CN202032227U

CN202032227U - Electromagnetic fusion connecting structure for steel-lined plastic composite pipe

Info

Publication number: CN202032227U
Application number: CN201120034192XU
Authority: CN
Inventors: 徐焕松; 王鹊鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-01-31
Filing date: 2011-01-31
Publication date: 2011-11-09
Anticipated expiration: 2021-01-31

Abstract

The utility model discloses an electromagnetic fusion connecting structure for a steel-lined plastic composite pipe, which belongs to a pipeline connecting structure and solves the problems that the threaded connection part of an existing steel-lined plastic composite pipe is easy to leak and corrode, the leakage is difficult to repair and the connected pipeline has short service life. In the utility model, the steel-lined plastic composite pipe is inserted into an annular socket joint of a pipe fitting, the outer steel layer of the steel-lined plastic composite pipe is in threaded connection with the outer steel layer of the pipe fitting, and the inner plastic layer of the steel-lined plastic composite pipe is in fusion connection with the inner plastic layer of the pipe fitting. The outer steel layer of the steel-lined plastic composite pipe is in threaded connection with the outer steel layer of the pipe fitting to ensure the connection strength, and the inner plastic layer of the steel-lined plastic composite pipe is in fusion connection with the inner plastic layer of the pipe fitting to ensure the sealing effect as well as prevent leakage and corrosion caused by the leakage.

Description

Steel lining plastic composite electromagnetism melts linkage structure

Technical field

The utility model belongs to pipe connecting structure, specifically is that a kind of heat that produces by electromagnetic field is realized the pipe connecting structure that the steel lining plastic composite is connected with pipe fitting.

Background technique

Existing steel lining plastic composite and pipe fitting are many, and threaded connection place easy to leak and perishable is difficult for when seepage occurring remedying by being threaded, and the pipeline life that connects into is short.

Summary of the invention

The technical assignment of the technical problems to be solved in the utility model and proposition is to overcome the threaded connection place easy to leak of existing steel lining plastic composite and perishable, be difficult for remedying when seepage occurring, the defective that the pipeline life that connects into is short provides a kind of steel lining plastic composite electromagnetism to melt linkage structure.

Realize the purpose of this utility model for this reason, the utility model adopts following technical proposals: steel lining plastic composite electromagnetism melts linkage structure, comprise steel lining plastic composite and pipe fitting, described steel lining plastic composite is made of the outer steel layer and the inner plastic layer that are combined with each other, the connecting end that described pipe fitting constitutes and have at least two connections by outer steel layer that is combined with each other and inner plastic layer, the outer steel layer of at least one connecting end, inner plastic layer is shaped on external annulus respectively, internal ring wall also forms the ring-type birdsmouth between described external annulus and internal ring wall, it is characterized in that: described steel lining plastic composite inserts in the described ring-type birdsmouth, the outer steel layer of described steel lining plastic composite and the outer steel layer of described pipe fitting are by being threaded the internal ring wall welding of the inner plastic layer of described steel lining plastic composite and described pipe fitting.

As the optimization technique measure, the outer surface of described internal ring wall is made the bigger conical surface of less, the inner diameter of outer end diameter, and the mouth of pipe inwall of described steel lining plastic composite is made the enlarging that cooperates with this conical surface.

As the optimization technique measure, the port inner wall of described external annulus is made enlarging.

The beneficial effects of the utility model are: the outer steel layer of steel lining plastic composite guarantees join strength with the outer steel layer of pipe fitting by being threaded, the inner plastic layer welding of the inner plastic layer of steel lining plastic composite and pipe fitting guarantees that sealing effect prevents seepage and the corrosion that is caused by seepage.This linkage structure, elder generation inserts the steel lining plastic composite in the birdsmouth of pipe fitting when implementing to connect, and again plugging position is implemented electromagnetic induction heating and realizes welding, easy to implement and realization sealing; Cause leaking if the welding quality is not good or when seeping water, can be once more to plugging position heating enforcing remedies; This linkage structure does not need pipe fitting, pipe are carried out special structural design, is applicable to the steel lining plastic composite of all size and the welding of pipe fitting.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is the schematic representation before pipe fitting of the present utility model is connected with the steel lining plastic composite.

The number in the figure explanation:

1-steel lining plastic composite, the outer steel layer of 11-steel lining plastic composite, the inner plastic layer of 12-steel lining plastic composite, the enlarging of the 13-steel lining plastic composite mouth of pipe;

The 2-pipe fitting, the outer steel layer of 21-pipe fitting, the inner plastic layer of 22-pipe fitting, 23-connecting end, 24-external annulus, 25-internal ring wall, 26-birdsmouth, the conical surface of 27-internal ring wall, the enlarging of 28-external annulus port;

The 3-electromagnetic induction heater;

The 4-sealing material.

Embodiment

Below in conjunction with Figure of description the utility model is described further.

