CN219317892U

CN219317892U - Hydraulic self-tightening sealing flange connection structure

Info

Publication number: CN219317892U
Application number: CN202320889507.1U
Authority: CN
Inventors: 邱莎莎
Original assignee: Shandong Sanwang Fluid Precision Technology Co ltd
Current assignee: Shandong Sanwang Fluid Precision Technology Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-07-07
Anticipated expiration: 2033-04-20

Abstract

The utility model discloses a hydraulic self-tightening sealing flange connection structure, and relates to the technical field of flange connection structures. The utility model comprises a hydraulic self-tightening sealing flange connection structure, which comprises an upper flange and a lower flange, wherein a locking piece is arranged between the upper flange and the lower flange, a fixing ring is fixed on the inner surface of the upper flange, a groove opening is formed in the bottom surface of the fixing ring, a sealing ring is fixed on the inner surface of the lower flange, a plug ring matched with the groove opening is fixed on the sealing ring, a sealing gasket is arranged between the plug ring and the groove opening, the sealing gasket comprises a seamless pipe, filling liquid wrapped on the surface of the seamless pipe and an outer skin layer filled in the seamless pipe, one surface of the seamless pipe is a plane, the other surface of the seamless pipe is a concave surface, the groove opening is matched with the sealing gasket in size, the groove opening is closely contacted with the plane of the sealing gasket in size, and the plug ring is matched with the concave surface of the sealing gasket in plug connection. The utility model improves the filling effect of gaps when the gasket is filled.

Description

Hydraulic self-tightening sealing flange connection structure

Technical Field

The utility model belongs to the technical field of flange connection structures, and particularly relates to a hydraulic self-tightening sealing flange connection structure.

Background

Pressure vessel flange and pipe flange connections can be divided into three categories in terms of structure and sealing principle: forced flange connection sealing, semi-self-tightening sealing and self-tightening sealing. All three seals rely on the relatively high pressure applied by the bolts to the gasket to form the initial seal. Under the working condition, the latter two rely on medium pressure to increase gasket sealing specific pressure, and the gasket in the current hydraulic self-tightening sealing structure has the shortcoming when using, and the gasket is generally the cyclic pillar form, and when the gasket fills, the effect of filling to the gap is limited, and there is the improvement space in the effect of filling, therefore, proposes a hydraulic self-tightening sealing flange connection structure, solves above-mentioned problem.

Disclosure of Invention

The utility model aims to provide a hydraulic self-tightening sealing flange connection structure, which solves the problems that gaskets in the existing hydraulic self-tightening sealing structure have defects in use, are generally in a ring column shape, have limited filling effect on gaps when the gaskets are filled, and have improvement space in the filling effect.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a hydraulic self-tightening sealing flange connection structure which comprises an upper flange and a lower flange, wherein a locking piece is arranged between the upper flange and the lower flange, a fixing ring is fixed on the inner surface of the upper flange, a groove opening is formed in the bottom surface of the fixing ring, a sealing ring is fixed on the inner surface of the lower flange, a plug-in ring matched with the groove opening is fixed on the sealing ring, a sealing gasket is arranged between the plug-in ring and the groove opening, the sealing gasket comprises a seamless pipe, filling liquid wrapped on the surface of the seamless pipe and an outer skin layer filled in the seamless pipe, one surface of the seamless pipe is a plane, and the other surface of the seamless pipe is a concave surface.

The groove opening is in close contact with the sealing gasket in a plane, the groove opening is in plug fit with the sealing ring, the plug ring is in plug fit with the sealing gasket in a concave surface of the plug ring and the sealing gasket, and the sealing gasket is arranged in the groove opening.

The locking piece comprises a bolt and a nut, the upper flange and the lower flange are locked through the locking piece, the upper flange and the lower flange are sealed through the sealing gasket by arranging the locking piece, the sealing gasket is arranged, after the upper flange and the lower flange are fixed through the locking piece, filling liquid is added into the seamless pipe to expand the seamless pipe and the outer skin layer, so that gaps among the fixed ring, the sealing ring and the inserting ring are filled, and the sealing performance is further improved.

The surface of the seamless pipe is provided with a reinforcing ring, a plug is arranged in the reinforcing ring, filling liquid is injected into the seamless pipe through the reinforcing ring and the plug, the plug is screwed after the filling liquid is filled, and the head of the plug is welded with the seamless pipe, so that leakage is prevented.

The utility model has the following beneficial effects:

according to the utility model, the locking piece and the sealing gasket are arranged, after the upper flange and the lower flange are fixed through the locking piece, filling liquid is added into the seamless pipe to expand the seamless pipe and the outer skin layer, so that gaps among the fixing ring, the sealing ring and the inserting ring are filled, and the tightness is further improved; by arranging the sealing gasket in the groove opening, after the seamless pipe and the outer skin layer are expanded, gaps among the fixing ring, the sealing ring and the inserting ring are filled; by arranging the reinforcing ring and the screwed plug, filling liquid is injected into the seamless pipe, the screwed plug is screwed after filling, and the head of the screwed plug is welded with the seamless pipe, so that leakage is prevented.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall schematic diagram of a hydraulic self-sealing flange connection of the present utility model;

FIG. 2 is a schematic side view of a hydraulic self-sealing flange connection according to the present utility model;

FIG. 3 is a schematic view in section A-A of FIG. 2;

FIG. 4 is an enlarged partial view of portion A of FIG. 3;

fig. 5 is a partial enlarged view of a portion B of fig. 3.

In the drawings, the list of components represented by the various numbers is as follows:

1. an upper flange; 2. a lower flange; 3. a sealing gasket; 4. a fixing ring; 5. a groove opening; 6. a seal ring; 7. a plug ring; 8. a seamless tube; 9. filling liquid; 10. an outer skin layer; 11. a reinforcing ring; 12. plugging; 13. a bolt; 14. a screw cap; 15. and (5) locking the piece.

