CN204901129U - Socket joint connection mode internal flush corrugated steel pipe - Google Patents

Abstract

The utility model is a socket connection type inner flat corrugated steel pipe, which includes a trumpet-shaped socket, and is characterized in that it also includes a base pipe and a socket, the base pipe is composed of an outer wall and an inner wall, and the outer wall is rolled out. The steel plate with reinforced ribs, the outer wall ribs protrude outward and are fixed with the inner wall, and then the fixed outer wall and inner wall are welded and fixed with spiral rolling to form a cylindrical steel pipe with a spiral weld. The outer wall of the shaped steel pipe is spirally raised to form a base pipe with a corrugated outer wall and a smooth inner wall. The socket is composed of an outer pipe and an inner pipe. It is a cylindrical tube, the outer tube is sleeved on the inner tube, one end of the outer tube is fixedly connected to the inner tube, and the other end is welded and fixed to a flange flange, and the outer tube at the socket flange end is welded and fixed to the outer wall of the base tube. The inner pipe is welded and fixedly connected with the inner wall of the base pipe, and the small end of the trumpet-shaped socket is welded and fixedly connected with the base pipe.

Description

A socket connection type inner flat corrugated steel pipe

technical field

The utility model relates to a pipe connection, which is a socket connection type inner flat corrugated steel pipe.

Background technique

Pipeline transportation is a long-distance transport method of transporting liquid and gas materials using pipelines as a means of transportation. Transportation has the advantages of less energy consumption, low cost and good benefits. The pipe is the main component of the pipeline. The length of the pipe is 7 meters to 12 meters, and the diameter is 0.75 meters to 3 meters. There are several kinds of flange connection, welding and bonding, and socket connection is a convenient, fast, safe and efficient connection method in pipe connection. The invention patent application with the application date of October 16, 2014 and the application number 201410548040X discloses a steel pipe with a socket, which solves the problem that the socket connection is only suitable for cast iron pipes and reinforced concrete pipes, while the application date is 20150806 and the application number is 2015205851325 The patent application for a utility model discloses a socket-connected corrugated steel pipe with a flange, which also solves the installation problems of the steel pipe with a socket due to the large diameter, long size, thick wall and heavy weight of the steel pipe. The force is larger, and the equipment installed is also larger. The existing problem is: the disclosed corrugated steel pipe solves the problems of the wall thickness of the steel pipe and the heavy weight of the steel pipe, but the corrugated shape of the corrugated steel pipe has certain obstacles to the circulation of the fluid, which affects the flow velocity of the fluid and increases the pressure on the corrugated steel pipe. pressure on the pipe wall.

Contents of the invention

The technical problem to be solved by the utility model is: to overcome the shortcomings of the prior art, to provide a socket-connected inner flat corrugated steel pipe with a flat inner wall that can reduce the obstruction to fluid circulation, and a corrugated steel pipe with an outer wall that can reduce the weight of the pipe. , Practical and convenient, low cost and good fluidity.

The solution to the technical problem of the utility model is: a socket connection type inner flat corrugated steel pipe, which includes a trumpet-shaped socket, and the large end of the trumpet-shaped socket is welded and fixedly connected to a flange-type flange, and its characteristics are: It also includes a base pipe and a socket, the base pipe is composed of an outer wall and an inner wall, the outer wall is a steel plate with ribs rolled out, the inner wall is a flat steel plate, the outer wall ribs protrude outward and are fixedly connected with the inner wall, and then the fixed The outer wall and inner wall of the connection are welded by spiral rolling to form a cylindrical steel pipe with a spiral weld. The reinforcing ribs rolled out of the steel plate protrude in a spiral shape along the outer wall of the cylindrical steel pipe to form a base pipe with a corrugated outer wall and a smooth inner wall. The socket is composed of an outer tube and an inner tube, the outer tube of the socket is provided with at least two annular grooves for placing the sealing ring, the inner tube is a cylindrical tube, the outer tube is sleeved on the inner tube, and one end of the outer tube is connected to the inner tube. The inner pipe is fixedly connected, the other end is welded and fixedly connected to the flange flange, the outer pipe at the flange end of the socket is welded and fixedly connected to the outer wall of the base pipe, the inner pipe is welded to the inner wall of the base pipe, and the small end of the trumpet-shaped socket is connected to the The base pipe is welded and fixed.

