi-ring sleeves are arranged on the outer walls of the two pipelines, a plurality of sleeves are fixedly connected to one sides of the semi-ring sleeves respectively, the two ends of the second screw rod are respectively inserted into the sleeves on both sides, a plurality of first screw rods are inserted between the semi-ring sleeves on both sides, and first nuts for connecting and fixing the semi-ring sleeves on both sides are threadedly connected to one ends of the first screw rods. Through the cooperation of the sleeve and the second screw rod, after the pipelines are connected, the sleeve is sleeved with the second screw rod, thereby increasing the connection stability between the two pipelines, avoiding the movement between the joints of the two pipelines, and increasing the service life of the gasket.

[0008] As a further solution of the utility model, extension blocks are integrally formed on the circumferential outer walls of the semi-circular sleeves, and second fixing bolts are arranged between adjacent two extension blocks. The two semi-circular sleeves on the same side are fixed by the second fixing bolts. By using the sleeve, after the first nut is tightened, the semi-circular sleeves are fixed, and at this time, the sleeve abuts against the locking nut to prevent the locking nut from moving, thereby improving the connection stability.

[0009] As a further solution of the utility model, positioning cylinders are fixedly connected to the circumferential outer walls of two of the semi-circular sleeves, insertion rods are inserted into the positioning cylinders, and the tops of the two insertion rods are fixedly connected to the same protective cover.

[0010] As a further solution of the utility model, a setscrew is threadedly connected to one side of each of the positioning cylinders for fixing the insertion rod.

[0011] As a further solution of the utility model, a snap ring is arranged on the circumference of the first screw rod for fixing the first nut.

[0012] As a further solution of the utility model, a gasket is arranged between the two flanges, and the gasket is made of polytetrafluoroethylene.

[0013] In this application, the two flanges are brought closer, then a gasket is placed between the two flanges, the second screw rod is inserted between the two flanges, the insertion length of the second screw rod is positioned by the fixing nut, and then the two flanges are connected and fixed together by the locking nut. Subsequently, the semi-circular sleeves are placed around the circumference of the pipeline and connected by the second fixing bolts. Then, the sleeve on the semi-circular sleeve is sleeved on the second screw rod, the first screw rod is inserted between the semi-circular sleeves and tightened by the first nut, so as to fix between the semi-circular sleeves. At this time, the sleeve abuts against the locking nut to prevent the locking nut from moving. At the same time, the sleeve and the second screw rod are sleeved together, thereby increasing the connection stability between the two pipelines, avoiding the situation that the force at the connection is uneven due to the long-term suspension of the pipeline, preventing the movement between the connections of the two pipelines, increasing the service life of the gasket. Finally, the second fixing bolts on the semi-circular sleeves are tightened, and finally the protective cover is installed above the semi-circular sleeves.

[0014] The embodiments of the utility model have the following beneficial effects:

[0015] In the utility model, by the combined use of the sleeve and the second screw rod, after the pipelines are connected, the sleeve and the second screw rod are sleeved together, thereby increasing the connection stability between the two pipelines, preventing the movement between the connections of the two pipelines, and increasing the service life of the gasket;

[0016] In the present utility model, by using the sleeve, after the first nut is tightened, the semi-ring sleeves are fixed. At this time, the sleeve abuts against the locking nut to prevent the movement of the locking nut and improve the connection stability.

[0017] In the present utility model, after the pipes are connected, the sleeve and the second screw rod are sleeved together, thereby increasing the connection stability between the two pipes, preventing the movement between the joints of the two pipes, increasing the service life of the gasket, and at the same time, the sleeve abuts against the locking nut to prevent the movement of the locking nut and improve the connection stability.

[0018] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 is a three-dimensional structure schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 is a cross-sectional structure schematic diagram of an embodiment of the present utility model;

[0022] Figure 3 is an exploded structure schematic diagram of an embodiment of the present utility model.

[0023] In the figure: 1, pipe; 2, protective cover; 3, positioning cylinder; 4, insertion rod; 401, top screw; 5, semi-ring sleeve; 6, first screw rod; 7, first nut; 8, snap ring; 9, sleeve; 10, second screw rod; 11, fixing nut; 12, locking nut; 13, flange; 14, gasket; 15, extension block; 16, second fixing bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0025] In the description of the present utility model, it should be understood that terms such as "opening", "upper", "middle", "length", "inner", etc. indicating orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0026] To keep the following description of the embodiments of the present utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0027] Embodiment 1

[0028] Please refer to Figures 1 - 3 As shown, in this embodiment, a pipeline is provided, including: two pipelines 1. At one end of each of the two pipelines 1, a flange 13 is welded. A plurality of penetrating second screws 10 are inserted between the two flanges 13. Fixing nuts 11 for positioning are fixedly connected to the circumferences of the second screws 10. The fixing nuts 11 are used to position the insertion length of the second screws 10. Locking nuts 12 for fixing the flanges 13 are threadedly connected to the circumferences of the second screws 10. By tightening the locking nuts 12, the two flanges 13 can be connected and fixed together;

