CN213333026U

CN213333026U - Double-layer expansion joint easy to install

Info

Publication number: CN213333026U
Application number: CN202021711443.9U
Authority: CN
Inventors: 吴崇俊; 吴逸彪; 王桂平
Original assignee: Taizhou Huisheng Pipeline Equipment Co ltd
Current assignee: Taizhou Huisheng Pipeline Equipment Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-06-01
Anticipated expiration: 2030-08-17

Abstract

The utility model relates to the technical field of expansion joints, and discloses an easily-installed double-layer expansion joint, which solves the problems that the expansion joint is mostly arranged in a single layer, the surface of the expansion joint is of a protective structure, and the expansion joint is easily damaged; the inside of bellows is provided with the honeycomb duct, and the both ends of honeycomb duct are inserted respectively and are established in both ends connecting pipe, and honeycomb duct and connecting pipe sliding fit. The protective shell is additionally arranged on the outer side of the corrugated pipe, so that the corrugated pipe can be well protected, the damage to the expansion joint is reduced, and the corrugated pipe is simple in structure, convenient to install, stable in connection, safe and reliable.

Description

Double-layer expansion joint easy to install

Technical Field

The utility model relates to an expansion joint technical field especially relates to a double-deck expansion joint of easy installation.

Background

The expansion joint is a flexible structure provided on the vessel shell or pipe to compensate for additional stresses due to temperature differences and mechanical vibrations. As an elastic compensation element capable of freely stretching, the elastic compensation element has the advantages of reliable work, good performance, compact structure and the like, and is widely applied to chemical industry, metallurgy, nuclear energy and the like. In the prior art, the expansion joint is mostly arranged in a single layer, the surface of the expansion joint is of a protection structure, and the expansion joint is easy to damage, so that a double-layer expansion joint easy to install is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the expansion joint that exists among the prior art and mostly being the individual layer setting, its surface is protective structure, easily causes the shortcoming of the damage of expansion joint, and the double-deck expansion joint of an easy installation that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an easily-installed double-layer expansion joint comprises a protective shell, wherein sealing plates are arranged at two ends of the protective shell, connecting pipes are arranged on the sealing plates at two sides in a penetrating mode, the connecting pipes are in sliding fit with the sealing plates, corrugated pipes are fixed between the connecting pipes at two ends, and connecting flanges are fixed at the ends, far away from each other, of the connecting pipes at two ends;

and a flow guide pipe is arranged inside the corrugated pipe, two ends of the flow guide pipe are respectively inserted into the connecting pipes at two ends, and the flow guide pipe is in sliding fit with the connecting pipes.

Preferably, a plurality of reinforcing rings are clamped on the outer wall of the corrugated pipe, and the reinforcing rings are linearly arranged.

Preferably, a limiting rod is fixed on the inner wall of the sealing plate, and the limiting rod is in contact with the reinforcing ring.

Preferably, a plurality of positioning rods are uniformly arranged on the inner wall of the connecting pipe and extend to the outer side of the connecting pipe.

Preferably, the number of the positioning rods is two to ten, and the positioning rods are welded and fixed with the connecting pipes.

The utility model has the advantages that:

the protective shell is additionally arranged on the outer side of the corrugated pipe, so that the corrugated pipe can be well protected, the damage to the expansion joint is reduced, and the corrugated pipe is simple in structure, convenient to install, stable in connection, safe and reliable.

Drawings

Fig. 1 is a schematic structural diagram of an easily-installed double-layer expansion joint provided by the present invention;

fig. 2 is a schematic structural diagram of a side view of a connecting pipe in a double-layer expansion joint easy to install.

In the figure: 1 protecting crust, 2 shrouding, 3 connecting pipes, 4 flange, 5 bellows, 6 honeycomb ducts, 7 beaded finish, 8 gag lever posts, 9 locating levers.

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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-2, an easily-installed double-layer expansion joint comprises a protective shell 1, wherein sealing plates 2 are arranged at two ends of the protective shell 1, connecting pipes 3 are arranged on the sealing plates 2 at two sides in a penetrating manner, through holes matched with the sealing plates 2 are formed in the sealing plates 2, the connecting pipes 3 are in sliding fit with the sealing plates 2, corrugated pipes 5 are fixed between the connecting pipes 3 at two ends, and connecting flanges 4 are fixed at the ends, far away from each other, of the connecting pipes 3 at two ends;

the inside of bellows 5 is provided with honeycomb duct 6, and the both ends of honeycomb duct 6 are inserted respectively and are established in both ends connecting pipe 3, and honeycomb duct 6 and connecting pipe 3 sliding fit.

Further, the joint has a plurality of beaded finish 7 on the outer wall of bellows 5, and beaded finish 7 is located 5 outer wall recesses of bellows, and beaded finish 7 linear arrangement reinforces bellows 5 through beaded finish 7.

Furthermore, a limiting rod 8 is fixed on the inner wall of the sealing plate 2, and the limiting rod 8 is in contact with the reinforcing ring 7 to avoid the connecting pipe 3 from sliding out.

Further, evenly be provided with many locating levers 9 on the inner wall of connecting pipe 3, locating lever 9 extends to the outside of connecting pipe 3, and the quantity of locating lever 9 is two to ten, and locating lever 9 and connecting pipe 3 welded fastening, and connecting pipe 3 and outside pipeline of being convenient for are to it.

In this embodiment, insert through locating lever 9 and establish in external pipeline, tentatively fix a position this expansion joint to be convenient for flange 4 and external pipeline fixed connection, and add protecting crust 1 in the outside of bellows 5, it can be better protects bellows 5, reduces the damage of expansion joint, its simple structure, simple to operate, connect stable, safe and reliable.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An easily-installed double-layer expansion joint comprises a protective shell (1) and is characterized in that sealing plates (2) are arranged at two ends of the protective shell (1), connecting pipes (3) are arranged on the sealing plates (2) at two sides in a penetrating mode, the connecting pipes (3) are in sliding fit with the sealing plates (2), corrugated pipes (5) are fixed between the connecting pipes (3) at the two ends, and connecting flanges (4) are fixed at the ends, far away from each other, of the connecting pipes (3) at the two ends;

the corrugated pipe (5) is internally provided with a flow guide pipe (6), two ends of the flow guide pipe (6) are respectively inserted into the connecting pipes (3), and the flow guide pipe (6) is in sliding fit with the connecting pipes (3).

2. An easily installed double-layer expansion joint according to claim 1, wherein a plurality of reinforcing rings (7) are clamped on the outer wall of the corrugated pipe (5), and the reinforcing rings (7) are linearly arranged.

3. An easily installed double-layer expansion joint according to claim 2, wherein a limiting rod (8) is fixed on the inner wall of the sealing plate (2), and the limiting rod (8) is in contact with the reinforcing ring (7).

4. An easily installed double-layer expansion joint according to claim 1, wherein a plurality of positioning rods (9) are uniformly arranged on the inner wall of the connecting pipe (3), and the positioning rods (9) extend to the outer side of the connecting pipe (3).

5. The double-layer expansion joint easy to install according to claim 4, characterized in that the number of the locating rods (9) is two to ten, and the locating rods (9) are welded and fixed with the connecting pipe (3).