The inner and outer surfaces of the socket connection type inner flat corrugated steel pipe are provided with plastic coatings.

The connection structure between the adjacent front inner flat corrugated steel pipe and the rear inner flat corrugated steel pipe is as follows: the socket of the front inner flat corrugated steel pipe is inserted into the bell-shaped socket of the rear inner flat corrugated steel pipe, and the sealing gasket is placed in the front inner flat corrugated steel pipe. Between the flanged flange of the flat corrugated steel pipe socket and the flanged flange of the rear inner flat corrugated steel pipe bell-shaped socket, the bolts pass through the flanged flange of the front inner flat corrugated steel pipe socket, the sealing washer and the rear The flanged flange and the end of the inner flat corrugated steel pipe horn-shaped socket are fixedly connected by nut thread connection, and the socket of the front inner flat corrugated steel pipe is connected with the trumpet-shaped socket of the rear inner flat corrugated steel pipe through the sealing ring set on it. Sealed contacts.

The beneficial effects of the utility model are: the strength of the spiral welded corrugated outer wall of the base pipe with spiral raised ribs is 6 times that of a steel pipe of the same thickness, the thickness of the steel plate is significantly reduced, and the weight of the steel pipe is significantly reduced. The inner wall of the flat steel plate can reduce the obstruction to the flow of fluid; the sealing gasket is placed between the flange flange of the front inner flat corrugated steel pipe socket and the flange flange of the rear inner flat corrugated steel pipe bell-shaped socket, and bolted The flexible structure of the threaded connection can not only control the axial clearance during installation, but also ensure that the pipeline can move axially within a certain range without leakage, and can also prevent radial displacement between the socket and the socket. When the pipe is raised to heat up, it can prevent the pipe from being bulged, and when the ambient temperature is lowered and the pipe is cold-shrunk, it can prevent the pipe from shrinking and causing a gap to leak. It has the advantages of simple structure, practicality, low cost, and good fluidity. .

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the connection structure of the present invention.

In the figure: 1 socket, 2 inner pipe, 3 outer pipe, 4 flanged flange, 5 base pipe, 6 inner wall, 7 outer wall, 8 bell-shaped socket, 9 flanged flange, 10 rear corrugated steel pipe, 11 Sealing ring, 12 bolts, 13 sealing washers, 14 nuts, 15 front inner flat corrugated steel pipes.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1-Fig. 2, the utility model is a socket connection type inner flat corrugated steel pipe, which includes a trumpet-shaped socket 8, the large end of the trumpet-shaped socket 8 is welded and fixedly connected to a flange-type flange 9, and Including a base pipe 5 and a socket 1, the base pipe 5 is composed of an outer wall 7 and an inner wall 6, the outer wall 7 is a steel plate rolled out with reinforcement ribs, the inner wall 6 is a flat steel plate, and the reinforcement ribs of the outer wall 7 protrude outward and The inner wall 6 is fixed, and then the fixed outer wall 7 and the inner wall 6 are welded and fixed by spiral rolling to form a cylindrical steel pipe with a spiral weld. A base pipe 5 with a corrugated outer wall 7 and a smooth inner wall 6 is formed. The socket 1 is composed of an outer pipe 3 and an inner pipe 2. The outer pipe 3 of the socket 1 is provided with at least two annular grooves for arranging the sealing ring 11, the inner The tube 2 is a cylindrical tube, the outer tube 3 is sleeved on the inner tube 2, one end of the outer tube 3 is fixedly connected to the inner tube 2, and the other end is welded and fixed to the flange flange 4, and the outer tube 3 at the flange end of the socket 1 It is welded and fixedly connected with the outer wall 7 of the base pipe 5 , the inner pipe 2 is welded and fixedly connected with the inner wall 6 of the base pipe 5 , and the small end of the trumpet-shaped socket 8 is welded and fixedly connected with the base pipe 5 . The inner and outer surfaces of the socket connection type inner flat corrugated steel pipe are provided with plastic coatings.