[0029] On the outer walls of both of the two pipelines 1, two semi - ring sleeves 5 are provided. On one side of each semi - ring sleeve 5, a plurality of sleeves 9 are fixedly connected. The two ends of the second screw 10 are respectively inserted into the sleeves 9 on both sides. A plurality of first screws 6 are inserted between the semi - ring sleeves 5 on both sides. At one end of each first screw 6, a first nut 7 for connecting and fixing the semi - ring sleeves 5 on both sides is threadedly connected. The sleeves 9 and the second screw 10 are sleeved together, thereby increasing the connection stability between the two pipelines 1 and avoiding the situation that the force at the connection is uneven due to the pipelines 1 being suspended for a long time.

[0030] This application can be used in the field of special materials anti - hydrogen pipelines for oil and gas, and can also be used in other fields applicable to this application.

[0031] Embodiment 2

[0032] Based on Embodiment 1, an improvement is made: a special material anti - hydrogen pipeline for oil and gas, referring to the attached Figures 1 - 3 , which is applied to the field of special materials anti - hydrogen pipelines for oil and gas,

[0033] In the present utility model, extension blocks 15 are integrally formed on the circumferential outer walls of the semi - ring sleeves 5. Second fixing bolts 16 are provided between adjacent two extension blocks 15. The semi - ring sleeves 5 on the same side are fixed by the second fixing bolts 16. By tightening the second fixing bolts 16, the semi - ring sleeves 5 are fixed on the pipelines 1.

[0034] Particularly, positioning cylinders 3 are fixedly connected to the circumferential outer walls of both of the two semi-ring sleeves 5. Plug rods 4 are inserted into the positioning cylinders 3. The tops of the two plug rods 4 are fixedly connected to the same protective cover 2, and the protective cover 2 can provide the effects of sunshading and rain shielding.

[0035] It should be noted that a setscrew 401 is threadedly connected to one side of each positioning cylinder 3 for fixing the plug rod 4, and the setscrew 401 increases the stability of the protective cover 2.

[0036] In the present utility model, retaining rings 8 are arranged on the circumference of the first screw rod 6 for fixing the first nuts 7. The retaining rings 8 limit the first nuts 7 to prevent the first nuts 7 from loosening.

[0037] Particularly, a gasket 14 is arranged between the two flanges 13. The gasket 14 is made of polytetrafluoroethylene, and the gasket 14 increases the sealing effect of the connection between the flanges 13.

[0038] It should be noted that in the description of this specification, the descriptions such as "first", "second", etc. are only used to distinguish each feature, and do not have an actual order or directional meaning. The present application is not limited thereto.

[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A special material hydrogen-resistant pipeline for petroleum and natural gas, characterized in that: include: Two pipes (1), one end of each pipe (1) is welded with a flange (13), a plurality of second screw rods (10) are inserted between the two flanges (13), the circumference of each second screw rod (10) is fixedly connected with a fixing nut (11) for positioning, and the circumference of each second screw rod (10) is threadedly connected with a locking nut (12) for fixing the flange (13); Two semi-annular sleeves (5) are arranged on the outer walls of the two pipes (1), one side of the semi-annular sleeves (5) is fixedly connected with a plurality of sleeves (9), both ends of the second screw rod (10) are respectively plugged into the sleeves (9) on both sides, a plurality of first screw rods (6) are plugged into between the semi-annular sleeves (5) on both sides, and one end of the first screw rod (6) is threadedly connected with a first nut (7) for connecting and fixing the semi-annular sleeves (5) on both sides.

2. A special material hydrogen-resistant pipeline for petroleum and natural gas as claimed in claim 1, characterized in that: The circumferential outer wall of the semi-annular sleeve (5) is integrally formed with an extension block (15), and a second fixing bolt (16) is provided between two adjacent extension blocks (15). The two semi-annular sleeves (5) on the same side are fixed by the second fixing bolt (16).

3. The special material hydrogen-resistant pipeline for petroleum and natural gas according to claim 2, characterized in that: The circumferential outer walls of the two semi-annular sleeves (5) are fixedly connected to positioning tubes (3), and the positioning tubes (3) are inserted with insertion rods (4). The tops of the two insertion rods (4) are fixedly connected to the same protective cover (2).

4. A special material hydrogen-resistant pipeline for petroleum and natural gas as claimed in claim 3, characterized in that: One side of the positioning cylinder (3) is threadedly connected with a top screw (401) for fixing the insertion rod (4).

5. The special material hydrogen-resistant pipeline for petroleum and natural gas according to claim 1, characterized in that: The circumference of the first screw rod (6) is provided with a retaining spring (8) for fixing the first nut (7).

6. The special material hydrogen-resistant pipeline for petroleum and natural gas according to claim 1, characterized in that: A gasket (14) is arranged between the two flanges (13), and the gasket (14) is made of polytetrafluoroethylene.

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