Friction welding type oil pipe structure

Abstract

The utility model provides a friction welding type oil pipe structure, which belongs to the field of oil-gas field development and comprises a first oil pipe and a second oil pipe. A connection structure; the connecting structure comprises a connecting sleeve which is arranged outside the first oil pipe in a sleeving mode and fixedly connected with the first oil pipe, the inner wall of the connecting sleeve is fixedly connected with a connecting pipe communicated with the first oil pipe, an annular cavity is formed between the connecting pipe and the connecting sleeve, and the second oil pipe is sleeved with a fixing sleeve fixedly connected with the second oil pipe. A connecting ring matched with the annular cavity is fixed to the fixing sleeve, friction hot melting between the connecting ring and the connecting sleeve can enter the annular groove, and a fixing ring is fixedly connected to the inner wall of the connecting ring. The first oil pipe and the second oil pipe are connected in a three-layer friction welding mode, so that connection of the first oil pipe and the second oil pipe is more stable, coaxial welding of the first oil pipe and the second oil pipe can be guaranteed without adjusting the first oil pipe and the second oil pipe, welding efficiency is improved, and welding quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil and gas field development technical field especially relates to a friction welding type oil pipe structure. BACKGROUND

[0002] Friction welding is the method that friction heat generated between thermoplastic plastics is used to make it melt in the friction surface, and then press, and make it weld under the pressure after cooling.

[0003] The current oil pipe part is connected through the mode of friction welding, and one oil pipe needs to be fixed during welding, and then another oil pipe is high-speed rotated and abuts against the fixed oil pipe, but the rotating oil pipe needs to be adjusted for many times before welding to ensure that the two oil pipes are coaxial, and the possibility of deviation exists when high-speed rotating, which leads to poor coaxiality after welding, therefore, the utility model provides a friction welding type oil pipe structure. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a friction welding type oil pipe structure.

[0005] The embodiment of the utility model provides a friction welding type oil pipe structure, which comprises:

[0006] The first oil pipe, the second oil pipe, the connecting structure, the connecting pipe, the connecting ring and the fixed ring.

[0007] The connecting structure comprises a connecting sleeve sleeved on the outside of the first oil pipe and fixedly connected with it, the inner wall of the connecting sleeve is fixedly connected with a connecting pipe communicated with the first oil pipe, the connecting pipe and the connecting sleeve form an annular cavity, the inner wall of the connecting sleeve and the outer wall of the connecting pipe are all provided with an annular groove, the outside of the second oil pipe is sleeved with a fixed sleeve fixedly connected with it, the fixed sleeve is fixedly provided with a connecting ring matched with the annular cavity, the connecting ring and the connecting sleeve can be frictionally hot-melted into the annular groove, and the inner wall of the connecting ring is fixedly connected with a fixed ring.

[0008] Further, the connecting sleeve and the fixed sleeve are coaxially and oppositely arranged, and the thickness of the connecting sleeve is same with that of the fixed sleeve.

[0009] Further, the fixed ring and the connecting pipe are coaxially and oppositely arranged, and the thickness of the fixed ring is same with that of the connecting pipe.

[0010] Further, when the connecting sleeve and the fixed sleeve abut against each other, the fixed ring and the connecting pipe abut against each other, and the connecting ring and the connecting sleeve abut against each other.

[0011] Further, the connecting sleeve comprises a first ring body and a second ring body, the first ring body is fixed on the first oil pipe and coaxially arranged, and the second ring body is fixed on the first ring body and coaxially arranged.

[0012] Further, the connecting ring and the fixing ring are communicated with the second oil pipe.

[0013] Compared with the prior art, the utility model has the advantages of:

[0014] The first oil pipe and the second oil pipe are connected more stably through the three-layer friction welding mode, and coaxial welding of the first oil pipe and the second oil pipe can be ensured without adjusting the first oil pipe and the second oil pipe, welding efficiency is improved, and welding quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the friction welding type oil pipe structure.

[0016] Figure 2 It is a schematic view of the first oil pipe in the friction welding type oil pipe structure.

[0017] Figure 3 It is a sectional view of the connecting sleeve in the friction welding type oil pipe structure.

[0018] Figure 4 It is an exploded view of the friction welding type oil pipe structure.

[0019] In the above drawings, 1 is the first oil pipe, 2 is the second oil pipe, 3 is the connecting sleeve, 4 is the fixing sleeve, 5 is the connecting pipe, 6 is the annular cavity, 7 is the annular groove, 8 is the connecting ring, and 9 is the fixing ring. DETAILED DESCRIPTION

[0020] The technical scheme in the utility model will be further described below in combination with the drawings and embodiments.

[0021] It should be noted that the terms "first", "second" and the like in the specification and claims of the application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind, and the number of objects is not limited, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0022] For example, Figures 1-4The utility model discloses a friction welding type oil pipe structure, including:

[0023] First oil pipe 1, second oil pipe 2;

[0024] Connecting structure;Connecting structure includes the connecting sleeve 3 of being covered in the first oil pipe 1 outside and with fixed connection, the inner wall fixed connection of connecting sleeve 3 has with the connecting pipe 5 of first oil pipe 1 intercommunication, and connecting sleeve 3 includes first ring body, second ring body, and first ring body is fixed on first oil pipe 1 and coaxial arrangement, and second ring body is fixed on first ring body and coaxial arrangement, and connecting pipe 5 is fixed on second ring body, so Figure 4 As shown.

