CN206582424U - A kind of box pipeline that there is circumferential fillet to connect - Google Patents

Abstract

The utility model discloses a box-shaped pipeline with rounded corner connections in the circumferential direction. The unit pipe joints are assembled in the circumferential direction from unit plates located on the upper, lower and two sides respectively, and the unit pipe joints are assembled in the axial direction to form a box shape. pipeline; wherein, the unit plate is an arc-shaped plate arched to the outside of the box-shaped pipeline, and a circular arc transition connection is adopted between two adjacent unit plates in the circumferential direction; the advantages of the utility model are: firstly, the pipeline is While using the principle of pipe-soil common force to reduce the pressure on the pipe body, it effectively avoids the problem of stress concentration at the circumferential connection corner; secondly, each plate of the pipe can be a prefabricated part with a single arc and a simple structure. It is convenient for mass production; moreover, each plate of the pipeline is bolted through the steel flange, which is convenient for the installation in the early stage of the project and the disassembly and maintenance in the later stage.

Description

A box-shaped pipe with circumferential fillet connections

technical field

The utility model relates to a box-shaped pipeline, in particular to a box-shaped pipeline with circumferential fillet connection.

Background technique

The applicant previously applied for an invention patent titled "Box-shaped Pipeline with Circumferential Obtuse Angle Connection" with application number 201610649976.0. Pipe joint, the unit pipe joint is assembled in the axial direction to form a box-shaped pipe, and the unit plates are arched to the outside of the box-shaped pipe and connected at an obtuse angle in the circumferential direction, that is, the inner wall arc line of two adjacent unit plates arched outward Above, the angle formed between the tangents of the points closest to the same connection angle is an obtuse angle. Under the joint force of the pipe and soil, the vertical load borne by the unit plate is transformed into the circumferential direction of the unit plate. There may be stress concentration at the corners of the circumferential connection, posing a potential threat to the entire pipeline.

Utility model content

Purpose of the utility model: The purpose of the utility model is to provide a box-shaped pipeline with circumferential fillet connection that avoids stress concentration at the pipeline connection, can quickly realize pipeline splicing, and simplifies the production process.

Technical solution: The box-shaped pipeline with circumferential fillet connection of the utility model includes unit pipe joints formed by assembling the unit plates located on the upper, lower and two sides respectively in the circumferential direction, and the unit pipe joints are assembled in the axial direction to form a box shape Pipe; wherein, the unit plate is an arc-shaped plate that arches toward the outside of the box-shaped pipeline, and two adjacent unit plates in the circumferential direction are connected by a circular arc transition, that is, there is no sudden change at the connection between adjacent unit plates Corner point, the diameter of the arc side of the curved unit plate in the cross section of the connected pipe is greater than the length of the diagonal of the pipe gallery.

Further, arc corner pieces are provided between the circumferential connection ends of the unit plates, and at the same time, two adjacent unit plates in the circumferential direction are connected to the arc corner pieces by arc transitions. That is, the tangent line of the arc corner piece and the inner wall arc line of the circumferentially adjacent unit plate, which is closest to the same connection angle position, coincides, that is, the circumferentially connected unit plate and the arc corner piece are in an arc , there is no abrupt corner point.

When the arc angle piece is arranged at the connection end, the unit plate and the adjacent arc angle piece can be made into one piece as required, and the unit plate can be spliced with one arc angle piece in the circumferential direction to form a self-contained The arc-shaped unit plates with arc angles may be circumferentially spliced with an arc angle plate at both ends to form arc-shaped unit plates with arc angles at both ends. Specifically, the unit pipe joint can be formed by direct arc transition connection of four arc-shaped unit plates; it can also be assembled from four arc-shaped unit plates and four arc corner pieces at circumferential intervals; it can also be assembled first One arc-shaped unit plate and one arc-shaped corner plate are made into one piece (arc-shaped unit plate with an arc angle at one end), and then four arc-shaped unit plates with an arc angle at one end are circumferentially Assembled; it is also possible to connect the two ends of an arc-shaped unit plate with an arc-shaped corner piece respectively to make a one-piece piece (arc-shaped unit plate with arc-shaped corners at both ends), and then two pieces of two The arc-shaped unit plate with its own arc angle at the end is assembled with two arc-shaped unit plates at intervals in the circumferential direction.

Secondly, the circumferential and axial joints of the unit plate and the arc angle piece are provided with profiled steel flanges, and are bolted through the profiled steel flange, so that the unit plate and the arc angle piece can be produced into prefabricated parts, which is convenient Pre-installation and post-split maintenance.

At the same time, a gasket is provided at the bolted joint of the section steel flange to ensure the sealing effect of the bolted joint.

Finally, both the unit half piece and the arc corner piece are preferably steel structural members.

Working principle: The box-shaped pipe is made to arch to the outside of the pipe, making full use of the principle of joint force of the pipe and soil to reduce the pressure on the pipe body, and adopting a circular arc transition connection at the connection, effectively avoiding the circumferential connection angle of the unit plate Stress concentration on the edge.

Beneficial effects: Compared with the prior art, the utility model has the following advantages: (1) While using the principle of pipe-soil joint force to reduce the pressure on the pipe body, it effectively avoids the problem of stress concentration at the edge of the circumferential connection angle (2) Each plate of the pipeline can be a prefabricated part with a single radian and a simple structure, which is convenient for mass production; (3) Each plate of the pipeline is bolted through a steel flange, which is convenient for installation in the early stage of the project and disassembly in the later stage repair.

