Dual-seal flange and pipeline plugging assembly

Abstract

The utility model discloses a double-seal flange and pipeline plugging assembly, which comprises a flange plate and a cylinder, the cylinder is positioned on a sealing surface of the flange plate, the sealing surface is connected with a sealing gasket, and a sealing ring is sleeved on the cylinder. During installation, the sealing gasket penetrates upwards from the lower end of the cylinder until the sealing gasket is in contact with the sealing face, then the sealing ring is arranged on the cylinder in a sleeving mode, then the cylinder is arranged in the pipeline in a penetrating mode, at the moment, the sealing gasket is located between the sealing face and the outer end face of the pipeline, and the sealing ring is located between the outer circumferential face of the cylinder and the inner circumferential face of the pipeline. Wherein the first sealing effect can be achieved through the sealing ring, the second sealing effect can be achieved through the sealing gasket, and compared with the mode that an existing flange is sealed only through the sealing gasket, the sealing effect can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, in particular to a double sealing flange and a pipeline blocking component. Background Art

[0002] At the end of the diesel engine pipeline, a blind flange is often required to seal the pipeline. However, when the pipeline pressure is too high or the sealing gasket is defective, liquid splashing accidents are likely to occur. In the worst case, the outer surface of the diesel engine will be contaminated by liquid. In the worst case, liquid leakage will cause damage to the diesel engine, resulting in personal injury.

[0003] Therefore, how to improve the sealing effect of the pipeline end is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to provide a double sealing flange and a pipeline plugging assembly, which can effectively improve the sealing performance of the flange.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A double sealing flange comprises: a flange plate and a cylinder, wherein the cylinder is located on the sealing surface of the flange plate, a sealing gasket is connected to the sealing surface, a sealing ring is sleeved on the cylinder, the cylinder is used to be passed through the interior of a pipeline, the sealing gasket is located between the sealing surface and the outer end surface of the pipeline, and the sealing ring is located between the outer circumferential surface of the cylinder and the inner circumferential surface of the pipeline.

[0007] In some embodiments, an annular groove is provided on the outer circumference of the cylinder, and the sealing ring is placed in the annular groove.

[0008] In some embodiments, an annular protrusion is provided on the outer periphery of the cylinder, and the annular groove is provided on the outer peripheral surface of the annular protrusion.

[0009] In some embodiments, a plurality of annular grooves distributed along the axial direction are provided on the outer circumference of the cylinder, and a sealing ring is provided in each of the annular grooves.

[0010] In some embodiments, the flange plate, the sealing gasket and the pipeline are all provided with connection holes for fasteners to pass through.

[0011] In some embodiments, the flange plate is a diamond-shaped plate with rounded corners at four corners, and the sealing gasket is a diamond-shaped sealing gasket with rounded corners at four corners.

[0012] In some embodiments, the sealing ring is an O-ring.

[0013] In some embodiments, the inner hole of the barrel is provided with a counterbore away from one end of the flange plate, and the counterbore is coaxially arranged with the inner hole.

[0014] In some embodiments, the ratio of the thickness of the flange plate to the length of the barrel is 1:5.

[0015] A pipeline plugging assembly comprises the double-seal flange of any one of the above, and further comprises a pipeline and a fastener for connecting the pipeline and the double-seal flange.

[0016] Compared with the prior art, the above technical solution has the following advantages:

[0017] The double-seal flange and the pipeline plugging assembly provided by the utility model comprise a flange plate and a barrel, the barrel is located on a sealing surface of the flange plate, a sealing gasket is connected at the sealing surface, and a sealing ring is sleeved on the barrel. During installation, the sealing gasket is first threaded from the lower end of the barrel upwards until the sealing gasket is in contact with the sealing surface, then the sealing ring is sleeved on the barrel, and subsequently the barrel is threaded inside the pipeline, at this time, the sealing gasket is located between the sealing surface and the outer end surface of the pipeline, and the sealing ring is located between the outer circumferential surface of the barrel and the inner circumferential surface of the pipeline. The sealing ring can play a first sealing role, and the sealing gasket can play a second sealing role, and compared with the prior art in which only the sealing gasket is used for sealing, the sealing effect can be effectively improved. In addition, the barrel is used as the structure design of the flange threaded inside the pipeline, which can play a weight-reducing role on the one hand, and when liquid enters the barrel, pressure can be generated on the side wall of the barrel, so that the combination effect between the outer circumferential surface of the barrel and the inner circumferential surface of the pipeline is improved, and the sealing effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0019] Figure 1 It is a sectional view of a double-seal flange provided in a specific embodiment of the utility model;

