Sealing structure of pipeline connecting flange

Abstract

The utility model relates to the technical field of flanges, and discloses a sealing structure of a pipeline connecting flange, which comprises a flange assembly, a connecting assembly movably connected to the flange assembly, and a transportation assembly fixedly connected to one end of the flange assembly, the flange assembly comprises a flange plate, and one side of the flange plate is fixedly connected with a pipeline connecting end. The other side of each flange plate is provided with a mounting groove A, the inner side surface of the mounting groove A is movably connected with a sealing ring A, an annular groove is formed in the mounting groove A, a mounting groove B is formed in the annular groove, a mounting seat is arranged in the mounting groove B, and one side of the mounting seat is movably connected with a sealing ring B. The connecting assembly comprises a bolt, and the bolt penetrates through the pair of flange plates and then is in threaded connection with a nut. The transportation assembly comprises a pipeline, one end of the pipeline is fixedly connected with the pipeline connecting end, the flange assembly is arranged, two sets of sealing rings are designed to improve the overall sealing performance, meanwhile, a spring provides thrust for an installation base to completely extrude a sealing ring B, and therefore the sealing performance between flanges is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flanges, in particular to a sealing structure of a pipeline connection flange. Background Art

[0002] A flange, also known as a flange convex disc or a flange. A flange is a part used for connecting shafts to each other and is used for connecting between pipe ends; there are also flanges used at the inlets and outlets of equipment for connecting between two pieces of equipment, such as a reducer flange. A flange connection or a flange joint refers to a detachable connection composed of a flange, a gasket, and bolts connected to each other as a set of combined sealing structures.

[0003] Chinese patent document CN213809338U discloses a flange with a double sealing structure, including a first connecting flange, a second connecting flange, threaded holes, threaded rods, connecting rods, fixing blocks, mounting ports, a first connecting disc, a first groove, a first sealing ring, a second sealing ring, a second connecting disc, a first groove, a second groove, a second groove, a first pipeline, and a second pipeline. In this utility model, the first connecting disc is welded to the docking end of the first pipeline, the second connecting flange is welded to the docking end of the second pipeline, the two sealing rings are respectively placed in the grooves of the second connecting flange, the first connecting flange is movably sleeved on the first pipeline, and the first connecting flange and the second connecting flange are connected by a threaded rod so that the connecting disc of the first pipeline and the second connecting flange compress the sealing rings to achieve sealing at the interface, thereby realizing that the first connecting flange can rotate around the pipeline to adjust the angle, which is convenient for aligning the threaded holes of the first connecting flange and the second connecting flange during installation, and has a double sealing effect. However, the sealing structure of this flange is to place the sealing ring in the groove, and then connect the two groups of flange discs together by a threaded rod and compress the sealing ring to complete the sealing. Only the compression force provided by the threaded rod is limited and cannot maximize the sealing effect of the sealing ring. Summary of the Utility Model

[0004] The purpose of the present utility model is to solve the problem that existing cooking equipment does not have a waste heat recovery device, so that the heat generated during cooking on the stove is wasted, and additional electricity is required to heat the steamer, resulting in a certain amount of energy loss, and to propose a sealing structure of a pipeline connection flange.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A sealing structure for a pipeline connection flange, comprising a flange assembly, a connection assembly movably connected to the flange assembly, and a transportation assembly fixedly connected to one end of the flange assembly. The flange assembly includes a flange plate, a pipeline connection end fixedly connected to one side of the flange plate, an installation groove A opened on the other side of the flange plate, a sealing ring A movably connected to the inner surface of the installation groove A, an annular groove provided inside the installation groove A, an annular groove opened on the other side of the flange plate, a heat insulation ring movably connected to the inner surface of the annular groove, an installation groove B provided inside the annular groove, an installation groove B opened on the other side of the flange plate, an installation seat provided in the installation groove B, and a sealing ring B movably connected to one side of the installation seat. The connection assembly includes a bolt, the bolt passes through a pair of flange plates and is threadedly connected to a nut, a gasket is sleeved on the outer surface of the bolt, one side of the gasket is movably connected to the flange plate, and the other side of the gasket is movably connected to the nut. The transportation assembly includes a pipeline, and one end of the pipeline is fixedly connected to the pipeline connection end.

