A large-diameter flange structure for oil pipeline

Abstract

The utility model relates to the field of flange technology, and specifically to a large-diameter flange structure for oil pipelines, including: a first oil pipeline and a second oil pipeline; a first flange, a first through hole is provided in its middle, one end of the first oil pipeline extends into the first through hole and is fixedly connected to the first flange; a second flange, a second through hole is provided in its middle, which is arranged on the second oil pipeline; a plurality of fourth through holes are provided along the first through hole on the first flange; a plurality of threaded stoppers are provided along the second through hole on the second flange, and the threaded stoppers pass through the fourth through holes. The utility model can provide more reliable sealing performance through a sealing gasket and a flange connection method. Compared with the traditional large-diameter flange structure, the structure is more simple and compact, the number and complexity of parts are reduced, and the manufacturing cost and maintenance difficulty are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a large-diameter flange structure used for oil pipelines. Background Art

[0002] Large-diameter flange is a type of flange, which is widely used and promoted in the machinery industry, chemical industry, wind power industry, and sewage treatment industry. It is made of carbon steel, stainless steel, and alloy steel.

[0003] Flanges are connected to pipe ends. They are mainly used to connect pipes to each other. They have holes for bolts to connect the two flanges. Gaskets are used to seal the flanges. The gasket is placed between the sealing surfaces of the two flanges. After tightening the nuts, the gasket deforms when the specific pressure on the surface reaches a certain value and fills the uneven parts on the sealing surface, making the connection tight and leak-proof.

[0004] At the same time, the existing large-diameter flange connection sealing structure is complex, inconvenient to install and high cost.

[0005] Therefore, how to simplify the structure of large-diameter flanges while ensuring the sealing performance of the flanges has become a new trend in technological development. Utility Model Content

[0006] In view of this, the utility model proposes a large-diameter flange structure for an oil pipeline, aiming to solve the problem of how to simplify the structure of the large-diameter flange while ensuring the sealing performance of the flange.

[0007] In one aspect, the utility model provides a large-diameter flange structure for an oil pipeline, comprising:

[0008] a first oil pipeline and a second oil pipeline;

[0009] A first flange, wherein a first through hole is formed in the middle thereof, and one end of the first oil pipeline extends into the first through hole and is fixedly connected to the first flange;

[0010] A second flange, a second through hole is formed in the middle thereof and is disposed on the second oil pipeline;

[0011] A plurality of fourth through holes are formed on the first flange along the first through hole;

[0012] A plurality of threaded stoppers are arranged along the second through hole on the second flange, and the threaded stoppers pass through the fourth through hole.

[0013] In some embodiments of the present application, it also includes:

[0014] The sleeve has a third through hole in its middle, one end of the second oil pipeline extends into the third through hole and is fixedly connected to the sleeve, and a limiting portion is provided on the outer side wall of the end of the sleeve connected to the second oil pipeline.

[0015] In some embodiments of the present application, a plurality of fifth through holes are formed on the sleeve at positions corresponding to the fourth through holes and the threaded stoppers.

[0016] In some embodiments of the present application, the second flange is sleeved on the sleeve and abuts against a limiting portion of the sleeve.

[0017] In some embodiments of the present application, it also includes:

[0018] The sealing gasket comprises a first gasket and a second gasket, and the sealing gasket is arranged between the first flange and the sleeve.

[0019] In some embodiments of the present application, the first gasket is a semi-annular structure, both ends of the first gasket are inclined surfaces, and first protrusions are provided on the inclined surfaces at both ends of the first gasket.

[0020] In some embodiments of the present application, the second gasket is a semi-annular structure, both ends of the second gasket are inclined surfaces, and grooves are provided on the inclined surfaces at both ends of the second gasket.

[0021] In some embodiments of the present application, it also includes:

[0022] The nut, the threaded stopper passes through the fifth through hole and the fourth through hole in sequence and is threadedly connected with the nut.

[0023] In some embodiments of the present application, a positioning groove is further provided along the first through hole at one end of the first flange connected to the first oil pipeline, and the positioning groove is an annular groove.

[0024] In some embodiments of the present application, the other end of the sleeve extends out of the second oil pipeline, and one end of the sleeve extending out of the second oil pipeline extends into the positioning groove.

[0025] Compared with the prior art, the beneficial effect of the present invention is that, in the present invention, through the gasket and flange connection method, a more reliable sealing performance can be provided, effectively preventing oil leakage and external pollutants from entering the pipeline system, thereby ensuring the safe operation of the pipeline system. Compared with the traditional large-diameter flange structure, by reasonably setting through holes, limiters and other components, the structure is more concise and compact, the number and complexity of parts are reduced, and the manufacturing cost and maintenance difficulty are reduced. The sleeve design in the structure makes the installation process easier, and it is also more convenient and quick to maintain and replace the gasket, saving the time and energy cost of maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 A schematic diagram of a large-diameter flange structure for an oil pipeline provided in an embodiment of the utility model;

[0028] Figure 2 A top view of a sealing gasket provided in an embodiment of the utility model;

[0029] Figure 3 A side view of a sealing gasket provided in an embodiment of the utility model.