The connection structure between the adjacent front inner flat corrugated steel pipe 15 and the rear inner flat corrugated steel pipe 10 is: the socket 1 of the front inner flat corrugated steel pipe 15 is inserted into the horn-shaped socket 8 of the rear inner flat corrugated steel pipe 10 , the sealing gasket 13 is placed between the flange flange 4 of the socket 1 of the front inner flat corrugated steel pipe 15 and the flange flange 9 of the rear inner flat corrugated steel pipe 10 trumpet-shaped socket 8, and the bolt 12 passes through the front inner The flanged flange 4 of flat corrugated steel pipe 15 socket 1, the gasket 13 and the flanged flange 9 of the flat corrugated steel pipe 10 trumpet-shaped socket 8 in the back, the end is fixedly connected with nut 14 threaded connection, and the front inner The socket 1 of the flat corrugated steel pipe 15 is in sealing contact with the trumpet-shaped socket 8 of the rear inner flat corrugated steel pipe 10 through the sealing ring 11 provided thereon. The utility model adopts prior art manufacture, and described bolt 12, nut 14 are commercially available products of prior art.

The utility model is not limited to this specific embodiment, and for those skilled in the art, simple duplication and improvement without creative work all belong to the protection scope of the claims of the utility model.

Claims (3)

1. flat corrugated steel tube in a socket joint jointing type, it comprises horn-like bellmouth, the large end welding of described horn-like bellmouth is connected flange-type flange, it is characterized in that: also comprise base tube and socket, described base tube is made up of outer wall and inwall, described outer wall is the steel plate that roll-in goes out stiffening rib, described inwall is plain plate, outer wall stiffening rib convex outwards and inwall be connected, then the outer wall be connected and inwall are rolled the steel cylindrical tube of welding the formation spirality weld bond that is connected with spiral, it is corrugated that the stiffening rib that steel plate roll-in goes out convexes to form outer wall twist along steel cylindrical tube outer wall, the base tube of interior walls be smooth, described socket is made up of outer tube and interior pipe, the outer tube of socket arranges at least two for settling the annular groove of seal ring, interior pipe is cylindrical tube, outer tube sleeve connects on inner pipe, one end and the interior pipe of outer tube are connected, the other end welds the flange-type flange that is connected, the outer tube of socket flange end welds with the outer wall of base tube and is connected, interior pipe welds with the inwall of base tube and is connected, the small end of horn-like bellmouth welds with base tube and is connected.

2. flat corrugated steel tube in a kind of socket joint jointing type as claimed in claim 1, is characterized in that: in described socket joint jointing type, the inside and outside surface of flat corrugated steel tube all arranges plastic coating.

3. flat corrugated steel tube in a kind of socket joint jointing type as claimed in claim 1, it is characterized in that: the linkage structure of adjacent front interior flat corrugated steel tube and rear interior flat corrugated steel tube is: in before described the socket of flat corrugated steel tube interior flat corrugated steel tube after installing and inserting horn-like bellmouth in, between the flange-type flange that seal washer is placed in front interior flat corrugated steel tube socket and the flange-type flange of the horn-like bellmouth of rear interior flat corrugated steel tube, bolt is simultaneously through the flange-type flange of front interior flat corrugated steel tube socket, the flange-type flange of seal washer and the horn-like bellmouth of rear interior flat corrugated steel tube, termination is connected with nut thread connection, in front, the socket of flat corrugated steel tube is sealed with the horn-like bellmouth of rear interior flat corrugated steel tube by the seal ring that it is arranged and contacts.