[0006] Preferably, the flange plate is provided with installation holes;

[0007] For facilitating the use of bolts and nuts to fix two sets of flange plates together.

[0008] Preferably, the heat insulation ring is made of ceramic fiber material;

[0009] For preventing the sealing ring A from deforming due to the too high medium transported inside the pipeline.

[0010] Preferably, an installation groove C is opened on one side of the installation seat, a spring is fixedly connected to the other side of the installation groove C, and one end of the spring is fixedly connected to the flange plate;

[0011] For providing a thrust to the sealing ring B on the installation seat through the spring to increase the sealing performance between it and the flange.

[0012] Preferably, a reinforcing layer is provided inside the sealing ring B;

[0013] For increasing the overall strength of the sealing ring B.

[0014] Preferably, the gasket is provided with anti-slip grooves;

[0015] For increasing the friction between the gasket and the flange and the nut to prevent the nut from loosening from the bolt.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. A sealing structure for a pipeline connection flange proposed by the utility model, by setting the flange assembly, while designing two sets of sealing rings to increase the overall sealing performance, a thrust is provided to the installation seat through the spring to completely squeeze the sealing ring B, thereby increasing the sealing performance between the flanges.

[0018] 2. A sealing structure for a pipeline connection flange proposed by the present utility model adds a set of gaskets between the flange plate and the nut by setting a connection component, increasing the friction between the nut and the flange plate, preventing loosening between the bolt and the nut, and thus affecting the overall sealing performance of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a sealing structure for a pipeline connection flange proposed by the present utility model;

[0020] Figure 2 It is a schematic cross-sectional view of a flange assembly of a sealing structure for a pipeline connection flange proposed by the present utility model;

[0021] Figure 3 It is a schematic diagram of the overall structure of a connection component of a sealing structure for a pipeline connection flange proposed by the present utility model;

[0022] Figure 4 It is a schematic diagram of the overall structure of a sealing ring of a sealing structure for a pipeline connection flange proposed by the present utility model;

[0023] Figure 5 It is a schematic cross-sectional view of a mounting seat of a sealing structure for a pipeline connection flange proposed by the present utility model;

[0024] Figure 6 It is a schematic cross-sectional view of a sealing ring B of a sealing structure for a pipeline connection flange proposed by the present utility model;

[0025] LEGEND DESCRIPTION:

[0026] 1. Flange assembly; 11. Flange plate; 111. Mounting hole; 12. Pipeline connection end; 13. Mounting groove A; 14. Sealing ring A; 15. Annular groove; 16. Heat insulation ring; 17. Mounting groove B; 18. Mounting seat; 181. Mounting groove C; 182. Spring; 19. Sealing ring B; 191. Reinforcing layer; 2. Connection component; 21. Bolt; 22. Nut; 23. Gasket; 231. Anti-slip groove; 3. Transportation component; 31. Pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Referring to Figures 1-6 , an embodiment provided by the present utility model: a sealing structure for a pipeline connection flange, including a flange assembly 1, a connection assembly 2 is movably connected to the flange assembly, and a transportation assembly 3 is fixedly connected to one end of the flange assembly 1. The flange assembly 1 includes a flange plate 11, a pipeline connection end 12 is fixedly connected to one side of the flange plate 11, an installation groove A13 is opened on the other side of the flange plate 11, a sealing ring A14 is movably connected to the inner surface of the installation groove A13 to increase the overall sealing performance of the flange assembly 1. An annular groove 15 is provided inside the installation groove A13, an annular groove 15 is opened on the other side of the flange plate 11, and a heat insulation ring 16 is movably connected to the inner surface of the annular groove 15 to prevent the temperature inside the pipeline from affecting the sealing ring A and causing it to deform, thereby affecting the overall sealing performance. An installation groove B17 is provided inside the annular groove 15, an installation groove B17 is opened on the other side of the flange plate 11, and an installation seat 18 is provided inside the installation groove B17 to apply a thrust to the sealing ring B to increase the overall sealing performance of the flange assembly 1. A sealing ring B19 is movably connected to one side of the installation seat 18. The connection assembly 2 includes a bolt 21, the bolt 21 passes through a pair of flange plates 11 and is threadedly connected to a nut 22. A gasket 23 is sleeved on the outer surface of the bolt 21 to prevent the nut from loosening during operation. One side of the gasket 23 is movably connected to the flange plate 11, and the other side of the gasket 23 is movably connected to the nut 22. The transportation assembly 3 includes a pipeline 31, and one end of the pipeline 31 is fixedly connected to the pipeline connection end 12.

