Oil field development water injection pipe with butt joint structure easy to maintain

Abstract

The utility model relates to the technical field of water injection pipes, in particular to a water injection pipe provided with a butt joint structure easy to maintain and used for oilfield development. The reinforcing ring is arranged and fixed to the end of the connector body in a sleeving mode, and the pipeline body is inserted into the reinforcing ring. The limiting ring sleeves and is fixed on the pipeline body, and the limiting ring is in contact with the reinforcing ring; the pipeline body is movably sleeved with the movable frame, the movable frame is arranged on the side, away from the reinforcing ring, of the limiting ring in a contact mode, and the reinforcing ring is slidably sleeved with the open end of the movable frame through a sliding pair; the positioning ring sleeves and is fixed on the reinforcing ring, and the positioning ring is arranged on the left side of the movable frame in a contact manner; the reinforcing ring is movably sleeved with the locking frame, the locking frame is arranged on the left side of the positioning ring in a contact mode, and the movable frame is sleeved with the open end of the locking frame in a screwed mode through threads. On the basis of threaded connection, a connecting and fastening structure is added to enhance the connection between the pipeline and the joint, so that the pipeline and the joint cannot be separated, and the pipeline and the joint are more stable in use.

Description

TECHNICAL FIELD

[0001] The utility model relates to water injection pipe technical field, concretely relates to a water injection pipe for oilfield development with easy maintenance butt joint structure. BACKGROUND

[0002] In the oilfield development, water injection is the important means of maintaining oil layer pressure, keeping oilfield stable production. Through water injection, formation energy can be supplemented, oil layer pressure can be prevented from falling, thereby keeping the yield of oil well stable, in the high pressure water injection pipeline for oilfield disclosed in patent publication No. CN104613256A, wherein the transition joint is assembled to the butt joint end of the pipeline body and the equipment interface, the transition joint is low carbon steel or low alloy steel thick wall pipe joint, the transition joint and the pipeline body connection end are respectively processed with conical internal thread and conical external thread, the transition joint and the pipeline body are connected through the conical external thread and the conical internal thread, only the threaded connection is used to connect the pipeline and the joint in the above patent, and there is no reinforcing connection structure, and the connection between the pipeline and the joint is prone to loosening in the process of use. SUMMARY

[0003] The utility model discloses a water injection pipe for oilfield development with easy maintenance butt joint structure, which is simple in structure, reasonable in design and convenient to use, can increase the connection fastening structure on the basis of threaded connection, strengthen the connection between the pipeline and the joint, prevent the pipeline and the joint from separating, and is more stable in use.

[0004] To achieve the above object, the utility model adopts the following technical scheme: it contains pipeline body and joint body, one end of the pipeline body is provided with the joint body, the end of the pipeline body is provided with a threaded groove, the inner end of the joint body is fixedly provided with a threaded ring, and the threaded ring is arranged in the threaded groove through threaded connection, and it further contains:

[0005] The reinforcing ring is sleeved and fixed on the end of the joint body, and the pipeline body is inserted on the reinforcing ring,

[0006] The limiting ring is sleeved and fixed on the pipeline body, and the limiting ring is in contact with the reinforcing ring,

[0007] The movable frame is movably sleeved on the pipeline body, and the movable frame is in contact with the side, away from the reinforcing ring, of the limiting ring, and the open end of the movable frame is movably sleeved on the reinforcing ring through the sliding pair,

[0008] The positioning ring is sleeved and fixed on the reinforcing ring, and the positioning ring is in contact with the left side of the movable frame,

[0009] The locking frame is movably sleeved on the reinforcing ring, and the locking frame is in contact with the left side of the positioning ring; the open end of the locking frame is movably sleeved on the movable frame through screwing;

[0010] Through the technical scheme, the locking frame is locked on the movable frame, so that the movable frame is fixed on the reinforcing ring, and the pipe body and the joint body are stable.

[0011] As a further improvement of the utility model, the outer diameter of the positioning ring is smaller than the outer diameter of the movable frame.

[0012] Through the technical scheme, the locking frame is rotatably screwed on the movable frame.

[0013] As a further improvement of the utility model, the outer wall of the limiting ring is provided with a plurality of insertion holes distributed at equal fillets, and the inner wall of the movable frame is provided with a plurality of insertion rods fixedly arranged at equal fillets, and the insertion rods are inserted into the insertion holes.

[0014] Through the technical scheme, the movable frame is positioned.

[0015] As a further improvement of the utility model, the outer wall of the limiting ring is provided with a plurality of connection frames fixedly arranged at equal angles, and the connection frames are provided in an "L" shape; the connection frames are arranged on the left side of the locking frame; the movable frame is movably sleeved with a supporting ring on the outer side, and the supporting ring is arranged on the right side of the locking frame; the supporting ring is connected with the horizontal end of the connection frame; a plurality of pressing components are arranged between the supporting ring and the movable frame, and the plurality of pressing components are arranged at equal angles.

[0016] Through the technical scheme, the connection frame supports the supporting ring, and the supporting ring and the movable frame are connected through the pressing components to press and position the movable frame.

[0017] As a further improvement of the utility model, the pressing component comprises:

[0018] The fixed screw rod is fixedly arranged on the inner wall of the supporting ring.

