CN216768717U - Pipeline flange connecting structure - Google Patents

Abstract

The utility model relates to a pipeline flange connection structure, it includes the ring flange, the through-hole that a plurality of confession bolts passed is seted up along self circumference to the ring flange, still including being used for fixing the spacing ring at the pipeline end face, the spacing ring external diameter is greater than the external diameter of pipeline, the ring flange cup joints on the pipeline and relative pipeline circumferential direction, the internal diameter of ring flange is less than the external diameter of spacing ring. But this application utilizes the relative pipeline circumferential direction of ring flange, when there is the error in the adjacent pipeline of installation, but the adjacent ring flange aligns, has the adjacent pipeline of convenient connection, improves the effect of efficiency of construction.

Description

Pipeline flange connecting structure

Technical Field

The application relates to the field of pipeline installation technology, in particular to a pipeline flange connecting structure.

Background

When installing the pipeline, generally carry out size measurement according to the space of required installation, carry out the pipeline layout design again to need carry out reasonable segmentation processing with the pipeline, and carry out the fixed of ring flange at the pipeline both ends, when convenient follow-up on-the-spot installation pipeline, adjacent pipeline passes the installation work that the ring flange realized adjacent pipeline through the bolt.

In view of the above related technologies, the inventor thinks that in the process of processing the pipeline, a dimension deviation inevitably occurs, especially in a bent portion of the pipeline, once a processing dimension error occurs, the flanges of the adjacent pipelines cannot be aligned due to the fact that the flanges are fixed to the pipeline, so that in the installation process, the pipeline needs to be installed after the pipeline is redesigned temporarily, and the construction efficiency of the pipeline installation is affected.

Disclosure of Invention

In order to compensate errors generated in the pipeline design and production process and facilitate the installation and construction of subsequent pipelines, the application provides a pipeline flange connecting structure.

The application provides a pipeline flange connection structure adopts following technical scheme:

the utility model provides a pipeline flange connection structure, includes the ring flange, the through-hole that a plurality of confession bolts passed is seted up along self circumference to the ring flange, still including being used for fixing the spacing ring at the pipeline end face, the spacing ring external diameter is greater than the external diameter of pipeline, the ring flange cup joints on the pipeline and relative pipeline circumferential direction, the internal diameter of ring flange is less than the external diameter of spacing ring.

By adopting the technical scheme, when errors occur in pipeline design and the through holes of the flanges of the adjacent pipelines cannot be aligned, the flanges are sleeved on the pipelines and can rotate relative to the pipelines, so that the flanges can be driven to rotate circumferentially, the through holes of the adjacent flanges can be aligned, and bolts can conveniently penetrate into the adjacent flanges for connection; in this process, utilize the spacing ring of fixing at pipeline end to play the effect of blockking to the ring flange, make its ring flange only can pipeline circumferential direction relatively, and can't break away from the pipeline completely to when utilizing the adjacent ring flange of bolt fastening, ring flange butt spacing ring orders about the inseparable laminating of adjacent pipeline and is in the same place, when reaching convenient adjacent pipeline high-speed joint, guarantees the leakproofness between the pipeline.

Optionally, the inner diameter of the flange is larger than the outer diameter of the pipeline.

Through adopting above-mentioned technical scheme, when adjacent pipeline axis is not in same straight line, because the internal diameter of ring flange is greater than the external diameter of pipeline, make its ring flange radial displacement relatively, the alignment work of adjustment adjacent ring flange can also order about the relative pipeline slope of ring flange simultaneously, makes it can compensate under the different error condition of pipeline, and adjacent ring flange accessible bolt fastening still is integrative to when the ring flange is connected closely, order about the pipeline and support tightly together.

Optionally, one side of the limiting ring, which is far away from the end face of the pipeline, is connected with at least two groups of positioning columns, and the inner wall of the flange plate is correspondingly provided with a semicircular groove sleeved on the positioning columns.

