CN212131698U

CN212131698U - Displacement compensation device of curve pipeline

Info

Publication number: CN212131698U
Application number: CN202020656713.4U
Authority: CN
Inventors: 赵璇
Original assignee: Aerosun Tola Expansion Joint Co ltd
Current assignee: Aerosun Tola Expansion Joint Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-12-11
Anticipated expiration: 2030-04-27

Abstract

The utility model relates to a displacement compensation device of a curve pipeline, which comprises a ripple compensator, wherein two ends of the ripple compensator are respectively connected with an outer pipe I and an outer pipe II in the curve pipeline through a fitting pipe I and a fitting pipe II; the fitting pipe I comprises a straight pipe I, one end of the straight pipe I is connected with the outer pipe I, and the other end of the straight pipe I is connected with the corrugated compensator; the fitting pipe II comprises a straight pipe II and an arc pipe; one end of the straight pipe II is connected with one end of the arc-shaped pipe; the other end of the straight pipe II is connected with the corrugated compensator; the other end of the arc-shaped pipe is connected with the outer pipe II. The utility model relates to a rationally, simple structure, convenient to use can subside the vertical displacement that arouses because of the ground to the curve pipeline to and along the axial displacement of pipeline self trend and along curve pipeline on each point rather than the radial displacement of the radius of curvature centre of a circle line that corresponds etc. carry out effective compensation, ensure curve pipeline's safe in utilization.

Description

Displacement compensation device of curve pipeline

Technical Field

The utility model relates to a pipeline structure, especially a pipeline displacement compensation arrangement, specific displacement compensation arrangement of curve pipeline that says so.

Background

The horizontal curved-line metal pipeline system is matched with public buildings with various streamline appearances, and most of the metal pipeline systems for conveying fluid or providing energy for the public buildings are installed in a horizontal curved-line arrangement mode. When in bird's-eye view, the arc lines with different curvature radiuses on the plane of the pipeline are tangent with the arc lines or the arc lines are tangent with the straight lines.

The pipeline system arranged in a curve is characterized in that the span between the fixed brackets is large, and the independent pipe section between the two fixed brackets has two displacement compensation requirements: one is the vertical displacement of the pipeline across the settlement joint caused by foundation settlement; the other is the metal pipeline expansion with heat and contraction with cold displacement caused by the medium temperature in the pipeline, which comprises the axial displacement along the self trend of the pipeline and the radial displacement along the connecting line of each point on the curve pipeline and the circle center of the curvature radius corresponding to each point. Under long-term working conditions, the two displacements are reflected as combined displacement compensation requirements of the curved pipeline. However, no displacement compensation scheme specific for such curved conduits exists. Therefore, it is necessary to design a structure to solve the displacement compensation problem of the curved pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a displacement compensation device of curve pipeline to the difficulty that meets in the aspect of curve pipeline displacement compensation at present, effectively solved the compensation in the aspects such as vertical displacement, axial displacement and radial displacement of curve pipeline, ensured the security of pipe use.

The technical scheme of the utility model is that:

a displacement compensation device of a curve pipeline comprises a corrugated compensator, wherein two ends of the corrugated compensator are respectively connected with an outer pipe I and an outer pipe II in the curve pipeline through a fitting pipe I and a fitting pipe II; the fitting pipe I comprises a straight pipe I, one end of the straight pipe I is connected with the outer pipe I, and the other end of the straight pipe I is connected with the corrugated compensator; the fitting pipe II comprises a straight pipe II and an arc pipe; one end of the straight pipe II is connected with one end of the arc-shaped pipe; the other end of the straight pipe II is connected with the corrugated compensator; the other end of the arc-shaped pipe is connected with the outer pipe II.

Furthermore, the fitting pipe I also comprises a reducing pipe, one end of the reducing pipe is connected with one end of the straight pipe I, and the other end of the reducing pipe is connected with the corrugated compensator.