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.

In the description of the present utility model, it should be understood that the terms "upper," "middle," "outer," "inner," and the like indicate an orientation or a positional relationship, and are merely for convenience of describing the present utility model and simplifying the description, but do not indicate or imply 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 limiting the present utility model.

Referring to fig. 1-5, the utility model discloses a hydraulic self-tightening sealing flange connection structure, which comprises an upper flange 1 and a lower flange 2, wherein a locking piece 15 is arranged between the upper flange 1 and the lower flange 2, the inner surface of the upper flange 1 is fixedly provided with a fixed ring 4, the bottom surface of the fixed ring 4 is provided with a groove opening 5, the inner surface of the lower flange 2 is fixedly provided with a sealing ring 6, a plug ring 7 matched with the groove opening 5 is fixedly arranged on the sealing ring 6, a sealing gasket 3 is arranged between the plug ring 7 and the groove opening 5, the sealing gasket 3 comprises a seamless pipe 8, filling liquid 9 wrapped on the surface of the seamless pipe 8 and an outer skin layer 10 filled in the seamless pipe 8, one surface of the seamless pipe 8 is a plane, the other surface of the seamless pipe 8 is a concave surface, and the seamless pipe 8 and the outer skin layer 10 are made of materials which can be expanded in the prior art.

The groove opening 5 is matched with the size of the sealing gasket 3, the groove opening 5 is in close contact with the plane of the sealing gasket 3, the groove opening 5 is matched with the size of the sealing ring 6 in a plugging mode, the plugging ring 7 is matched with the size of the sealing gasket 3 in a plugging mode, the plugging ring 7 is matched with the concave surface of the sealing gasket 3 in a plugging mode, the sealing gasket 3 is arranged in the groove opening 5, and after the seamless pipe 8 and the outer skin layer 10 are expanded, gaps among the fixing ring 4, the sealing ring 6 and the plugging ring 7 are filled.

The locking piece 15 comprises a bolt 13 and a nut 14, the upper flange 1 and the lower flange 2 are locked through the locking piece 15, the upper flange 1 and the lower flange 2 are sealed through the sealing gasket 3 by arranging the locking piece 15, the sealing gasket 3 is arranged, after the upper flange 1 and the lower flange 2 are fixed through the locking piece 15, the filling liquid 9 is added into the seamless pipe 8 to expand the seamless pipe 8 and the outer skin layer 10, so that gaps among the fixing ring 4, the sealing ring 6 and the plug ring 7 are filled, and the tightness is further improved.

The surface of the seamless pipe 8 is provided with a reinforcing ring 11, a screwed plug 12 is arranged in the reinforcing ring 11, filling liquid 9 is injected into the seamless pipe 8 by arranging the reinforcing ring 11 and the screwed plug 12, and the head of the screwed plug 12 is welded with the seamless pipe 8 so as to prevent leakage.

As shown in fig. 1 to 5, the present embodiment is a method for using a hydraulic self-tightening sealing flange connection structure: when the upper flange 1 and the lower flange 2 are installed, firstly, the sealing gasket 3 is placed in the groove opening 5, then the inserting ring 7 on the lower flange 2 is inserted into the concave surface of the sealing gasket 3, meanwhile, the inserting ring 7 is inserted into the groove opening 5, then the upper flange 1 and the lower flange 2 are fixed through the locking piece 15, and when the filling liquid 9 is added into the seamless pipe 8, the seamless pipe 8 and the outer skin layer 10 are expanded, so that gaps among the fixing ring 4, the sealing ring 6 and the inserting ring 7 are filled, and the tightness is further improved.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a hydraulic pressure self-tightening seal flange connection structure, includes flange (1), lower flange (2), its characterized in that: be provided with locking piece (15) between last flange (1) and lower flange (2), go up flange (1) internal surface fixed has solid fixed ring (4), recess mouth (5) have been seted up to solid fixed ring (4) bottom surface, lower flange (2) internal surface fixed has sealing ring (6), be fixed with on sealing ring (6) with grafting ring (7) of recess mouth (5) looks adaptation, be provided with sealed pad (3) between grafting ring (7) and recess mouth (5), sealed pad (3) include seamless pipe (8) and parcel packing liquid (9) on seamless pipe (8) surface and pack skin (10) in seamless pipe (8), one surface of seamless pipe (8) is the plane, another surface of seamless pipe (8) is the concave surface.

2. The hydraulic self-tightening sealing flange connection structure according to claim 1, wherein the groove opening (5) and the sealing gasket (3) are sized to be compatible, and the groove opening (5) and the sealing gasket (3) are in close contact in a plane.

3. The hydraulic self-tightening sealing flange connection structure according to claim 2, wherein the plugging ring (7) and the sealing gasket (3) are in size adaptation, and the plugging ring (7) and the sealing gasket (3) are in concave plugging fit.

4. A hydraulic self-tightening sealing flange connection structure according to claim 3, characterized in that the size of the groove opening (5) is adapted to that of the sealing ring (6), and the groove opening (5) is in plug-in fit with the sealing ring (6).

5. The hydraulic self-tightening sealing flange connection structure according to claim 4, wherein the locking member (15) comprises a bolt (13) and a nut (14), and the upper flange (1) and the lower flange (2) are locked by the locking member (15).

6. The hydraulic self-tightening sealing flange connection structure according to claim 1, wherein the upper flange (1) and the lower flange (2) are sealed by a sealing gasket (3).

7. The hydraulic self-tightening sealing flange connection structure according to claim 1, wherein a reinforcing ring (11) is arranged on the surface of the seamless pipe (8), and a plug (12) is arranged in the reinforcing ring (11).