CN222559443U - Pressure pipeline flange joint - Google Patents

Abstract

The utility model discloses a pressure pipeline flange joint, which comprises a first pipeline and a second pipeline, wherein flange joints are fixedly connected to the ends, close to each other, of the first pipeline and the second pipeline, a sealing piece is arranged between the two flange joints, the sealing piece comprises a first sealing gasket arranged between the two flange joints, and an integrated third sealing gasket is fixed on the outer cambered surface of the first sealing gasket. The sealing piece comprises a first sealing gasket, a second sealing gasket and a third sealing gasket, wherein the first sealing gasket is positioned between two flange joints to seal the connecting surface of the two flange joints, one side of the second sealing gasket is attached to the intrados of the two flange joints to seal the inner connecting position of the two flange joints, one side of the third sealing gasket is attached to the extrados of the two flange joints to seal the outer connecting position of the two flange joints, and the sealing piece is simultaneously sealed in multiple layers from three positions, so that the sealing piece has a better leakage prevention effect.

Description

Pressure pipeline flange joint

Technical Field

The utility model relates to the technical field of flange joints, in particular to a pressure pipeline flange joint.

Background

Pressure pipes refer to all pipes which are subjected to internal or external pressure, whatever the medium in the pipe. Pressure conduits are part of the piping used to convey, distribute, mix, separate, discharge, meter, control and stop fluid flow. The flange joint is an appliance applied to flange sealing, and has the characteristics of small volume, light weight and good elasticity.

The mode of flange joint leaks the risk height, needs sealed pad to strengthen sealed effect, prevents to reveal, and current sealed pad only locates between two ring flanges, and sealed effect is limited.

Disclosure of utility model

The utility model aims to provide a pressure pipeline flange joint, which solves the problems that in the prior art, the leakage risk is high in a flange connection mode, and a sealing gasket is only arranged between two flange plates, so that the sealing effect is limited.

In order to achieve the purpose, the pressure pipeline flange joint comprises a first pipeline and a second pipeline, wherein flange joints are fixedly connected to the ends, close to each other, of the first pipeline and the second pipeline, sealing pieces are arranged between the two flange joints, each sealing piece comprises a first sealing pad arranged between the two flange joints, an integrated third sealing pad is fixed on the outer cambered surface of the first sealing pad, one side, close to the first sealing pad, of the third sealing pad is attached to the outer cambered surfaces of the two flange joints, an integrated second sealing pad is fixedly connected to the inner cambered surfaces of the first sealing pad, and one side, close to the first sealing pad, of the second sealing pad is attached to the inner cambered surfaces of the two flange joints.

Preferably, a side of the second sealing pad away from the first sealing pad is provided with an arc-shaped surface.

Preferably, grooves are formed in the inner walls of the first pipeline and the second pipeline and correspond to the flange joints, and one side, close to the first sealing gasket, of the second sealing gasket is matched with the inner surface of the groove.

Preferably, a fastener is arranged between the two flange joints.

Preferably, the fastener is a bolt.

Compared with the prior art, the utility model has the beneficial effects that:

The sealing element comprises a first sealing gasket, a second sealing gasket and a third sealing gasket, wherein the first sealing gasket is positioned between two flange joints to seal the connecting surfaces of the two flange joints, the second sealing gasket is positioned inside a first pipeline and a second pipeline, one side of the second sealing gasket is attached to the intrados of the two flange joints to seal the connecting positions of the two flange joints, the third sealing gasket is positioned outside the first pipeline and the second pipeline, one side of the third sealing gasket is attached to the extrados of the two flange joints to seal the outer connecting positions of the two flange joints, and the sealing gasket is simultaneously sealed in multiple layers from three positions, so that the sealing element has a better leakage prevention effect.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the appearance structure of the present utility model;

FIG. 2 is a schematic diagram of a split structure of the present utility model;

Fig. 3 is a schematic view of the internal structure of the present utility model.

In the figure, 1, a first pipeline, 2, a second pipeline, 3, a flange joint, 4, a fastener, 5, a sealing element, 6, a first sealing gasket, 7, a second sealing gasket, 8, a third sealing gasket and 9, and a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, in the embodiment of the present utility model, a flange joint for a pressure pipeline includes a first pipeline 1 and a second pipeline 2, where the first pipeline 1 and the second pipeline 2 are used for conveying, distributing, mixing, separating, discharging, metering, controlling and stopping fluid flow, and one ends of the first pipeline 1 and the second pipeline 2, which are close to each other, are fixedly connected with a flange joint 3, and the connection between the first pipeline 1 and the second pipeline 2 can be achieved through the fixed connection of the two flange joints 3.

