CN214579641U - Sealing assembly for rubber expansion joint - Google Patents

Abstract

The utility model discloses a rubber expansion joint uses seal assembly, including end pipe and bellows, the fixed middle part that sets up at the end pipe of bellows, the outside fixedly connected with flange at the both ends of end pipe, the edge of flange is provided with a plurality of screw holes, the inside of screw hole is provided with fastening screw, fastening screw's one end fixedly connected with fastening nut, one side laminating flange of fastening nut, fixedly connected with sealing ring on the inner wall of flange, the outside fixedly connected with of the both ends of end pipe connects the ring outward, the fixed locating pin that is provided with in both sides of external ring, the inside of external ring both sides is provided with the constant head tank that extends to the end pipe inner wall, locating pin fixed connection is in the inside of constant head tank, the fixed ring that is provided with in the inside of external ring both sides, the fixed slot has been seted up to one side of external ring, the inside that the fixed slot extends to inner ring one end, the inside fixedly connected with fixed pin of fixed slot. The sealing assembly for the rubber expansion joint has better sealing performance, and can avoid liquid or gas in a pipeline from leaking.

Description

Sealing assembly for rubber expansion joint

Technical Field

The utility model relates to a rubber expansion joint technical field specifically is a rubber expansion joint is with seal assembly.

Background

An expansion joint refers to a flexible element that effectively functions to compensate for axial deformation. For example, the expansion joint welded on the shell of the fixed tube-plate heat exchanger has large axial flexibility and easy deformation, can compensate the thermal expansion difference generated by the tube and the shell due to different wall temperatures, and reduces the axial load of the tube and the shell, thereby reducing the temperature difference stress of the tube, the tube plate and the shell and avoiding causing strength damage, instability damage and tube pull-out damage. The expansion joint has many kinds, and the common structures include a wave shape, a ring plate welding structure, a clamping shell type structure and the like, wherein the wave shape expansion joint is most widely applied, the ring plate welding expansion joint is only suitable for normal pressure or low pressure occasions, and the expansion joint is also called a compensator or an expansion joint in a habitual way. It is composed of bellows (an elastic element) and its working body, end pipe, support, flange and guide pipe. The expansion joint is a flexible structure provided on the vessel shell or pipe in order to compensate for additional stresses due to temperature differences and mechanical vibrations. The effective telescopic deformation of the working body corrugated pipe is utilized to absorb the dimensional change of pipelines, conduits, containers and the like caused by expansion and contraction due to heat and the like or compensate the axial, transverse and angular displacement of the pipelines, the conduits, the containers and the like. The compensator is arranged on the pipeline to compensate the thermal extension of the pipeline, thereby reducing the stress of the pipeline wall and the acting force acting on the valve member or the bracket structure.

As the expansion joint is an elastic compensation element capable of freely stretching, the expansion joint has the advantages of reliable work, good performance, compact structure and the like, and is widely applied to chemical, metallurgical, nuclear and other departments. There are various forms of expansion joints used in containers, with U-shaped expansion joints being most widely used in terms of corrugated shapes, followed by omega-and C-shapes, etc.

At present, when the existing expansion joint is butted with other pipelines, the sealing performance of the joint of the expansion joint and the other pipelines needs to be ensured, if the sealing performance is poor, liquid or gas in the pipelines can be leaked, and if the expansion joint is a dangerous chemical raw material, the environment can be polluted or workers can be injured, so that the sealing assembly for the rubber expansion joint is improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model relates to a rubber expansion joint is with seal assembly, including end pipe and bellows, the fixed middle part that sets up at the end pipe of bellows, the outside fixedly connected with flange at the both ends of end pipe, the edge of flange is provided with a plurality of screw holes, the inside of screw hole is provided with fastening screw, fastening screw's one end fixedly connected with fastening nut, one side laminating flange of fastening nut, fixedly connected with sealing ring on the inner wall of flange, the outside fixedly connected with at the both ends of end pipe connects the ring outward, the fixed locating pin that is provided with in both sides of connecting the ring outward.

