CN213420281U

CN213420281U - Corrosion-resistant high-sealing expansion joint

Info

Publication number: CN213420281U
Application number: CN202022083786.1U
Authority: CN
Inventors: 黄锐
Original assignee: Jiangsu Baoxinlai Pipeline Complete Equipment Co ltd
Current assignee: Jiangsu Baoxinlai Pipeline Complete Equipment Co ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2021-06-11
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a corrosion-resistant high sealed expansion joint relates to pipe connection technical field. The utility model comprises a corrugated pipe, wherein an outlet flange and an inlet flange are respectively and fixedly arranged at the two ends of the corrugated pipe; one end of the inlet flange close to the corrugated pipe is fixedly connected with a telescopic seat; one end of the outlet flange close to the corrugated pipe is fixedly connected with a sleeve; the telescopic seat is connected with the sleeve in a sliding way; a sealing ring is sleeved in the telescopic seat; a spring is sleeved in the telescopic seat and at one end of the sealing ring close to the inlet flange. The utility model provides an expansion joint, when whole pipeline is receiving cold or heat altered shape, the pipeline can extend or shorten, can give certain pressure to the import flange and the outlet flange of expansion joint, will do relative motion or reverse motion between flexible seat and the sleeve pipe to unload power or compensation to the pipeline, cause the damage when avoiding the pipeline to receive cold or heat altered shape.

Description

Corrosion-resistant high-sealing expansion joint

Technical Field

The utility model belongs to the technical field of the pipe connection, especially, relate to a corrosion-resistant high sealed expansion joint.

Background

The expansion joint has excellent performance and compact structure and is widely applied to the fields of chemical industry, metallurgy and the like, because the expansion joint can be directly contacted with fluid, the sealing property of the expansion joint needs to be considered under the condition that the expansion joint is deformed, and the conventional expansion joint often causes untight internal sealing due to corrosion and needs to be frequently checked and replaced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a corrosion-resistant high sealed expansion joint establishes the sleeve pipe through the flexible seat cover of installation in the bellows, has solved current expansion joint can be direct and fluid contact corrosion and lead to the problem that the interior seal need often inspect and change not tight.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a corrosion-resistant high-sealing expansion joint, which comprises a corrugated pipe, wherein an outlet flange and an inlet flange are respectively and fixedly arranged at two ends of the corrugated pipe; one end of the inlet flange, which is close to the corrugated pipe, is fixedly connected with a telescopic seat; one end of the outlet flange close to the corrugated pipe is fixedly connected with a sleeve; the telescopic seat is connected with the sleeve in a sliding manner; a sealing ring is sleeved in the telescopic seat; and a spring is sleeved in the telescopic seat and at one end of the sealing ring close to the inlet flange.

Furthermore, first fixing holes are formed in the circumferential array of the surface of the outlet flange; and second fixing holes are formed in the circumferential array on the surface of the inlet flange.

Further, the telescoping seat comprises a bottom plate; an outer pipe is fixedly arranged on one surface of the bottom plate; the outer tube is sleeved with an inner tube.

Furthermore, a vent pipe is communicated with one end part of the outer wall of the outer pipe, which is close to the inlet flange.

Furthermore, one end of the sealing ring close to the outer pipe is fixedly provided with an outer sealing cushion; one end of the sealing ring close to the inner pipe is fixedly provided with an inner sealing cushion; and one end of the sealing ring close to the sleeve is fixedly provided with a vibration reduction gasket.

Furthermore, one end part of the peripheral side surface of the corrugated pipe, which is close to the inlet flange, is provided with a vent hole; the vent hole is communicated with the vent pipe.

Furthermore, an arc-shaped notch is fixedly formed in one end, close to the outlet flange, of the sleeve.

The utility model discloses following beneficial effect has:

the utility model provides an expansion joint, when whole pipeline is receiving cold or heat altered shape, the pipeline can extend or shorten, can give certain pressure to the import flange and the outlet flange of expansion joint, because the flexible seat of one end fixedly connected with that is close to in the bellows of import flange, the one end fixedly connected with sleeve pipe that is close to in the bellows of outlet flange, sliding connection between flexible seat and the sleeve pipe, so will be relative motion or reverse motion between flexible seat and the sleeve pipe, thereby unload power or compensation to the pipeline, cause the damage when avoiding the pipeline to receive cold or heat altered shape.

The utility model discloses be provided with the sealing ring and pass through external seal cushion and interior seal cushion, can prevent the liquid outflow contact bellows through the expansion joint, liquid corrodes the bellows and leads to the internal seal not tight, has avoided needs frequent inspection and change expansion joint.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a corrosion-resistant high-sealing expansion joint of the present invention;

FIG. 2 is a transverse sectional view of the corrosion-resistant high-sealing expansion joint of the present invention;

FIG. 3 is a schematic structural view of the retractable seat;

FIG. 4 is a schematic structural view of a seal ring;

FIG. 5 is a schematic structural view of the bushing;

in the drawings, the components represented by the respective reference numerals are listed below:

1-corrugated pipe, 2-outlet flange, 3-inlet flange, 4-telescopic seat, 5-sealing ring, 6-spring, 7-sleeve, 101-vent hole, 201-first fixing hole, 301-second fixing hole, 401-bottom plate, 402-outer pipe, 403-inner pipe, 404-vent pipe, 501-outer sealing cushion, 502-inner sealing cushion, 503-vibration damping gasket and 701-arc-shaped notch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "up", "down", "top", "middle", "inner", and the like indicate positional or orientational relationships and are merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-5, the utility model relates to a corrosion-resistant high-sealing expansion joint, which comprises a corrugated pipe 1, wherein an outlet flange 2 and an inlet flange 3 are respectively and fixedly arranged at two ends of the corrugated pipe 1;

one end of the inlet flange 3 close to the corrugated pipe 1 is fixedly connected with a telescopic seat 4; one end of the outlet flange 2 close to the corrugated pipe is fixedly connected with a sleeve 7; the telescopic seat 4 is connected with the sleeve 7 in a sliding way;

a sealing ring 5 is sleeved in the telescopic seat 4; a spring 6 is sleeved in the telescopic seat 4 and at one end of the sealing ring 5 close to the inlet flange 3.