[0020] Figure 2 It is a bottom view of a double-seal flange provided in a specific embodiment of the utility model;

[0021] Figure 3 It is a structural schematic view when the sealing gasket and the sealing ring are arranged on the flange;

[0022] Figure 4 A cross-sectional view of a double sealing flange provided in another specific embodiment of the present invention;

[0023] Figure 5 A cross-sectional view of a double sealing flange provided in another specific embodiment of the present invention with an expanded hole provided at the bottom.

[0024] The reference numerals are as follows:

[0025] 10- flange plate, 11- connection hole;

[0026] 20-cylinder, 21-annular groove, 22-annular protrusion, 23-reaming;

[0027] 30-sealing gasket;

[0028] 40-Sealing ring. DETAILED DESCRIPTION

[0029] 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.

[0030] Please refer to Figures 1 to 5 .

[0031] The double sealing flange provided by the embodiment of the present invention includes: a flange plate 10 and a cylinder 20. The flange plate 10 and the cylinder 20 can be an integrally formed structure. The ratio of the thickness of the flange plate 10 to the length of the cylinder 20 is preferably 1:5. The cylinder 20 is located on the sealing surface of the flange plate 10. Figure 1As shown, the lower surface of the flange plate 10 is a sealing surface, and the cylinder 20 is located at the lower end of the flange plate 10. A sealing gasket 30 is connected to the sealing surface. A through hole is provided in the middle of the sealing gasket 30, and a sealing ring is sleeved on the cylinder 20. During installation, the sealing gasket 30 is first passed upward from the lower end of the cylinder 20 until it contacts the sealing surface. The sealing ring is then sleeved on the cylinder 20, and the cylinder 20 is then passed into the interior of the pipeline. At this time, the sealing gasket 30 is located between the sealing surface and the outer end face of the pipeline, and the sealing ring is located between the outer circumference of the cylinder 20 and the inner circumference of the pipeline. Finally, the flange plate 10 is fixed to the pipeline. The sealing ring can play a first sealing role, and the sealing gasket 30 can play a second sealing role. Compared with the existing flange sealing method of only using the sealing gasket 30, this can effectively improve the sealing effect. In addition, by designing the structure in which the flange is passed through the pipeline as a cylinder 20, on the one hand, it can play a role in weight reduction, and on the other hand, when the liquid enters the cylinder 20, it can generate pressure on the side wall of the cylinder 20, thereby improving the bonding effect between the outer peripheral surface of the cylinder 20 and the inner peripheral surface of the pipeline, thereby improving the sealing effect.

[0032] In some embodiments, as Figure 4 As shown, an annular groove 21 is provided on the outer periphery of the cylinder 20, and the sealing ring is placed in the annular groove 21, wherein the annular groove 21 is preferably provided on the outer periphery of the cylinder 20 at one end away from the flange plate 10. The annular groove 21 can improve the stability of the sealing ring installed on the cylinder 20, wherein the sealing ring is preferably an O-ring, and the cross-section of the annular groove 21 is preferably rectangular or arc-shaped.

[0033] In some embodiments, as Figure 1 and Figure 3 As shown, an annular protrusion 22 is provided on the outer periphery of the cylinder 20, and an annular groove 21 is provided on the outer peripheral surface of the annular protrusion 22. The annular protrusion 22 can be integrally formed on the outer periphery of the cylinder 20. By arranging the annular groove 21 on the annular protrusion 22, the problem of directly arranging the annular groove 21 on the cylinder 20 and weakening the strength of the cylinder 20 can be avoided.

[0034] In some embodiments, the outer periphery of the cylinder 20 is provided with a plurality of annular grooves 21 distributed along the axial direction, and each annular groove 21 is provided with a sealing ring. The sealing effect of the flange can be further improved by multiple sealing rings, and the spacing between the multiple annular grooves 21 can be the same, or the spacing can be arranged in a manner that gradually increases from bottom to top.