Referring to fig. 1-3, a sealing member 5 is disposed between two flange joints 3, the sealing member 5 is used for sealing the junction of the two flange joints 3, medium leakage inside a first pipeline 1 and a second pipeline 2 is avoided, the sealing member 5 comprises a first sealing pad 6 disposed between the two flange joints 3, the upper surface and the lower surface of the first sealing pad 6 are respectively attached to the two flange joints 3, so as to seal the junction of the two flange joints 3, an integrated third sealing pad 8 is fixed on the outer arc surface of the first sealing pad 6, one side of the third sealing pad 8 close to the first sealing pad 6 is attached to the outer arc surface of the two flange joints 3, an integrated second sealing pad 7 is fixedly connected to the inner arc surface of the first sealing pad 6, one side of the second sealing pad 7 close to the first sealing pad 6 is attached to the inner arc surface of the two flange joints 3, the third sealing pad 8 is located outside the first pipeline 1 and the second pipeline 2, one side of the first sealing pad 6 is attached to the two flange joints 3, and the two sealing pads 3 are attached to the inner arc surface of the first sealing pad 3 are located at the two sides of the two flange joints, and the two sealing pads are better in effect is better.

Referring to fig. 2-3, in order to make the second gasket 7 have a better sealing effect on the connection portion between the two flange joints 3, a side of the second gasket 7 away from the first gasket 6 is provided with an arc surface, and the arc surface thickens the portion of the second gasket 7 located at the connection portion between the two flange joints 3 so as to have a better pressure-resistant capability, thereby having a better sealing effect.

Referring to fig. 2-3, in order to make the second gasket 7 have a better sealing effect on the connecting portion between the two flange joints 3, the inner walls of the first and second pipelines 1 and 2 are provided with grooves 9 corresponding to the flange joints 3, one side of the second gasket 7 close to the first gasket 6 is matched with the inner surfaces of the grooves 9, and two ends of the second gasket 7 can be respectively clamped into the first and second pipelines 1 and 2 by the arrangement of the grooves 9, so that the second gasket 7 is prevented from being curled and separated from the first and second pipelines 1 and 2 due to the impact of medium flow in the first and second pipelines 1 and 2 on the connecting ends of the second gasket 7 and the first and second pipelines 1 and 2.

Referring to fig. 1-3, in order to achieve the connection between the two flange joints 3, a fastener 4 is disposed between the two flange joints 3, and the two flange joints 3 are fastened and connected by the fastener 4.

Referring to fig. 1-3, the fastener 4 is preferably a bolt, and the bolt can realize the fastening connection of the fastener 4 to the two flange joints 3, and the cost is low.

When the sealing device is used, the sealing piece 5 is placed on the flange joint 3 of the second pipeline 2, the flange joint 3 of the first pipeline 1 is placed on the sealing piece 5, the two flange joints 3 are tightly connected through the fastening piece 4, the first sealing gasket 6 is positioned between the two flange joints 3, the upper surface and the lower surface of the first sealing gasket 6 are respectively attached to the two flange joints 3 so as to seal the connecting surfaces of the two flange joints 3, the second sealing gasket 7 is positioned inside the first pipeline 1 and the second pipeline 2, one side of the second sealing gasket 7 close to the first sealing gasket 6 is attached to the inner cambered surfaces of the two flange joints 3 so as to seal the inner connecting positions of the two flange joints 3, the third sealing gasket 8 is positioned outside the first pipeline 1 and the second pipeline 2, one side of the third sealing gasket 8 close to the first sealing gasket 6 is attached to the outer cambered surfaces of the two flange joints 3 so as to seal the outer connecting positions of the two flange joints 3, the sealing gasket 7 is simultaneously sealed in multiple layers from three positions, and the sealing gasket 7 can be better prevented from being blocked by the grooves 9, so that the second sealing gasket 7 can be attached to the inner sides of the first pipeline 1 and the second pipeline 2 can be prevented from being impacted by the inner edges of the first pipeline 1 and the second pipeline 2.

Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present utility model, and the present utility model is not limited to the above-mentioned embodiments, but it is possible for those skilled in the art to modify the technical solutions described in the above-mentioned embodiments or to make equivalent substitutions for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a pressure pipeline flange joint, includes first pipeline (1) and second pipeline (2), the one end that first pipeline (1) and second pipeline (2) are close to all the rigid coupling has flange joint (3), wherein two be provided with sealing member (5) between flange joint (3), sealing member (5) are including setting up first sealed pad (6) between two flange joint (3), first sealed pad (6) extrados is fixed with integrative third sealed pad (8), one side that third sealed pad (8) are close to first sealed pad (6) is laminated with two flange joint (3) extrados, the intrados rigid coupling of first sealed pad (6) has integrative second sealed pad (7), one side that second sealed pad (7) are close to first sealed pad (6) is laminated with intrados of two flange joints (3).

2. A flanged joint for pressure pipes according to claim 1, characterized in that the side of the second sealing pad (7) facing away from the first sealing pad (6) is provided with an arcuate surface.

3. The flange joint for pressure pipelines according to claim 2, wherein grooves (9) are formed in the inner walls of the first pipeline (1) and the second pipeline (2) corresponding to the flange joint (3), and one side, close to the first sealing gasket (6), of the second sealing gasket (7) is matched with the inner surface of the grooves (9).

4. A pressure pipe flange joint according to claim 1, characterized in that a fastener (4) is arranged between two of the flange joints (3).

5. A flanged joint for pressure pipes according to claim 4, characterized in that the fastening element (4) is a bolt.