CN221800979U - Special compensator for reducing pipeline - Google Patents

Abstract

The utility model discloses a special compensator for reducing a pipeline in the technical field of pipeline facilities, which comprises a connecting plate, wherein the surface of the connecting plate is connected with a flange plate through a corrugated pipe, a pipe orifice is formed in the center of the corrugated pipe, and a plurality of groups of fixing pieces connected with the connecting plate are arranged on the outer ring of the flange plate; a first fixed pipe is welded in the corrugated pipe on the top surface of the connecting plate, the first fixed pipe surrounds the outer ring of the pipe orifice, a second fixed pipe is welded in the corrugated pipe on the bottom surface of the flange plate, the second fixed pipe is sleeved on the outer ring of the first fixed pipe in a sliding way, the fixing piece comprises a mounting plate welded on the outer ring of the flange plate, the utility model solves the problems that the inner cavity of the existing special compensator for reducing the pipeline has poor protection effect, the inner wall of the corrugated pipe directly receives the impact from water flow for a long time, is easy to damage and is not beneficial to prolonging the service life of the compensator.

Description

A special compensator for pipe diameter change

Technical Field

The utility model relates to the technical field of pipeline facilities, in particular to a special compensator for pipeline diameter change.

Background Art

Compensators are also customarily called expansion joints, or telescopic joints. They are composed of bellows and end pipes, brackets, flanges and other accessories that constitute their working body. They are a type of compensation element that utilizes the effective expansion and contraction of the bellows, the working body, to absorb dimensional changes in pipelines, ducts, containers, etc. caused by thermal expansion and contraction, or to compensate for axial, lateral and angular displacements of pipelines, ducts, containers, etc. They can also be used to reduce noise and vibration, and are widely used in modern industry.

The existing special compensators for pipe diameter reduction have poor protection effect on the inner cavity. The inner wall of the bellows is easily damaged due to long-term direct impact from the water flow, which is not conducive to extending the service life of the compensator. Therefore, technical personnel in this field provide a special compensator for pipe diameter reduction to solve the problems raised in the above background technology.

Utility Model Content

The utility model aims to provide a special compensator for pipeline diameter change to solve the problems raised in the above background technology.

To achieve the above object, the utility model provides the following technical solutions: a special compensator for pipe diameter reduction, comprising a connecting plate, the surface of the connecting plate is connected to a flange through a bellows, the connecting plate is provided with a pipe opening at the center of the bellows, and the outer ring of the flange is provided with multiple groups of fixings connected to the connecting plate;

The top surface of the connecting plate is located inside the corrugated tube and is welded with a first fixed tube, which surrounds the outer ring of the pipe mouth; the bottom surface of the flange is located inside the corrugated tube and is welded with a second fixed tube, which is slidably sleeved on the outer ring of the first fixed tube.

Preferably, the fixing member comprises a mounting plate welded to the outer ring of the flange, a fixing bolt penetrating the mounting plate is welded to the top of the connecting plate, and two sets of locking nuts for clamping the mounting plate are threadedly connected to the surface of the fixing bolt.

Preferably, the flange, the pipe opening, the first fixed pipe and the second fixed pipe are all rectangular, and three groups of equidistantly arranged mounting plates are welded to two long sides of the rectangular flange.

Preferably: the four corners of the rectangular pipe opening, the first fixed pipe and the second fixed pipe are all provided with arc chamfers, and the four corners of the inner circle of the rectangular flange are all welded with angle irons connected to the top end of the second fixed pipe.

Compared with the prior art, the beneficial effects of the utility model are:

1. In the utility model, by providing a first fixed tube and a second fixed tube inside the bellows, and the two sets of sliding connections, it is possible to provide efficient protection for the inner ring of the bellows when the compensator is in use, thereby improving the safety performance of the pipe fittings and thus increasing the service life of the compensator.

2. In the utility model, by providing a rectangular flange, a pipe mouth, a first fixed pipe and a second fixed pipe, the flexibility of the use of the compensator is improved, and the four corners of the pipe mouth, the first fixed pipe and the second fixed pipe are provided with arc-shaped chamfers, which is convenient for improving the overall strength and rigidity of the component, thereby reducing the fatigue fracture rate of the component. At the same time, the existence of the arc-shaped chamfer can prevent leakage of the pipe fittings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a top view of the overall structure of the utility model;

FIG3 is a side view of the overall structure of the utility model;

FIG4 is a cross-sectional view of the overall structure of the utility model.