Description of drawings

Fig. 1 is a cross-sectional schematic diagram of a unit pipe joint connected by four arc-shaped unit plates with arc transitions;

Fig. 2 is a schematic cross-sectional view of a unit pipe joint formed by connecting four arc-shaped unit plates and four arc corners;

Fig. 3 is a cross-sectional schematic diagram of a unit pipe joint formed by connecting four arc-shaped unit plates with arc angles at one end;

Fig. 4 is a schematic cross-sectional view of a unit pipe joint formed by connecting two arc-shaped unit plates with arc angles at both ends and two arc-shaped unit plates.

detailed description

Below in conjunction with accompanying drawing, the technical scheme of the utility model is further described.

As shown in Figure 1, the box-shaped pipeline includes unit plates 1 located on the upper, lower and both sides respectively assembled in the circumferential direction to form a unit pipe section, and the unit pipe section is assembled in the axial direction to form a box-shaped pipeline; wherein, the The unit plate 1 is an arc-shaped plate that arches to the outside of the box-shaped pipe, and two adjacent unit plates 1 in the circumferential direction are connected by a circular arc transition, that is, there is no sudden corner point at the connection between adjacent unit plates, and the connection The diameter of the arc side of the arc-shaped unit plate in the cross-section of the formed pipe is greater than the length of the diagonal line of the pipe gallery.

Arc angle pieces 2 are arranged between the circumferential connection ends of the unit plates, and at the same time, two circumferentially adjacent unit plates 1 and arc angle pieces 2 are connected by arc transitions. That is, the arc angle piece 2 coincides with the tangent line of the point closest to the same connection angle position on the inner wall arc line of the circumferentially adjacent unit plate 1, that is to say, the circumferentially connected unit plate 1 and the arc angle piece 2 On an arc, there is no abrupt corner point.

The unit plate 1 and the adjacent arc corner piece 2 can be made into one piece according to the needs, that is, the unit plate 1 can be spliced with one arc corner piece 2 in the circumferential direction to form a circular arc angle at one end. The arc-shaped unit plate 3 or both ends can be spliced circumferentially with an arc-shaped corner plate 2 to form an arc-shaped unit plate 4 with arc angles at both ends, and then circumferentially spliced, mainly including the following splicing methods :

As shown in FIG. 1 , the unit pipe section can be formed by directly connecting four arc-shaped unit plates 1 through arc transition.

As shown in FIG. 2 , the unit pipe joint can also be assembled from four arc-shaped unit plates 1 and four arc-shaped corner pieces 2 at intervals in the circumferential direction.

As shown in Figure 3, it is also possible to first make an arc-shaped unit plate 1 and an arc-shaped corner plate 2 into one piece (an arc-shaped unit plate 3 with an arc angle at one end), and then four pieces with one end automatically The arc-shaped unit plates 3 with arc angles are assembled in the circumferential direction to form unit pipe joints.

As shown in Figure 4, it is also possible to firstly connect the two ends of an arc-shaped unit plate 1 with an arc-shaped corner piece 2 to make an integral part (arc-shaped unit plate 4 with arc angles at both ends), Then two arc-shaped unit plates 4 with arc angles at both ends and two arc-shaped unit plates 1 are assembled at intervals in the circumferential direction to form a unit pipe joint.

The circumferential and axial joints between the unit plate and the arc angle piece, or the circumferential and axial joints of two adjacent arc-shaped unit plates with arc angles at one end, or the two ends with rounded The arc-shaped unit plate 4 of the arc angle and the unit plate 1 are provided with steel flanges in the circumferential direction and axial direction, and are bolted through the steel flanges, so that the unit plate and the arc angle piece can be produced into prefabricated parts , which is convenient for early installation and later disassembly maintenance.

At the same time, a gasket is provided at the bolted joint of the section steel flange to ensure the sealing effect of the bolted joint.

Finally, both the unit half piece and the arc corner piece are steel structural parts.

Claims (6)

1. a kind of box pipeline that there is circumferential fillet to connect, it is characterised in that：Including by being located at upper and lower and two sides respectively Unit sheet bar (1) is circumferentially assembled to form unit tube coupling, and the unit tube coupling is assembled vertically to form box pipeline；Wherein, it is described Unit sheet bar (1) is the arc to arch camber on the outside of box pipeline, and circumferentially-adjacent two unit sheet bars are using arc transition company Connect.

2. the box pipeline according to claim 1 that there is circumferential fillet to connect, it is characterised in that：The unit sheet bar (1) circular arc cornual plate (2) is provided between circumferential connection end, meanwhile, circumferentially-adjacent two unit sheet bars (1) are adopted with circular arc cornual plate (2) Connected with arc transition.

3. the box pipeline according to claim 2 that there is circumferential fillet to connect, it is characterised in that：The unit sheet bar (1) can be circumferentially spliced to form with circular arc cornual plate (2) one end carry arc chord angle arc unit sheet bar (3) or can two End is circumferentially spliced to form the arc unit sheet bar (4) that two ends carry arc chord angle with a circular arc cornual plate (2) respectively.

4. the box pipeline according to claim 2 that there is circumferential fillet to connect, it is characterised in that：The unit sheet bar (1) shaped steel flange is provided with the circumferential and axial junction of circular arc cornual plate (2), and is bolted by shaped steel flange.

5. the box pipeline according to claim 4 that there is circumferential fillet to connect, it is characterised in that：In the shaped steel flange Bolt at set sealing gasket.

6. the box pipeline according to claim 2 that there is circumferential fillet to connect, it is characterised in that：The unit sheet bar (1) it is steel construction piece with circular arc cornual plate (2).