[0030] In the figure: 1. first oil pipeline; 2. second oil pipeline; 3. first flange; 4. second flange; 5. fourth through hole; 6. threaded limiter; 7. sleeve; 8. fifth through hole; 9. sealing gasket; 10. first gasket; 11. first protrusion; 12. second gasket; 13. groove; 14. positioning groove. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Combination Figure 1-3 As shown, this embodiment provides a large-diameter flange structure for an oil pipeline, comprising:

[0036] A first oil pipeline 1 and a second oil pipeline 2;

[0037] A first flange 3, wherein a first through hole is formed in the middle thereof, and one end of the first oil pipeline 1 extends into the first through hole and is fixedly connected to the first flange 3;

[0038] A second flange 4, a second through hole is formed in the middle thereof and is disposed on the second oil pipeline 2;

[0039] A plurality of fourth through holes 5 are formed on the first flange 3 along the first through hole;

[0040] A plurality of thread stoppers 6 are disposed along the second through hole on the second flange 4 , and the thread stoppers 6 pass through the fourth through hole 5 .

[0041] It can be understood that in this embodiment, the first oil pipeline 1 and the second oil pipeline 2 are pipelines for transporting oil. The first flange 3 has a first through hole, and one end of the first oil pipeline 1 is inserted into the first through hole and fixedly connected to the first flange 3. The second flange 4 has a second through hole and is installed on the second oil pipeline 2. A plurality of fourth through holes 5 are provided along the first through hole on the first flange 3, and a plurality of threaded stoppers 6 are provided along the second through hole on the second flange 4, and pass through the fourth through hole 5. The threaded stoppers 6 are used to ensure that the connection between the first flange 3 and the second flange 4 is tight, and pass through the fourth through hole 5. Specifically, this embodiment provides a reliable connection method to ensure the stability and safety of the pipeline system. By setting the threaded stoppers 6, the installation process between the flanges is simplified, and the accuracy and controllability of the connection are improved.

[0042] In a specific embodiment of the present application, it also includes:

[0043] The sleeve 7 has a third through hole in its center, one end of the second oil pipeline 2 extends into the third through hole and is fixedly connected to the sleeve 7, and a limiting portion is provided on the outer side wall of the end of the sleeve 7 connected to the second oil pipeline 2.

[0044] It is understandable that the third through hole in this embodiment is for inserting one end of the second oil pipeline 2 therein and connecting and fixing it with the sleeve 7, which can increase the stability and sealing of the pipeline system, provide a more stable and reliable pipeline connection, and reduce the risk of leakage. The outer wall of the end of the sleeve 7 connected to the second oil pipeline 2 is provided with a limit portion, which makes the installation between pipeline components easier, reduces the errors that may occur during the installation process, and improves work efficiency. The structural design is reasonable, easy to maintain and overhaul, and helps to reduce the operating cost and maintenance cost of the pipeline system.

[0045] In a specific embodiment of the present application, the second flange 4 is sleeved on the sleeve 7 and abuts against a limiting portion of the sleeve 7 .

[0046] It can be understood that the structural stability of the pipeline connection is enhanced in this embodiment. The second flange 4 directly abuts against the sleeve 7 to form a more secure connection, which helps to reduce looseness or misalignment at the connection and improves the stability of the entire pipeline system. The abutment between the second flange 4 and the sleeve 7 can effectively prevent liquid or gas from leaking from the connection, thereby improving the sealing performance of the pipeline system. The limiting portion of the sleeve 7 can ensure that the second flange 4 is correctly positioned on the sleeve 7, reducing errors that may occur during the installation process and improving the installation efficiency. Since the connection is more secure and the sealing is higher, the possibility of failure or leakage in the pipeline system is reduced, thereby reducing the cost of maintenance and repair.

[0047] In a specific embodiment of the present application, it also includes:

[0048] The sealing gasket 9 comprises a first gasket 10 and a second gasket 12 , and the sealing gasket 9 is arranged between the first flange 3 and the sleeve 7 .

[0049] In a specific embodiment of the present application, the first gasket 10 is a semi-annular structure, both ends of the first gasket 10 are inclined surfaces, and first protrusions 11 are provided on the inclined surfaces at both ends of the first gasket 10 .

[0050] In a specific embodiment of the present application, the second gasket 12 is a semi-annular structure, both ends of the second gasket 12 are inclined surfaces, and grooves 13 are provided on the inclined surfaces at both ends of the second gasket 12 .

[0051] It can be understood that the sealing performance between the flange and the sleeve 7 is improved in this embodiment, which effectively prevents liquid or gas leakage and ensures the safe operation of the pipeline system. Through the design of the first protrusion 11 and the groove 13, the first protrusion 11 of the first gasket 10 matches the groove 13 of the second gasket 12, and the sealing gasket 9 can better adapt to the shape difference between the flange and the sleeve 7, thereby enhancing the reliability and stability of the sealing effect, reducing the risk of leakage and environmental pollution, and also reducing the cost of maintenance and repair of the pipeline system. At the same time, the structural design is reasonable, easy to install and replace, and improves the operating efficiency and maintainability of the pipeline system.

