CN211779618U

CN211779618U - Novel thick wall expansion joint

Info

Publication number: CN211779618U
Application number: CN201922384997.6U
Authority: CN
Inventors: 王永珊
Original assignee: JIANGSU YONGCHANG EXPANSION JOINTS CO Ltd
Current assignee: JIANGSU YONGCHANG EXPANSION JOINTS CO Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-27
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a novel thick wall expansion joint, which comprises a corrugated pipe, wherein an inner thick pipe is arranged in the corrugated pipe, first flanges are arranged at the gaps between the two ends of the corrugated pipe and the inner thick pipe, an inner thin pipe is arranged in the inner thick pipe, the two ends of the inner thin pipe are outwards turned and respectively pressed on the two ends of the inner thick pipe, the two ends of the inner thick pipe are respectively sleeved with second flanges, the first flanges and the second flanges are fixedly connected through bolts, and the pipe walls at the two ends of the inner thick pipe are respectively provided with an installation port, the utility model discloses a closed air cavity is formed between the inner thick pipe and the inner thin pipe by arranging the inner thick pipe and the inner thin pipe which are sleeved in the corrugated pipe, when coal ash media are conveyed, the media extrude the pipe wall of the inner thin pipe, and the air cavity conveys the single high-strength air for uninterrupted single time, and the air flow can form the compensation effect for the extrusion force of the media, thereby generating, the deformation probability of the corrugated pipe is reduced, and the service life of the product is prolonged.

Description

Novel thick wall expansion joint

Technical Field

The utility model relates to an expansion joint technical field specifically is a novel thick wall expansion joint.

Background

In order to compensate additional stress caused by temperature difference and mechanical vibration, an expansion joint is arranged on a container shell or a pipeline and is of a flexible structure, a corrugated cavity of the corrugated expansion joint is formed by a thin-wall corrugated pipe, in the industries of steel, power plants and the like, fly ash, oil media and gas media are often conveyed in the pipeline, the media are formed by irregular polyhedral particles or have serious corrosivity or have larger pressure ratio, and in addition, the flow speed is high, the mechanical vibration is larger, so that the corrugated pipe is easy to deform and even is broken by scouring wear, meanwhile, the rigidity performance is poor, and the service life of a product is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel thick wall expansion joint to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel thick wall expansion joint, includes the bellows, be equipped with interior thick pipe in the bellows, and the both ends clearance all installs first flange between bellows and the interior thick pipe, thin pipe in the intraductal thick pipe that is equipped with of interior, interior thin pipe both ends all turn up, and press respectively overhead in interior thick pipe both ends, interior thick pipe both ends are all overlapped and are equipped with the second flange, and first flange and second flange pass through bolt looks fixed connection, all be equipped with the installing port on the pipe wall of interior thick pipe both ends, and on two installing port internal orifice walls respectively fixed mounting have intake pipe and outlet duct.

Preferably, the inner thick pipe and the inner thin pipe are both flexible steel pipes, and the thickness of the inner thick pipe is 2-4 times that of the inner thin pipe.

Preferably, the gap between the corrugated pipe and the inner thick pipe is filled with a sealing filler, and the sealing filler is aluminum silicate fiber cotton.

Preferably, the pipe diameter of the inner thin pipe positioned in the inner thick pipe is arranged in a mode that two ends of the pipe diameter are large and the middle of the pipe diameter is small.

Preferably, the inner tube wall of the inner thin tube is provided with a fluorine lining layer, and the tube wall part of the inner thin tube in the inner thick tube is covered with a silica gel layer.

Compared with the prior art, the beneficial effects of the utility model are that: through interior thick pipe and interior thin pipe that establish mutually in the bellows, and form confined air cavity between interior thick pipe and the interior thin pipe, when will carrying fly ash or oil medium or gaseous medium, the medium extrudees the interior thin pipe wall, through intake pipe gas transmission, incessantly to air cavity single high strength gas transmission, the air current can form the compensation effect to the medium extrusion force, produce the effect that offsets, promote anti internal pressure ability, reduce bellows deformation probability, the life of improvement product.

Drawings

Fig. 1 is a sectional structure view of the present invention.