As a preferred technical scheme of the utility model, the inside of external ring both sides is provided with the constant head tank that extends to the end pipe inner wall, locating pin fixed connection is in the inside of constant head tank, the fixed inner ring that is provided with in inside of external ring both sides, the fixed slot has been seted up to one side of external ring, the fixed slot extends to the inside of inner ring one end, the inside fixedly connected with fixed pin of fixed slot, inner ring one end sets up in the inside of end pipe, just the solid fixed ring of one end fixedly connected with of inner ring.

As a preferred technical scheme of the utility model, the fixed collar that is provided with in solid fixed ring's inboard, the inboard fixed connection of collar has the sealed lantern ring in inclined plane, the both sides of the sealed lantern ring in inclined plane closely laminate on the inner wall of end pipe.

As a preferred technical scheme of the utility model, two the outer ring that connects is opposite direction setting in the outside of end pipe, just the inclined plane of the sealed lantern ring in inclined plane is towards the mouth of pipe direction at end pipe both ends.

As an optimal technical scheme of the utility model, the quantity of locating pin is the same with the quantity of constant head tank, the quantity of fixed pin is the same with the quantity of fixed slot.

As a preferred technical scheme of the utility model, the outer wall of the external pipeline of inboard laminating of sealing ring, and the fixed inboard that sets up at external pipeline of inclined plane seal cover ring.

As an optimal technical scheme of the utility model, the screw hole is along 360 even settings of the axle center point of flange.

The utility model has the advantages that: this kind of seal assembly for rubber expansion joint, fix external ring on the end pipe through locating pin and the constant head tank that sets up, then be in the same place inner ring and external ring are fixed through fixed pin and fixed slot, and the inboard of inner ring is provided with solid fixed ring again, gu fixed ring fixes the collar again, and then make the sealed lantern ring joint in the inboard of collar on the inclined plane, and then make the sealed lantern ring in the inclined plane fixable on the inner wall of end pipe, when the installation, make the sealed lantern ring in the inclined plane laminate on the inner wall of external pipeline, and make the outer wall department of the external pipeline of inner wall laminating of sealing ring, can accomplish sealedly, compare prior art, the seal assembly leakproofness of this expansion joint is better, can avoid liquid or the gaseous leakage in the pipeline.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a plan view of a seal assembly for a rubber expansion joint of the present invention;

FIG. 2 is a plan view of a flange of a sealing assembly for a rubber expansion joint according to the present invention;

fig. 3 is a cross-sectional view of an outer ring of the sealing assembly for a rubber expansion joint according to the present invention.

In the figure: 1. an end tube; 2. a bellows; 3. an external ring; 4. a flange; 5. fastening screws; 6. fastening a nut; 7. a fixing pin; 8. positioning pins; 9. a threaded hole; 10. a seal ring; 11. An inner ring; 12. a fixing ring; 13. fixing grooves; 14. positioning a groove; 15. a beveled sealing collar; 16. and (7) installing a ring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-3, the utility model relates to a rubber expansion joint seal assembly, including end pipe 1 and bellows 2, bellows 2 is fixed to be set up at the middle part of end pipe 1, the outside fixedly connected with flange 4 at the both ends of end pipe 1, flange 4 can make the connection between expansion joint and the external pipeline more firm, the edge of flange 4 is provided with a plurality of screw holes 9, the inside of screw hole 9 is provided with fastening screw 5, fastening screw 5's one end fixedly connected with fastening nut 6, one side laminating flange 4 of fastening nut 6, fixedly connected with sealing ring 10 on flange 4's the inner wall, the outside fixedly connected with of the both ends of end pipe 1 connects ring 3 outward, the fixed locating pin 8 that is provided with in both sides that connects ring 3 outward.

Wherein, the inside of 3 both sides of external ring is provided with constant head tank 14 that extends to end pipe 1 inner wall, 8 fixed connection of locating pin are in the inside of constant head tank 14, the fixed inner ring 11 that is provided with in inside of 3 both sides of external ring, fixed slot 13 has been seted up to one side of external ring 3, fixed slot 13 extends to the inside of inner ring 11 one end, the inside fixedly connected with fixed pin 7 of fixed slot 13, the one end setting of inner ring 11 is in the inside of end pipe 1, and the solid fixed ring 12 of the one end fixedly connected with of inner ring 11.