Furthermore, the curvature radius of the arc-shaped pipe is the same as that of the outer pipe II, and the length of the arc-shaped pipe is less than or equal to the arc length corresponding to the 3-degree central angle.

Furthermore, a free sliding support is arranged on the fitting pipe II.

Furthermore, the device also comprises a plurality of radial limit supports which are respectively arranged on the arc-shaped pipe and the outer pipe II.

The utility model has the advantages that:

the utility model relates to a rationally, simple structure, convenient to use can subside the vertical displacement that arouses because of the ground to the curve pipeline to and along the axial displacement of pipeline self trend and along curve pipeline on each point rather than the radial displacement of the radius of curvature centre of a circle line that corresponds etc. carry out effective compensation, ensure curve pipeline's safe in utilization.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the change caused by the expansion and contraction displacement seen from the top view of the pipeline under the working condition.

FIG. 3 is a schematic diagram of the change caused by the settlement displacement of the foundation visible in the pipeline in the working condition.

Fig. 4 is a schematic view of a free sliding bearing.

FIG. 5 is a schematic view of a radial limit support.

Wherein: 1-outer tube I; 21-straight pipe I; 22-a reducing pipe; 3-a ripple compensator; 41-straight pipe II; 42-an arc-shaped tube; 5-free sliding bearing; 6-radial limit bearing; 61-a support; 62-a limiting structural member; 7-outer tube II; 8-settlement joint; 9-building a structure; 10-fixed support I; 11-fixing the support II.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in figures 1, 4 and 5.

A displacement compensation device for a curved pipeline comprises a corrugated compensator 3. The two ends of the corrugated compensator 3 are respectively connected with an outer pipe I1 and an outer pipe II7 in a curve pipeline through a fitting pipe I and a fitting pipe II. The curvature radius of the outer pipe I1 is R1, the nominal diameter is D1, and a fixing support I10 is arranged on the outer pipe. The curvature radius of the outer pipe II7 is R2, the nominal diameter is D2, and a fixing support II11 is arranged on the outer pipe II 7. The outer pipe I1 and the outer pipe II7 are respectively positioned at two sides of the settlement joint 8, and the middle connecting pipe at one side of the double-working corrugated pipe of the corrugated pipe compensator 3 is positioned at the upper part of the settlement joint 8.

The fitting tube I comprises a straight tube I21 and a reducing tube 22. One end of the straight pipe I21 is connected to one end of the reducing pipe 22. The other end of the straight pipe I21 is connected with the outer pipe I1, and the other end of the reducing pipe 22 is connected with the corrugated compensator 3, so that the reducing fitting connection between the outer pipe I1 and the corrugated compensator 3 is realized.

The fitting pipe II comprises a straight pipe II41 and an arc pipe 42; one end of the straight pipe II41 is connected with one end of the arc-shaped pipe 42; the other end of the straight pipe II41 is connected with the corrugated compensator 3; the other end of the arced tube 42 is connected to the outer tube II 7. The radius of curvature of the arced tube 42 is the same as the radius of curvature of the outer tube II7, and the length of the arced tube is less than or equal to the arc length corresponding to the 3-degree central angle. Preferably, when the nominal diameter is less than or equal to 200mm, the arc-shaped pipe 42 can be formed by mechanical bending; when the nominal diameter is larger than 200mm, the arc-shaped pipe 42 is formed by butt welding according to a circumscribed regular polygon with more than or equal to 180 sides of the pipe center circle of the outer pipe II 7.

And a free sliding support 5 is arranged on the fitting pipe II. This free sliding support 5 lays on building structure 9 to make its actual distance with 3 tip of corrugated compensator match with the actual distance of corrugated compensator 3 other end and fixed bolster I10, and make the distance of pipeline installation center deviation to the cold-shrinking side be half of radial expend with heat and contract with cold volume difference, guarantee that the pipeline all is located building structure's effective effect interval after the installation and expend with heat and contract with cold displacement when taking place.