In the figure: 1 corrugated pipe, 2 inner thick pipes, 3 inner thin pipes, 4 air inlet pipes, 5 air outlet pipes, 6 first flanges, 7 second flanges and 8 bolts.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a novel thick-wall expansion joint comprises a corrugated pipe 1, an inner thick pipe 2 is arranged in the corrugated pipe 1, first flanges 6 are arranged in gaps between two ends of the corrugated pipe 1 and the inner thick pipe 2, a sealing filler is filled in the gap between the corrugated pipe 1 and the inner thick pipe 2 and is aluminum silicate fiber cotton, the aluminum silicate fiber cotton is arranged to ensure the compensation effect on the inner thick pipe 2, an inner thin pipe 3 is arranged in the inner thick pipe 2, a fluorine lining layer is arranged on the inner wall of the inner thin pipe 3, a silica gel layer covers the part, located in the inner thick pipe 2, of the inner thin pipe 3, the wear resistance and the deformability of the inner thin pipe 3 are ensured, two ends of the inner thin pipe 3 are turned outwards and are respectively pressed on two ends of the inner thick pipe 2, the pipe diameter of the inner thin pipe 3, located in the inner thick pipe 2, is arranged in a large-end shape and a small-end shape, the deformation range of the inner thick pipe 2 is enlarged, and the deformation effect of the inner thick pipe 2 extruded by, 2 both ends of interior thick pipe are all overlapped and are equipped with second flange 7, and first flange 6 and second flange 7 pass through 8 looks fixed connection of bolt, all be equipped with the installing port on the 2 both ends pipe walls of interior thick pipe, and on two installing port internal wall respectively fixed mounting have intake pipe 4 and outlet duct 5, interior thick pipe 2 and interior thin pipe 3 are flexible steel pipe, and 2 pipe thickness of interior thick pipe are 2 ~ 4 times of interior thin pipe 3 pipe thickness, when external single heavy-duty carrier gas scrapes 2 and interior thin pipe 3 between the air cavity to interior thick when, most can apply on interior thin pipe 3, in order to realize the compensation effect to the interior medium extrusion force of thin pipe 3.

The working principle is as follows: through establish interior thick pipe 2 and interior thin pipe 3 that the cover was established mutually in bellows 1, and form confined air cavity between interior thick pipe 2 and the interior thin pipe 3, when will carrying fly ash or oil medium or gaseous class medium, the medium extrudees 3 pipe walls of interior thin pipe, through intake pipe 4 gas transmission, incessantly to air cavity single high strength gas transmission, the air current can form the compensation effect to the medium extrusion force, produce the effect that offsets, promote anti internal pressure ability, reduce bellows 1 deformation probability, the life of improvement product.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel thick wall expansion joint, includes bellows (1), its characterized in that: the corrugated pipe is characterized in that an inner thick pipe (2) is arranged in the corrugated pipe (1), first flanges (6) are installed in gaps between two ends of the corrugated pipe (1) and the inner thick pipe (2), inner thin pipes (3) are arranged in the inner thick pipe (2), two ends of each inner thin pipe (3) are outwards turned and pressed on two ends of each inner thick pipe (2) respectively, second flanges (7) are sleeved at two ends of each inner thick pipe (2), the first flanges (6) and the second flanges (7) are fixedly connected through bolts (8), mounting openings are formed in pipe walls of two ends of each inner thick pipe (2), and an air inlet pipe (4) and an air outlet pipe (5) are fixedly installed on inner opening walls of the two mounting openings respectively.

2. A novel thick-walled expansion joint as claimed in claim 1, wherein: the inner thick pipe (2) and the inner thin pipe (3) are both flexible steel pipes, and the thickness of the inner thick pipe (2) is 2-4 times that of the inner thin pipe (3).

3. A novel thick-walled expansion joint as claimed in claim 1, wherein: and a sealing filler is filled in a gap between the corrugated pipe (1) and the inner thick pipe (2), and the sealing filler is aluminum silicate fiber cotton.

4. A novel thick-walled expansion joint as claimed in claim 1, wherein: the pipe diameter of the inner thin pipe (3) positioned in the inner thick pipe (2) is arranged in a shape that two ends are large and the middle part is small.

5. A novel thick-walled expansion joint as claimed in claim 1, wherein: the inner wall of the inner thin pipe (3) is provided with a fluorine lining layer, and the part of the inner thin pipe (3) positioned in the inner thick pipe (2) is covered with a silica gel layer.