[0035] In some embodiments, the flange plate 10, the sealing gasket 30, and the pipeline are all provided with connection holes 11 for fasteners to pass through. The fasteners may be screws. When the flange plate 10, the sealing gasket 30, and the pipeline are circular, multiple screws may be evenly distributed along the circumference. When the flange plate 10, the sealing gasket 30, and the pipeline are polygonal, one screw may be provided at each corner.

[0036] In some embodiments, as Figure 2 As shown, the flange plate 10 is a diamond-shaped plate with rounded corners at the four corners, and the sealing gasket 30 is a diamond-shaped sealing gasket 30 with rounded corners at the four corners. Connection holes 11 can be set at two corners on the long diagonal line of the diamond plate and the diamond-shaped sealing gasket 30.

[0037] In some embodiments, a reamer 23 is provided at one end of the inner hole of the cylinder 20 away from the flange plate 10, and the reamer 23 is coaxially arranged with the inner hole, such as Figure 5 As shown, the inner wall surface of the expansion hole 23 is a conical structure. The liquid can generate a radial component force on the conical surface, which is conducive to pressing the cylinder 20 against the inner wall of the pipeline, and then pressing the sealing ring between the cylinder 20 and the pipeline, thereby preventing the liquid from flowing out from between the cylinder 20 and the pipeline.

[0038] The present invention also provides a pipeline sealing assembly comprising the double sealing flange provided in any of the aforementioned embodiments, a pipeline, and a fastener for connecting the pipeline to the double sealing flange. The beneficial effects of the pipeline sealing assembly can be seen in the double sealing flange of the aforementioned embodiments and will not be further elaborated here.

[0039] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0040] The above describes in detail the double-sealing flange and pipeline plugging assembly provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A double sealing flange, characterized in that: include: A flange plate (10) and a cylinder (20), wherein the cylinder (20) is located on a sealing surface of the flange plate (10), a sealing gasket (30) is connected to the sealing surface, a sealing ring (40) is sleeved on the cylinder (20), the cylinder (20) is used to be inserted into the interior of a pipeline, the sealing gasket (30) is located between the sealing surface and the outer end surface of the pipeline, and the sealing ring (40) is located between the outer peripheral surface of the cylinder (20) and the inner peripheral surface of the pipeline.

2. The double sealing flange according to claim 1, characterized in that: An annular groove (21) is provided on the outer periphery of the cylinder (20), and the sealing ring (40) is placed in the annular groove (21).

3. The double sealing flange according to claim 2, characterized in that: An annular protrusion (22) is provided on the outer periphery of the cylinder (20), and the annular groove (21) is provided on the outer peripheral surface of the annular protrusion (22).

4. The double sealing flange according to claim 1, characterized in that: The outer periphery of the cylinder (20) is provided with a plurality of annular grooves (21) distributed along the axial direction, and each annular groove (21) is provided with a sealing ring (40).

5. The double sealing flange according to claim 4, characterized in that: The flange plate (10), the sealing gasket (30) and the pipeline are all provided with connection holes (11) for fasteners to pass through.

6. The double sealing flange according to claim 5, characterized in that: The flange plate (10) is a diamond-shaped plate, and the four corners of the diamond-shaped plate are provided with rounded corners. The sealing gasket (30) is a diamond-shaped sealing gasket (30), and the four corners of the diamond-shaped sealing gasket (30) are provided with rounded corners.

7. The double sealing flange according to claim 1, characterized in that: The sealing ring (40) is an O-type sealing ring (40).

8. The double sealing flange according to claim 1, characterized in that: An end of the inner hole of the cylinder (20) away from the flange plate (10) is provided with a reamer (23), and the reamer (23) is coaxially arranged with the inner hole.

9. The double sealing flange according to claim 1, characterized in that: The ratio of the thickness of the flange plate (10) to the length of the cylinder (20) is 1:

5.

10. A pipeline plugging assembly, characterized in that: The double sealing flange according to any one of claims 1 to 9 further comprises a pipeline and a fastener, wherein the fastener is used to connect the pipeline and the double sealing flange.

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