Meanwhile, a plurality of radial limit bearings 6 are arranged on the arc-shaped pipe 42 and the outer pipe II 7. The radial limit support 6 comprises a support body 61 and a limit structure 62. The supporting body 61 is connected with the arc-shaped pipe 42 or the outer pipe II7, the supporting body 61 is placed on the building structure 9, the limiting structural member 62 can be made of section steel and is welded and fixed on the building structure 9, and therefore a cold contraction gap and a heat expansion gap can be formed between the arc-shaped pipe or the outer pipe II and the limiting structural member. Wherein, be located the arc inboard of outer tube II7 is the shrinkage clearance, be located its outside be the expend with heat clearance. During installation, the radial limit bearings 6 are uniformly distributed between the free sliding bearing 5 and the fixed support II11 in equal arc length. Preferably, when the nominal diameter is less than or equal to 250mm, the equal arc length span is less than or equal to 6 meters; when the nominal diameter is larger than 250mm, the equal arc length span is less than or equal to 9 meters.

Furthermore, in order to control the expansion gap and the contraction gap of each radial limit support, the radial net displacement of each radial limit support corresponding to the pipeline node at the working temperature is obtained through pipeline stress analysis calculation, namely the expansion and contraction value along the direction of the connection line of each relevant node and the circle center O point is obtained, the sum of the positive tolerance which is larger than zero and smaller than 3 and the thickness of the pipeline heat insulation layer is obtained, and the expansion gap and the contraction gap are obtained.

The free sliding bearing 5 and the radial limit bearing 6 can be manufactured according to the national standard GB/T17116.2 and combined with the actual installation environment.

The corrugated compensator 3 is a straight pipe pressure balance transverse corrugated compensator, and a product with the patent number of ZL98227614.1 can be selected.

Building structure 9 can be the steel construction, including the channel-section steel pipe support with locate the built-in fitting steel sheet of its bottom. The building structure may also be a concrete structure, or other structure.

As shown in FIG. 2, the utility model discloses under operating condition, overlook when curve pipeline takes place the whole change of axial and radial combination displacement that thermal expansion arouses, compare with the installation status goes on. As shown in FIG. 3, it is that the utility model discloses under operating condition, the pipeline is because of the ground subsides and takes place and arouse vertical displacement to and when changing with the whole of axial and radial displacement combination, with the comparison of mounted state. From this, can clearly see, the utility model discloses effectively compensated relevant displacement, ensured the safe handling of curve pipeline.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The displacement compensation device for the curved pipeline comprises a corrugated compensator and is characterized in that: two ends of the corrugated compensator are respectively connected with an outer pipe I and an outer pipe II in a curve pipeline through a fitting pipe I and a fitting pipe II; the fitting pipe I comprises a straight pipe I, one end of the straight pipe I is connected with the outer pipe I, and the other end of the straight pipe I is connected with the corrugated compensator; the fitting pipe II comprises a straight pipe II and an arc pipe; one end of the straight pipe II is connected with one end of the arc-shaped pipe; the other end of the straight pipe II is connected with the corrugated compensator; the other end of the arc-shaped pipe is connected with the outer pipe II.

2. The displacement compensating device for a curved pipe according to claim 1, wherein: the fitting pipe I further comprises a reducing pipe, one end of the reducing pipe is connected with one end of the straight pipe I, and the other end of the reducing pipe is connected with the corrugated compensator.

3. The displacement compensating device for a curved pipe according to claim 1, wherein: the curvature radius of the arc-shaped pipe is the same as that of the outer pipe II, and the length of the arc-shaped pipe is less than or equal to the arc length corresponding to a 3-degree central angle.

4. The displacement compensating device for a curved pipe according to claim 1, wherein: and a free sliding support is arranged on the fitting pipe II.

5. The displacement compensating device for a curved pipe according to claim 1, wherein: the device also comprises a plurality of radial limiting supports which are respectively arranged on the arc-shaped pipe and the outer pipe II.