As shown in fig. 1, the outlet flange 2 is provided with a circumferential array of first fixing holes 201 on the surface; the surface of the inlet flange 3 is circumferentially provided with a second fixing hole 301 in an array.

Wherein, as shown in fig. 3, the telescopic base 4 comprises a bottom plate 401; an outer tube 402 is fixedly installed on one surface of the bottom plate 401, and an inner tube 403 is sleeved in the outer tube 402.

As shown in fig. 3, an end of the outer wall of the outer tube 402 near the inlet flange is connected to a vent pipe 404, through which the negative pressure in the telescopic seat 4 can be discharged.

As shown in fig. 4, an outer sealing cushion 501 is fixedly mounted at one end of the sealing ring 5 close to the outer pipe 402; an inner sealing cushion 502 is fixedly arranged at one end of the sealing ring 5 close to the inner pipe 403, the inner sealing cushion and the outer sealing cushion can prevent liquid passing through the expansion joint from flowing out to contact the corrugated pipe 1, the liquid corrodes the corrugated pipe 1 to cause untight internal sealing, and the expansion joint is prevented from being frequently checked and replaced; the end of the sealing ring 5 close to the sleeve 7 is fixedly provided with a damping gasket 503.

As shown in fig. 1 and 3, a vent hole 101 is formed on one end of the peripheral side surface of the corrugated pipe 1 near the inlet flange 3; the vent hole 101 communicates with a vent pipe 404.

Wherein as shown in fig. 4, the fixed arc notch 701 that is equipped with of one end that the sleeve pipe 7 is close to outlet flange 3 can make the liquid in the expansion joint pass through fast through arc notch 701, also avoids the corner department to pile up the residue in the liquid simultaneously and piles up, prevents that the expansion joint from corroding.

One specific application of this embodiment is:

when the utility model is used, the outlet flange 2 and the inlet flange 3 are respectively fixed on two sides of the pipeline by nuts through the first fixing hole 201 and the second fixing hole 301, because the outside of the pipeline is in a cut-off state, a certain temperature difference can appear outside the pipeline, under the condition of thermal expansion and cold contraction, the pipeline can be extended or shortened, a certain pressure can be given to the outlet flange 2 and the inlet flange 3 of the expansion joint, so that the sleeve 7 and the expansion seat 4 move oppositely or reversely, one end of the sleeve 7 sleeved with the expansion seat 4 is jointed on one surface of the sealing ring 5, the sealing ring 5 is pushed to move when the sleeve 7 moves, the spring 6 can reset the sealing ring 5, the outer sealing cushion 501 and the inner sealing cushion 502 are fixedly arranged on the surface of the sealing ring 5, the liquid flowing out through the expansion joint can be prevented from contacting the corrugated pipe 1, the corrugated pipe 1 is corroded by the liquid, and the inner sealing is not tight, the expansion joint is prevented from being checked and replaced frequently, negative pressure can be generated in the telescopic seat 4 when the sealing ring 5 moves back and forth, and the negative pressure can be discharged out of the expansion joint through the vent pipe 404.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments 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 invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The corrosion-resistant high-sealing expansion joint comprises a corrugated pipe (1), wherein an outlet flange (2) and an inlet flange (3) are fixedly mounted at two ends of the corrugated pipe (1) respectively;

the method is characterized in that: one end of the inlet flange (3) close to the corrugated pipe (1) is fixedly connected with a telescopic seat (4); one end of the outlet flange (2) close to the corrugated pipe is fixedly connected with a sleeve (7); the telescopic seat (4) is connected with the sleeve (7) in a sliding manner;

a sealing ring (5) is sleeved in the telescopic seat (4); a spring (6) is sleeved in the telescopic seat (4) and at one end, close to the inlet flange (3), of the sealing ring (5).

2. The corrosion-resistant high-sealing expansion joint according to claim 1, wherein the outlet flange (2) is provided with a circumferential array of first fixing holes (201) on the surface; and second fixing holes (301) are formed in the circumferential array on the surface of the inlet flange (3).

3. The corrosion-resistant highly sealed expansion joint according to claim 1, wherein the telescopic seat (4) comprises a bottom plate (401); an outer pipe (402) is fixedly arranged on one surface of the bottom plate (401); an inner pipe (403) is sleeved in the outer pipe (402).

4. The corrosion-resistant high-sealing expansion joint according to claim 3, wherein an end of the outer wall of the outer pipe (402) near the inlet flange (3) is communicated with a vent pipe (404).

5. The corrosion-resistant high-sealing expansion joint according to claim 4, wherein an outer sealing cushion (501) is fixedly arranged at one end of the sealing ring (5) close to the outer pipe (402); one end of the sealing ring (5) close to the inner pipe (403) is fixedly provided with an inner sealing cushion (502); and a damping gasket (503) is fixedly arranged at one end of the sealing ring (5) close to the sleeve (7).

6. The corrosion-resistant high-sealing expansion joint according to claim 4, wherein a vent hole (101) is formed in one end of the peripheral side surface of the corrugated pipe (1) close to the inlet flange (3); the vent hole (101) is communicated with a vent pipe (404).

7. The corrosion-resistant high-sealing expansion joint according to claim 4, wherein an arc-shaped notch (701) is fixedly arranged at one end of the sleeve (7) close to the outlet flange (2).