Wherein, the fixed collar 16 that is provided with in the inboard of solid fixed ring 12, collar 16 are used for fixed inclined plane sealing lantern ring 15, make inclined plane sealing lantern ring 15 can fix on the inner wall of end pipe 1, and the inboard fixed connection of collar 16 has inclined plane sealing lantern ring 15, and the both sides of inclined plane sealing lantern ring 15 closely laminate on the inner wall of end pipe 1, and inclined plane sealing lantern ring 15 and sealing ring 10 are rubber materials and make.

Wherein, two external rings 3 are opposite direction setting in the outside of end pipe 1, and the inclined plane of the sealed lantern ring 15 of inclined plane is towards the mouth of pipe direction at end pipe 1 both ends for external pipeline that needs the installation in end pipe 1 both ends seals.

The number of the positioning pins 8 is the same as that of the positioning grooves 14, and the number of the fixing pins 7 is the same as that of the fixing grooves 13.

Wherein, the outer wall of external pipeline of inboard laminating of sealing ring 10 for improve the leakproofness of expansion joint, and the fixed inboard that sets up at external pipeline of the sealed lantern ring 15 in inclined plane, be used for effectively sealing up the junction of expansion joint and external pipeline.

Wherein, the threaded holes 9 are evenly arranged along the axial center point of the flange 4 by 360 degrees.

Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a rubber expansion joint is with seal assembly, its characterized in that, includes end pipe (1) and bellows (2), bellows (2) are fixed to be set up at the middle part of end pipe (1), outside fixedly connected with flange (4) at the both ends of end pipe (1), the edge of flange (4) is provided with a plurality of screw holes (9), the inside of screw hole (9) is provided with fastening screw (5), the one end fixedly connected with fastening nut (6) of fastening screw (5), one side laminating flange (4) of fastening nut (6), fixedly connected with sealing ring (10) on the inner wall of flange (4), the outside fixedly connected with at the both ends of end pipe (1) connects ring (3) outward, the fixed locating pin (8) that is provided with in both sides of connecing ring (3) outward.

2. The sealing assembly for the rubber expansion joint according to claim 1, wherein the inner parts of the two sides of the external ring (3) are provided with positioning grooves (14) extending to the inner wall of the end pipe (1), the positioning pins (8) are fixedly connected inside the positioning grooves (14), the inner parts of the two sides of the external ring (3) are fixedly provided with inner rings (11), one side of the external ring (3) is provided with a fixing groove (13), the fixing groove (13) extends to the inner part of one end of the inner ring (11), the fixing pin (7) is fixedly connected inside the fixing groove (13), one end of the inner ring (11) is arranged inside the end pipe (1), and one end of the inner ring (11) is fixedly connected with a fixing ring (12).

3. A sealing assembly for a rubber expansion joint according to claim 2, characterized in that a mounting ring (16) is fixedly arranged on the inner side of the fixing ring (12), a bevel sealing collar (15) is fixedly connected to the inner side of the mounting ring (16), and two sides of the bevel sealing collar (15) are tightly attached to the inner wall of the end pipe (1).

4. A rubber expansion joint seal assembly according to claim 3, characterized in that the two external rings (3) are arranged in opposite directions outside the end pipe (1), and the inclined surface of the inclined surface sealing collar (15) faces the direction of the pipe orifice at the two ends of the end pipe (1).

5. A rubber expansion joint seal assembly according to claim 2, wherein the number of positioning pins (8) and positioning grooves (14) is the same, and the number of fixing pins (7) and fixing grooves (13) is the same.

6. A rubber expansion joint seal assembly according to claim 1, wherein the inner side of the seal ring (10) is attached to the outer wall of the outboard pipe, and the beveled seal collar (15) is fixedly arranged on the inner side of the outboard pipe.

7. A sealing assembly for a rubber expansion joint according to claim 1, characterized in that the threaded holes (9) are evenly arranged along 360 ° of the axial center point of the flange (4).

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