[0030] The flange 11 is provided with mounting holes 111, which facilitates the installation of two sets of flanges 11 together. The heat insulation ring 16 is made of ceramic fiber. One side of the mounting seat 18 is provided with a mounting groove C181, which is convenient for placing the sealing ring B19. The other side of the mounting groove C181 is fixedly connected with a spring 182, which applies a thrust to the sealing ring B19. One end of the spring 182 is fixedly connected to the flange 11. A reinforcing layer 191 is arranged inside the sealing ring B19 to increase the overall strength of the sealing ring B19. The gasket 23 is provided with anti-slip grooves 231 to increase the friction between the gasket 23 and the nut 22.

[0031] Working principle: First, the sealing ring A14 is installed into the mounting groove A13 in sequence, the heat insulation ring 16 is installed into the annular groove 15, and finally the sealing ring B19 is installed into the mounting groove B181. Then, the two sets of flanges 11 are aligned and installed together through the bolts 21 and nuts 22. At the same time, due to the spring 182, a thrust is continuously provided to the mounting seat 18. Thus, under the combined action of the flange 11 and the mounting seat 18, the sealing ring B19 is fully squeezed to improve the overall sealing performance of the device.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sealing structure for a pipeline connection flange, comprising a flange assembly (1), a connection assembly (2) movably connected to the flange assembly, and a transport assembly (3) fixedly connected to one end of the flange assembly (1), characterized in that: The flange assembly (1) comprises a flange (11), one side of the flange (11) is fixedly connected to a pipe connection end (12), the other side of the flange (11) is provided with a mounting groove A (13), the inner surface of the mounting groove A (13) is movably connected to a sealing ring A (14), an annular groove (15) is arranged inside the mounting groove A (13), the other side of the flange (11) is provided with an annular groove (15), the inner surface of the annular groove (15) is movably connected to a heat insulation ring (16), an mounting groove B (17) is arranged inside the annular groove (15), and the other side of the flange (11) is provided with a mounting groove A groove B (17) is provided in the installation groove B (17), a mounting seat (18) is movably connected to one side of the mounting seat (18) with a sealing ring B (19), a connection component (2) comprises a bolt (21), the bolt (21) penetrates through a pair of flanges (11) and is threadedly connected to a nut (22), a gasket (23) is sleeved on the outer surface of the bolt (21), one side of the gasket (23) is movably connected to the flange (11), and the other side of the gasket (23) is movably connected to the nut (22), and a transport component (3) comprises a pipe (31), one end of the pipe (31) is fixedly connected to a pipe connection end (12).

2. The sealing structure of a pipeline connecting flange according to claim 1, characterized in that: The flange (11) is provided with a mounting hole (111).

3. The sealing structure of a pipeline connecting flange according to claim 1, characterized in that: The heat insulation ring (16) is made of ceramic fiber material.

4. The sealing structure of a pipeline connecting flange according to claim 1, characterized in that: A mounting groove C (181) is provided on one side of the mounting seat (18), a spring (182) is fixedly connected to the other side of the mounting groove C (181), and one end of the spring (182) is fixedly connected to the flange (11).

5. The sealing structure of a pipeline connecting flange according to claim 1, characterized in that: A reinforcement layer (191) is provided inside the sealing ring B (19).

6. The sealing structure of a pipeline connecting flange according to claim 1, characterized in that: The gasket (23) is provided with an anti-slip groove (231).

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