CN215334908U

CN215334908U - Internal flat wall external spiral reinforcing rib welded composite steel pipe for gas drainage in coal mine

Info

Publication number: CN215334908U
Application number: CN202120391990.1U
Authority: CN
Inventors: 王付荣; 陈勇亮
Original assignee: Shanxi Zhongtong Pipe Co ltd
Current assignee: Shanxi Zhongtong Pipe Co ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-12-28
Anticipated expiration: 2031-02-22

Abstract

The utility model belongs to the technical field of pipes, and particularly relates to an inner flat wall outer spiral reinforcing rib welded composite steel pipe for gas drainage in a coal mine. According to the utility model, the first reinforcing rib and the second reinforcing rib are arranged on the pipe body, and the first reinforcing rib and the second reinforcing rib are spirally crossed, so that the pressure resistance of the pipe body is greatly increased, and the toughness of the pipe body is increased.

Description

Internal flat wall external spiral reinforcing rib welded composite steel pipe for gas drainage in coal mine

Technical Field

The utility model belongs to the technical field of pipes, and particularly relates to an inner flat wall outer spiral reinforcing rib welded composite steel pipe for gas drainage in a coal mine.

Background

The known coal mine gas drainage pipe comprises: common steel pipes are most commonly used, and in order to ensure that the pipeline has certain strength, the steel pipes must have certain thickness, are heavy and are inconvenient to construct; the gas drainage pipe is made of glass fiber reinforced plastic for underground coal mine, polyethylene for underground coal mine, steel skeleton polyethylene for underground coal mine, etc. If the wall thickness of the pipelines is thick, the dead weight is heavy, and the construction is inconvenient; if the wall is thin, the wall is easy to deform, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides an inner flat wall external spiral reinforcing rib welded composite steel pipe for gas drainage in a coal mine.

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

the utility model provides a colliery is taken out and is put outer spiral strengthening rib welding composite steel pipe of internal flat wall for gas, includes the body the both ends of body all are provided with the flange dish of connecting, the body is formed by the mutual interlock spiral welding in steel sheet both sides, and wherein one side of steel sheet upwards arches and forms the recess, the another side have incurve and with recess shape matched with turn-ups structure, the mutual interlock spiral welding in both sides forms a strengthening rib still spiral welding is provided with No. two strengthening ribs on the body outer wall, a strengthening rib and No. two strengthening ribs are spiral cross arrangement.

Further, an inner lining pipe is arranged inside the pipe body to ensure the flatness of the inner wall of the composite steel pipe.

And furthermore, anticorrosive layers are arranged on the outer wall of the pipe body and the inner wall of the lining pipe.

Furthermore, the anticorrosive coating is any one of a polyethylene layer, an epoxy resin layer, an anticorrosive paint layer or a zinc coating.

Furthermore, the cross sections of the first reinforcing rib and the second reinforcing rib are semicircular, so that spiral crossing is better realized.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, the first reinforcing rib and the second reinforcing rib are arranged on the pipe body, and the first reinforcing rib and the second reinforcing rib are spirally crossed, so that the pressure resistance of the pipe body is greatly increased, and the toughness of the pipe body is increased;

2. the anti-corrosion layer is arranged on the inner wall and the outer wall of the pipe body, so that the anti-corrosion performance of the pipe body is improved, and the service life of the pipe body is prolonged;

3. the lining pipe is arranged in the pipe body, so that the flatness of the inner wall can be ensured, coal dust is not easy to adsorb, and the wind resistance of pumping and discharging coal bed gas is reduced, thereby reducing energy consumption.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

in the figure, a pipe body-1, a connecting flange-2, a first reinforcing rib-3, a second reinforcing rib-4, an anticorrosive coating-5 and a lining pipe-6.

Detailed Description

In order to further illustrate the technical solution of the present invention, the present invention is further illustrated by the following examples.

As shown in fig. 1 and 2, the composite steel pipe welded by the external spiral reinforcing ribs on the inner flat wall for gas drainage in the coal mine comprises a pipe body 1, connecting flange plates 2 are arranged at two ends of the pipe body 1, the pipe body 1 is formed by spirally welding two sides of a steel plate in an engaged manner, one side of the steel plate is arched upwards to form a groove, the other side of the steel plate is provided with a flanging structure which is bent inwards and matched with the shape of the groove, the two sides of the steel plate are spirally welded in an engaged manner to form a first reinforcing rib 3, a second reinforcing rib 4 is spirally welded on the outer wall of the pipe body 1, the first reinforcing rib 3 and the second reinforcing rib 4 are spirally crossed, and the cross sections of the first reinforcing rib 3 and the second reinforcing rib 4 are semicircular, so that spiral crossing is better realized; the inside of body 1 is provided with interior bushing 6 to guarantee the level and smooth of compound steel pipe inner wall all be provided with anticorrosive coating 5 on the outer wall of body 1 and the inner wall of interior bushing 6, anticorrosive coating 5 is any one in polyethylene layer, epoxy layer, anticorrosive paint layer or the galvanizing coat.

While there have been shown and described what are at present considered to be the essential features and advantages of the utility model, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The inner flat wall outer spiral reinforcing rib welded composite steel pipe for gas drainage in the coal mine is characterized by comprising a pipe body (1), connecting flange discs (2) are arranged at two ends of the pipe body (1), the pipe body (1) is formed by mutually meshing and spirally welding two sides of a steel plate, one side of the steel plate is upwards arched to form a groove, the other side of the steel plate is provided with a flanging structure which is inwards bent and matched with the shape of the groove, the mutually meshing and spirally welding two sides of the steel plate form a first reinforcing rib (3), a second reinforcing rib (4) is further spirally welded on the outer wall of the pipe body (1), and the first reinforcing rib (3) and the second reinforcing rib (4) are spirally and alternately arranged.

2. The internal flat wall external spiral reinforcing rib welded composite steel pipe for gas drainage in the coal mine is characterized in that an internal lining pipe (6) is arranged inside the pipe body (1) to ensure the flatness of the internal wall of the composite steel pipe.

3. The internal flat wall external spiral reinforcing rib welded composite steel pipe for gas drainage in the coal mine is characterized in that an anticorrosive layer (5) is arranged on the outer wall of the pipe body (1) and the inner wall of the lining pipe (6).

4. The internal flat wall external spiral reinforcing rib welded composite steel pipe for gas drainage in coal mines as set forth in claim 3, wherein the anticorrosive layer (5) is any one of a polyethylene layer, an epoxy resin layer, an anticorrosive paint layer or a zinc coating.

5. The internal flat wall external spiral reinforcing rib welded composite steel pipe for gas drainage in coal mines as set forth in claim 1, wherein the cross sections of the first reinforcing rib (3) and the second reinforcing rib (4) are semicircular to better realize spiral crossing.