Steel lining plastic composite electromagnetism of the present utility model melts linkage structure, as shown in Figure 1, it comprises steel lining plastic composite 1 and pipe fitting 2, steel lining plastic composite 1(is referring to Fig. 2) constitute by the outer steel layer 11 and the inner plastic layer 12 that are combined with each other, pipe fitting 2(is referring to Fig. 2) constitute and connecting end 23(with at least two connections is illustrated as an elbow by outer steel layer 21 that is combined with each other and inner plastic layer 22, it has two connecting ends, can be tee pipe fitting during concrete enforcement, structural types such as four-way pipe fitting), the outer steel layer of at least one connecting end, inner plastic layer is shaped on external annulus 24 respectively, internal ring wall 25 also forms ring-type birdsmouth 26 between external annulus 24 and internal ring wall 25, steel lining plastic composite 1 inserts in the ring-type birdsmouth 26, the outer steel layer 11 of steel lining plastic composite 1 (is made outside thread on the outer steel layer 11 of steel lining plastic composite 1 with the outer steel layer 21 of pipe fitting 2 by screw thread, make internal thread on the outer steel layer 21 of pipe fitting 2) connect the inner plastic layer 12 of steel lining plastic composite 1 and internal ring wall 25 weldings of pipe fitting 1.

When concrete enforcement connects, screw the outer steel layer 11 that steel lining plastic composite 1 and pipe fitting 1 make the steel lining plastic composite as shown in Figure 1 relatively and realize by being threaded that with the outer steel layer 21 of pipe fitting steel lining plastic composite 1 inserts in the birdsmouth 26 of pipe fitting, produce heats with the inner plastic layer 12 of steel lining plastic composite and internal ring wall 25 weldings of pipe fitting with electromagnetic induction heater 3 from the outside of plugging position to the outer steel layer 21 that plugging position applies outer steel layer 11 that magnetic field makes the steel lining plastic composite and pipe fitting afterwards.Thereby guarantee join strength by being threaded, guarantee that by the inner plastic layer of steel lining plastic composite and the inner plastic layer welding of pipe fitting sealing effect prevents seepage and the corrosion that is caused by seepage.

Owing to be earlier steel lining plastic composite 1 to be inserted in the birdsmouth 26 of pipe fitting when implementing this linkage structure, again plugging position is implemented induction heating and realize welding, easy to implement and realization seals, and especially is beneficial to some occasions that are unfavorable for the application of force in high-altitude, narrow space etc. and implements; Simultaneously, do not need pipe fitting, pipe are done special structural change,, can also omit the structure that is used for exhaust, holds molten knurl, be easy to make with respect to the method for pegging graft behind the hot melt; Be applicable to the steel lining plastic composite of all size and the welding of pipe fitting; Cause seepage if the welding quality is not good, can will heat enforcing remedies to plugging position once more after the media discharge of inside.

As further improving and replenishing to technique scheme, the utility model also comprises following additional technical characteristics, though Fig. 1,2 has comprised following all additional technical features, it is preferred embodiment of the present utility model, but the utility model is not limited to this situation, according to specifically acting on they is selected for use on the described technological scheme of epimere when implementing the utility model.

The outer surface of internal ring wall 25 is made the bigger conical surface 27 of less, the inner diameter of outer end diameter, and the mouth of pipe inwall of steel lining plastic composite 1 is made the enlarging 13 that cooperates with this conical surface 27.Thereby screwing outer steel layer that steel lining plastic composite 1 and pipe fitting 2 make the steel lining plastic composite and the outer steel layer of pipe fitting relatively when realizing that by being threaded the steel lining plastic composite inserts in the birdsmouth 26 of pipe fitting, the outer surface that guarantees internal ring wall can fully contact with the mouth of pipe inwall of steel lining plastic composite, is beneficial to and after this is subjected to thermal fusion welding.

The port inner wall of external annulus 24 is made enlarging 28.Thus when connecting, be used for sealing material 4(such as raw meal belt on the screw thread that is wrapped in the steel lining plastic composite of leakproof) can be taken in by this enlarging 28, thus the aggressive medium in the external world is isolated with inboard connecting thread, avoid the threaded connection place to be corroded.Further, enlarging can be pushed the sealing material of taking in, and strengthens the isolation effect of aggressive medium to external world.

Claims

1. steel lining plastic composite electromagnetism melts linkage structure, comprise steel lining plastic composite (1) and pipe fitting (2), described steel lining plastic composite (1) is made of outer steel layer (11) that is combined with each other and inner plastic layer (12), described pipe fitting (2) is constituted and is had the connecting end (23) of at least two connections by outer steel layer (21) that is combined with each other and inner plastic layer (22), the outer steel layer of at least one connecting end, inner plastic layer is shaped on external annulus (24) respectively, internal ring wall (25) also forms ring-type birdsmouth (26) between described external annulus (24) and internal ring wall (25), it is characterized in that: described steel lining plastic composite (1) inserts in the described ring-type birdsmouth (26), the outer steel layer (11) of described steel lining plastic composite and the outer steel layer (21) of described pipe fitting are by being threaded interior plastics (12) layer of described steel lining plastic composite and internal ring wall (25) welding of described pipe fitting.

2. steel lining plastic composite electromagnetism according to claim 1 melts linkage structure, it is characterized in that: the outer surface of described internal ring wall (25) is made the bigger conical surface (27) of less, the inner diameter of outer end diameter, and the mouth of pipe inwall of described steel lining plastic composite (1) is made the enlarging (13) that cooperates with this conical surface (27).

3. steel lining plastic composite electromagnetism according to claim 1 melts linkage structure, and it is characterized in that: the port inner wall of described external annulus (24) is made enlarging (28).