By adopting the technical scheme, the inner diameter of the flange plate is larger than that of the pipeline, so that the state of the flange plate on the pipeline is disordered, and when the adjacent pipeline is error-free, the position of the flange plate also needs to be adjusted; the positioning columns connected to the limiting rings are in splicing fit with the semicircular grooves in the inner wall of the flange plate, and the flange plate can be limited in an initial state through multipoint positioning, so that when adjacent pipelines have no size error, the adjacent flange plates are directly and accurately aligned, bolts can conveniently and directly penetrate between the adjacent flange plates, and the adjacent pipelines are fixed; meanwhile, the positioning column positions the flange plate and the limiting ring, so that the stable connectivity between the flange plate and the limiting ring can be improved to a certain degree, and the overall stability of pipeline connection is improved; when the adjacent pipelines have errors, the positioning column can be taken down, and the flange plate can be manually adjusted.

Optionally, the positioning column is a limiting bolt, and the limiting ring is correspondingly provided with a threaded hole.

Through adopting above-mentioned technical scheme, the cooperation of spacing bolt and screw hole is convenient with spacing bolt with the ring flange spacing on the spacing ring, also conveniently takes off spacing bolt, relieves the flange and is connected with the spacing ring.

Optionally, the limiting ring is flush with the end face of the pipeline, an annular groove is formed in one side, away from the flange plate, of the limiting ring, and a sealing ring is arranged in the annular groove.

By adopting the technical scheme, because the limiting ring is an independent component, the annular groove can be conveniently processed, the sealing ring can be conveniently placed in the annular groove for preliminary positioning during pipeline connection, and the sealing ring can be extruded when abutting against adjacent pipelines, so that the sealing performance between the adjacent pipelines can be improved.

Optionally, the through hole of the flange plate is arranged to be a waist-shaped groove, and the length direction of the waist-shaped groove is parallel to the radial direction of the flange plate.

Through adopting above-mentioned technical scheme, when the pipeline error is great, when needs with the ring flange slope, along the radial waist type groove that sets up of ring flange, can make things convenient for the bolt to pass, realize the connection work of adjacent ring flange.

In summary, the present application includes at least one of the following beneficial technical effects:

the limiting ring is fixed on the pipeline, so that the flange plate can be limited on the pipeline, the flange plate can be kept to rotate circumferentially relative to the pipeline, meanwhile, the inner diameter of the flange plate is larger than the inner diameter of the pipeline, the radial displacement or inclination of the flange plate relative to the pipeline can be realized, when the adjacent pipeline has a size error, the alignment work of the adjacent flange plate can be kept by adjusting the position of the flange plate, and a bolt can conveniently penetrate through the adjacent flange plate to realize the limiting of the flange plate, so that the fixing of the adjacent pipeline is realized, the installation work of the pipeline is facilitated, and the installation efficiency of the pipeline is improved;

utilize the reference column can restrict the relative initial position of spacing ring of ring flange, when adjacent pipeline does not have dimensional error, adjacent pipeline counterpoint, adjacent ring flange counterpoint is accurate promptly, can directly penetrate the bolt, realizes the connection of ring flange, easy to assemble work.

Drawings

Fig. 1 is a schematic overall structure diagram of a pipe flange connection structure according to an embodiment of the present application.

Fig. 2 is a schematic view of the flange connection of fig. 1.

Fig. 3 is a schematic cross-sectional view of the flange connection of fig. 2.

Description of reference numerals: 1. a pipeline; 2. a flange plate; 3. a limiting ring; 4. an annular groove; 5. a seal ring; 6. a positioning column; 7. a threaded hole; 8. a semicircular groove; 9. a waist-shaped groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a pipeline flange connecting structure, which refers to fig. 1 and 2 and comprises a limiting ring 3 and a flange plate 2, wherein the limiting ring 3 is used for being welded and fixed at two ends of a pipeline 1, and the end surface of the limiting ring 3 is flush with the end surface of the pipeline 1; the flange 2 is sleeved on the pipeline 1, and the inner diameter of the flange is smaller than the outer diameter of the limiting ring 3; the flange plate 2 is provided with a plurality of through holes for bolts to pass through at equal intervals along the circumferential direction, the through holes are waist-shaped grooves 9, and the length direction of the waist-shaped grooves 9 is parallel to the radial direction of the flange plate 2; during installation, the flange plate 2 is sleeved on the pipeline 1, and then the limiting ring 3 is welded at the end part of the pipeline 1. When adjacent pipeline 1 installs, adjustable flange plate 2's circumferential direction makes its adjacent flange plate 2's waist type groove 9 align, conveniently penetrates the bolt wherein, realizes flange plate 2's stable connection, and 2 butt spacing rings 3 of flange plate order about adjacent pipeline 1 and support tightly to realize adjacent pipeline 1's installation.