[0025] Connecting pipe 5 and connecting sleeve 3 form annular cavity 6 between, and the outer wall of connecting pipe 5 is equipped with annular groove 7, and the outside of second oil pipe 2 is equipped with with fixed connection fixed sleeve 4, and connecting sleeve 3 and fixed sleeve 4 coaxial opposite arrangement, and the thickness of connecting sleeve 3 is same with the thickness of fixed sleeve 4.

[0026] Fixed sleeve 4 is fixed with the connecting ring 8 of cooperation with annular cavity 6, and the connecting ring 8 here does not abut with annular cavity 6 inner wall, so that the friction between the two will not be generated;Connecting sleeve 3 and fixed sleeve 4 abut, fixed ring 9 and connecting pipe 5 abut, connecting ring 8 and connecting sleeve 3 abut, and the friction heat melting between connecting ring 8 and connecting sleeve 3 can enter into annular groove 7, and the inner wall fixed connection of connecting ring 8 is equipped with fixed ring 9, and connecting ring 8, fixed ring 9 and second oil pipe 2 intercommunication, and fixed ring 9 and connecting pipe 5 coaxial opposite arrangement, and the thickness of fixed ring 9 is same with the thickness of connecting pipe 5.

[0027] The fixed connection in above-mentioned is through welding connection.

[0028] When carrying out friction welding, first oil pipe 1 or second oil pipe 2 is fixed, connecting ring 8 is extended into annular cavity 6, then first oil pipe 1 and second oil pipe 2 are relatively moved until it is not movable, so that the coaxiality of first oil pipe 1 and second oil pipe 2 can be ensured;

[0029] Then first oil pipe 1 or second oil pipe 2 is clamped and fixed and is rotated, at this time, friction occurs between connecting sleeve 3 and fixed sleeve 4, friction occurs between connecting ring 8 and second oil pipe 2, and friction occurs between connecting pipe 5 and fixed ring 9, the friction surface is melted by heat, and after being pressurized and cooled, first oil pipe 1 and second oil pipe 2 can be connected together, at this time, connecting ring 8 is melted by friction and extends into annular groove 7 due to centrifugal force, so that the limiting effect of connecting ring 8 can be further improved.

[0030] Through the three-layer friction welding mode, first oil pipe 1 and second oil pipe 2 are connected more stably, and the coaxiality of first oil pipe 1 and second oil pipe 2 can be ensured without adjusting first oil pipe 1 and second oil pipe 2, the welding efficiency is improved, and the welding quality is ensured.

[0031] Finally, it is pointed out that the above examples are merely to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A friction welded tubing structure characterized by, The utility model relates to a kind of oil pipe connecting structure, including: First oil pipe (1), second oil pipe (2); Connecting structure;The connecting structure includes the connecting sleeve (3) being sleeved outside first oil pipe (1) and being fixedly connected with it, the inner wall of the connecting sleeve (3) is fixedly connected with the connecting pipe (5) being communicated with first oil pipe (1), annular cavity (6) is formed between the connecting pipe (5) and connecting sleeve (3), the inner wall of the connecting sleeve (3), the outer wall of connecting pipe (5) are each equipped with annular groove (7), the outside of second oil pipe (2) is equipped with the fixed sleeve (4) being fixedly connected with it, the fixed sleeve (4) is fixed with the connecting ring (8) being cooperated with annular cavity (6), the connecting ring (8) and connecting sleeve (3) between friction heat melting can be entered into annular groove (7), the inner wall of the connecting ring (8) is fixedly connected with fixed ring (9).

2. A friction welding tubing structure as defined in claim 1 wherein, Wherein: The connecting sleeve (3) and fixed sleeve (4) are coaxially arranged, and the thickness of the connecting sleeve (3) is the same as the thickness of the fixed sleeve (4).

3. A friction welding tubing structure as defined in claim 1 wherein, Wherein: The fixed ring (9) and the connecting pipe (5) are coaxially arranged, and the thickness of the fixed ring (9) is the same as the thickness of the connecting pipe (5).

4. A friction welding tubing structure as defined in claim 1 wherein, Wherein: When the connecting sleeve (3) and the fixed sleeve (4) abut, the fixed ring (9) and the connecting pipe (5) abut, and the connecting ring (8) and the connecting sleeve (3) abut.

5. A friction welding tubing structure as defined in claim 1 wherein, Wherein: The connecting sleeve (3) includes a first ring body and a second ring body, the first ring body is fixed on the first oil pipe (1) and coaxially arranged, and the second ring body is fixed on the first ring body and coaxially arranged.

6. A friction welding tubing structure as defined in claim 1 wherein, Wherein: The connecting ring (8) and the fixed ring (9) are communicated with the second oil pipe (2).

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