[0052] In a specific embodiment of the present application, a plurality of fifth through holes 8 are formed at positions corresponding to the sleeve 7 , the fourth through hole 5 and the threaded stopper 6 .

[0053] In a specific embodiment of the present application, it also includes:

[0054] The nut, the threaded stopper 6 passes through the fifth through hole 8 and the fourth through hole 5 in sequence and is threadedly connected with the nut.

[0055] It can be understood that the present embodiment enhances the reliability and stability of the pipeline connection. By introducing the nut, it can ensure that the connection between the threaded stopper 6 and the sleeve 7 is firm and reliable, avoiding pipeline failure or leakage caused by looseness during use. The setting of the threaded stopper 6 enables the threaded stopper 6 to be in the correct position, and the setting of the nut enables the first flange 3 and the second flange 4 to be fixed, ensuring the accuracy and controllability of the connection and reducing the errors that may occur during the installation process. At the same time, the installation of the nut and the threaded stopper 6 is easier, and it also provides convenience for future maintenance and replacement. Specifically, by enhancing the structural stability and tightness of the connection, the risk of leakage caused by connection failure is reduced, thereby improving the safety and reliability of the pipeline system.

[0056] In a specific embodiment of the present application, a positioning groove 14 is further provided along the first through hole at one end of the first flange 3 connected to the first oil pipeline 1 , and the positioning groove 14 is an annular groove.

[0057] In a specific embodiment of the present application, the other end of the sleeve 7 extends out of the second oil pipeline 2 , and one end of the sleeve 7 extending out of the second oil pipeline 2 extends into the positioning groove 14 .

[0058] It is understandable that the positioning groove 14 in this embodiment is annular, which can ensure that the end of the first flange 3 connected to the first oil pipeline 1 is accurately matched with the insertion position of the sleeve 7, ensuring the accuracy and stability of the pipeline connection, thereby reducing the risk of loosening or misalignment of the connection. The design of the positioning groove 14 fixes the relative position between the end of the first flange 3 connected to the first oil pipeline 1 and the sleeve 7, reducing the potential safety hazards caused by the movement of the pipeline connection during operation. When the pipeline connection parts need to be maintained or replaced, the design of the positioning groove 14 makes it easier to disassemble and reinstall. The operator can accurately locate and adjust the connection parts more quickly, improving the efficiency of maintenance.

[0059] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-diameter flange structure for oil pipelines, characterized in that: include: a first oil pipeline and a second oil pipeline; A first flange, wherein a first through hole is formed in the middle thereof, and one end of the first oil pipeline extends into the first through hole and is fixedly connected to the first flange; A second flange, a second through hole is formed in the middle thereof and is disposed on the second oil pipeline; A plurality of fourth through holes are formed on the first flange along the first through hole; A plurality of threaded stoppers are arranged along the second through hole on the second flange, and the threaded stoppers pass through the fourth through hole.

2. The large-diameter flange structure for oil pipeline according to claim 1 is characterized in that: Also includes: The sleeve has a third through hole in its middle, one end of the second oil pipeline extends into the third through hole and is fixedly connected to the sleeve, and a limiting portion is provided on the outer side wall of the end of the sleeve connected to the second oil pipeline.

3. The large-diameter flange structure for oil pipeline according to claim 2 is characterized in that: A plurality of fifth through holes are formed at positions corresponding to the sleeve, the fourth through hole and the threaded stopper.

4. The large-diameter flange structure for oil pipeline according to claim 2 is characterized in that: The second flange is sleeved on the sleeve and abuts against the limiting portion of the sleeve.

5. The large-diameter flange structure for oil pipeline according to claim 2, characterized in that: Also includes: The sealing gasket comprises a first gasket and a second gasket, and the sealing gasket is arranged between the first flange and the sleeve.

6. The large-diameter flange structure for oil pipeline according to claim 5, characterized in that: The first gasket is a semi-annular structure, both ends of the first gasket are inclined surfaces, and first protrusions are arranged on the inclined surfaces at both ends of the first gasket.

7. The large-diameter flange structure for oil pipeline according to claim 5, characterized in that: The second gasket is a semi-annular structure, both ends of the second gasket are inclined surfaces, and grooves are arranged on the inclined surfaces at both ends of the second gasket.

8. The large-diameter flange structure for oil pipeline according to claim 3, characterized in that: Also includes: The nut, the threaded stopper passes through the fifth through hole and the fourth through hole in sequence and is threadedly connected with the nut.

9. The large-diameter flange structure for oil pipeline according to claim 4, characterized in that: A positioning groove is also provided along the first through hole at one end of the first flange connected to the first oil pipeline, and the positioning groove is an annular groove.

10. The large-diameter flange structure for oil pipeline according to claim 9, characterized in that: The other end of the sleeve extends out of the second oil pipeline, and one end of the sleeve extending out of the second oil pipeline extends into the positioning groove.

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