Wherein, in order to guarantee the leakproofness between the adjacent pipeline 1, the terminal surface of keeping away from ring flange 2 at spacing ring 3 has seted up round ring channel 4, is provided with sealing washer 5 in the ring channel 4, and the thickness of sealing washer 5 is greater than the degree of depth sum of the ring channel 4 of two spacing rings 3, and when adjacent pipeline 1 supported tightly, sealing washer 5 deformation, interference fit between adjacent spacing ring 3 guarantees the leakproofness to between the pipeline 1.

In this embodiment, for the bigger degree compensate the size error of the pipeline 1, the inner diameter of the flange 2 is larger than the outer diameter of the pipeline 1 and smaller than the outer diameter of the limiting ring 3, so that the flange 2 can radially displace or incline relative to the pipeline 1, thereby adapting to the error of different pipelines 1 and not affecting the connection of the adjacent pipelines 1.

Referring to fig. 2 and 3, in order to facilitate the positioning of the flange 2, at least two groups of positioning columns 6 are connected to one side of the limiting ring 3 away from the annular groove 4; in the embodiment, two groups of positioning columns 6 are arranged and are distributed at equal intervals along the circumferential direction of the limiting ring 3; the positioning column 6 adopts a limiting bolt, a threaded hole 7 is correspondingly formed in the end face of the limiting ring 3, meanwhile, two groups of semicircular grooves 8 are formed in the inner wall of the flange plate 2, the semicircular grooves 8 penetrate through two sides of the flange plate 2 in the thickness direction, the limiting bolt penetrates through the semicircular grooves 8 to be connected with the threaded hole 7, the circumferential rotation of the flange plate 2 is limited, meanwhile, the bolt head and the limiting ring 3 are respectively positioned on two sides of the flange plate 2 in the thickness direction, and the axial displacement distance of the flange plate 2 is limited; when the adjacent pipelines 1 have no size error, bolts can be directly inserted between the adjacent flange plates 2, and the stable connection of the adjacent flange plates 2 is realized.

The implementation principle of the pipeline flange connecting structure in the embodiment of the application is as follows: firstly, sleeving the flange plate 2 on the pipeline 1, welding the limiting ring 3 at the end part of the pipeline 1, and then penetrating a limiting bolt through the semicircular groove 8 to be in threaded connection with the limiting ring 3 to realize the initial positioning of the flange plate 2; when installing pipeline 1, if when adjacent pipeline 1 had the error, then the spacing bolt of manual taking off ordered ring flange 2 and rotated or the slope, realized the alignment of adjacent ring flange 2, penetrated the bolt again between adjacent ring flange 2, realized the connection of ring flange 2, realized the stable connection of adjacent pipeline 1 simultaneously.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. The utility model provides a pipeline flange connection structure, includes ring flange (2), a plurality of through-holes that supply the bolt to pass are seted up along self circumference in ring flange (2), its characterized in that: still including being used for fixing spacing ring (3) at pipeline (1) terminal surface, spacing ring (3) external diameter is greater than the external diameter of pipeline (1), pipe (1) is gone up and relative pipeline (1) circumferential direction is cup jointed in ring flange (2), the internal diameter of ring flange (2) is less than the external diameter of spacing ring (3).

2. A pipe flange connection according to claim 1, wherein: the inner diameter of the flange plate (2) is larger than the outer diameter of the pipeline (1).

3. A pipe flange connection according to claim 2, wherein: one side of the limiting ring (3) far away from the end face of the pipeline (1) is connected with at least two groups of positioning columns (6), and the inner wall of the flange plate (2) is correspondingly provided with a semicircular groove (8) sleeved on the positioning columns (6).

4. A pipe flange connection according to claim 3, wherein: the positioning column (6) adopts a limiting bolt, and the limiting ring (3) is correspondingly provided with a threaded hole (7).

5. A pipe flange connection according to claim 1, wherein: the limiting ring (3) is flush with the end face of the pipeline (1), an annular groove (4) is formed in one side, away from the flange plate (2), of the limiting ring (3), and a sealing ring (5) is arranged in the annular groove (4).

6. A pipe flange connection according to claim 1, wherein: the through-hole of ring flange (2) sets up to waist type groove (9), and the length direction of waist type groove (9) and the radial parallel arrangement of ring flange (2).

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