In the figure: 1. connecting plate; 2. bellows; 3. flange; 4. pipe mouth; 5. first fixed pipe; 6. second fixed pipe; 7. mounting plate; 8. fixing bolt; 9. locking nut; 10. angle iron.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1 to 4. In the embodiment of the utility model, a special compensator for pipe diameter reduction includes a connecting plate 1. The surface of the connecting plate 1 is connected to a flange 3 through a bellows 2. The connecting plate 1 is located at the center of the bellows 2 and is provided with a pipe opening 4. The outer ring of the flange 3 is provided with multiple groups of fixing parts connected to the connecting plate 1. The top surface of the connecting plate 1 is located inside the bellows 2 and is welded with a first fixing pipe 5. The first fixing pipe 5 surrounds the outer ring of the pipe opening 4. The bottom surface of the flange 3 is located inside the bellows 2 and is welded with a second fixing pipe 6. The second fixing pipe 6 is slidably sleeved on the outer ring of the first fixing pipe 5.

When in use, the direction is to guide the flow from the pipe mouth 4 to the inside of the bellows 2. The connecting plate 1 can be fixed to the equipment that needs to be connected to the pipe compensator, and the flange 3 is positioned and installed using the fixing parts. The flange 3 is connected to the end of the pipe fitting, and the first fixed pipe 5 and the second fixed pipe 6 are provided on the inner circle of the bellows 2, so that the liquid flowing inside the compensator can directly impact the first fixed pipe 5 and the second fixed pipe 6, thereby providing efficient protection for the inner circle of the bellows 2. When in use, the compensator can compensate for the thermal expansion and contraction deformation of the pipeline caused by temperature changes, pressure changes or vibrations, thereby extending the service life of the pipeline.

Specifically, the fixing part includes a mounting plate 7 welded to the outer ring of the flange 3, a fixing bolt 8 penetrating the mounting plate 7 is welded on the top of the connecting plate 1, and two sets of locking nuts 9 for clamping the mounting plate 7 are threadedly connected to the surface of the fixing bolt 8. The fixing bolt 8 is installed to the fixed position of the connecting plate 1. After tightening a set of locking nuts 9 at the bottom of the mounting plate 7, the mounting plate 7 is sleeved on the surface of the fixing bolt 8, and the other set of locking nuts 9 are tightened to fix the flange 3.

In one embodiment, the flange 3, the pipe mouth 4, the first fixed pipe 5 and the second fixed pipe 6 are all rectangular, which is convenient for connecting the irregular outlet of the equipment for drainage, etc., and improves the flexibility of the use of the compensator. Three groups of equidistantly arranged mounting plates 7 are welded on both long sides of the rectangular flange 3. Furthermore, the four corners of the rectangular pipe mouth 4, the first fixed pipe 5 and the second fixed pipe 6 are provided with arc-shaped chamfers. The arc-shaped chamfers can reduce the stress concentration of the material at the corners of the component, effectively improve the force and bending and torsion resistance of the component, and improve the overall strength and rigidity of the component. At the same time, the existence of the arc-shaped chamfers can prevent leakage of the pipe fittings and improve the safety performance of the pipe fittings. Angle irons 10 connected to the top of the second fixed pipe 6 are welded at the four corners of the inner circle of the rectangular flange 3 to facilitate the welding and installation of the second fixed pipe 6.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims (4)

1. A special compensator for reducing pipelines is characterized in that: the corrugated pipe comprises a connecting plate (1), wherein the surface of the connecting plate (1) is connected with a flange plate (3) through a corrugated pipe (2), a pipe orifice (4) is formed in the center of the corrugated pipe (2) in the connecting plate (1), and a plurality of groups of fixing pieces connected with the connecting plate (1) are arranged on the outer ring of the flange plate (3);

The inside welding that connecting plate (1) top surface is located bellows (2) has first fixed pipe (5), first fixed pipe (5) are around the outer lane at mouth of pipe (4), and the inside welding that ring flange (3) bottom surface is located bellows (2) has second fixed pipe (6), the outer lane at first fixed pipe (5) is established to second fixed pipe (6) slip cap.

2. The compensator special for reducing pipelines according to claim 1, wherein: the fixing piece comprises a mounting plate (7) welded on the outer ring of the flange plate (3), a fixing bolt (8) penetrating through the mounting plate (7) is welded on the top of the connecting plate (1), and two groups of locking nuts (9) for clamping the mounting plate (7) are connected to the surface of the fixing bolt (8) in a threaded mode.

3. The compensator special for reducing pipelines according to claim 2, wherein: the flange plate (3), the pipe orifice (4), the first fixed pipe (5) and the second fixed pipe (6) are rectangular, and the two long sides of the rectangular flange plate (3) are welded with three groups of mounting plates (7) which are equidistantly arranged.

4. A special compensator for reducing a pipeline according to claim 3, characterized in that: the four corners of the pipe orifice (4), the first fixed pipe (5) and the second fixed pipe (6) are respectively provided with an arc chamfer, and the four corners of the inner ring of the flange plate (3) are respectively welded with angle irons (10) connected with the top end of the second fixed pipe (6).