[0019] The threaded pipe is movably sleeved on the fixed screw rod through screwing.

[0020] The pressing table is inserted into the circular groove arranged on the outer wall of the movable frame, and the threaded pipe is rotatably arranged in the pressing table through a bearing.

[0021] Through the technical scheme, the threaded pipe is rotated to drive the pressing table to move until it is tightly inserted into the circular groove, so as to position the movable frame and reinforce the stability of the movable frame.

[0022] The utility model discloses further improve, the outer side of the compression station is equipped with the sealing sleeve, and the sealing sleeve is inserted tightly in the round groove.

[0023] Through the technical scheme design, the compression station is tightly limited.

[0024] The utility model discloses the working principle: the threaded ring is screwed in the threaded recess, and the end of the pipeline body contacts the end of the connector body, and the pipeline body is inserted tightly in the inside of the reinforcing ring, manually drive the movable frame, and make it slide on the reinforcing ring through the sliding pair, the plug rod of movable frame is inserted tightly in the limiting ring, and the movable frame is tightly arranged with the limiting ring, then, manually move and rotate the locking frame, and make it lock on the movable frame, and make the movable frame locate on the reinforcing ring, then, rotate the threaded pipe, drive the compression station to move, until the compression station is inserted tightly in the round groove, and the movable frame is reinforced and locked, thereby reinforcing the connection between the pipeline body and the connector body.

[0025] Compared with the prior art, the utility model has the advantages that:

[0026] 1, the movable frame is tightly sleeved on the reinforcing ring, and the pipeline body is preliminarily limited, and the locking frame is screwed on the movable frame, so that the movable frame is locked and limited, and the connection between the pipeline body and the connector body is reinforced.

[0027] 2, the outer diameter of the limiting ring is less than the inner diameter of the locking frame, so that the locking frame is rotatably sleeved on the movable frame and locked on the movable frame.

[0028] 3, the threaded pipe moves on the fixed screw, drives the compression station to move, until it is inserted in the movable frame, and the movable frame is further reinforced and limited, and the connection between the pipeline body and the connector body is stable.

[0029] 4, the plug rod is inserted in the insertion hole, and the movement of the movable frame is guided and limited. DRAWINGS

[0030] Figure 1 It is the structural schematic diagram of the utility model.

[0031] Figure 2 It is the connection structure schematic diagram between the connector body, the pipeline body, the reinforcing ring, the locking frame and the movable frame in the utility model.

[0032] Figure 3 It is the A part of the utility model. Figure 2

[0033] Figure 4 It is the B part of the utility model. Figure 2

[0034] Figure 5 ​​It is the connecting structure schematic view of the pipeline body and the joint body in the utility model.

[0035] Figure 6 It is the connecting structure schematic view of the locking frame, the positioning ring, the limiting ring and the movable frame in the utility model.

[0036] Mark explanation:

[0037] Pipeline body 1, threaded groove 1-1, joint body 2, threaded ring 3, reinforcing ring 4, limiting ring 5, jack 5-1, movable frame 6, positioning ring 7, locking frame 8, plug rod 9, connecting frame 10, supporting ring 11, compression assembly 12, fixed screw rod 12-1, threaded pipe 12-2, compression platform 12-3, sealing sleeve 12-4. Specific implementation

[0038] The technical scheme in the utility model will be described clearly and completely in conjunction with the drawings, and the preferred embodiment in the description is only as an example, and all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0039] Embodiment 1:

[0040] Please refer to Figures 1-6 , this embodiment contains pipeline body 1 and joint body 2, one end of the pipeline body 1 is provided with joint body 2; the end of the pipeline body 1 is provided with threaded groove 1-1, the inner end of the joint body 2 is fixedly provided with threaded ring 3, and the threaded ring 3 is arranged in the threaded groove 1-1 by threaded rotation; further contain:

[0041] Reinforcing ring 4, the reinforcing ring 4 is sleeved and fixed on the end of the joint body 2, and the pipeline body 1 is inserted on the reinforcing ring 4;

[0042] Limiting ring 5, the limiting ring 5 is sleeved and fixed on the pipeline body 1, and the limiting ring 5 is in contact with the reinforcing ring 4;

[0043] Movable frame 6, the movable frame 6 is movably sleeved on the pipeline body 1, and the movable frame 6 is in contact with the side, away from the reinforcing ring 4, of the limiting ring 5, and the open end of the movable frame 6 is movably sleeved on the reinforcing ring 4 through the sliding pair; a plurality of jack holes 5-1 are distributed and arranged on the outer side wall of the limiting ring 5, a plurality of plug rods 9 are fixedly arranged on the inner wall of the movable frame 6, and the plug rods 9 are inserted into the jack holes 5-1;

[0044] Positioning ring 7, the positioning ring 7 is sleeved and fixed on the reinforcing ring 4, and the positioning ring 7 is in contact with the left side of the movable frame 6; the outer diameter of the positioning ring 7 is less than the outer diameter of the movable frame 6;

[0045] The locking frame 8 is movably sleeved on the reinforcing ring 4, and the locking frame 8 contacts the left side of the positioning ring 7. The open end of the locking frame 8 is sleeved on the movable frame 6 through threaded connection.

[0046] Through the above technical scheme design, the locking frame 8 is locked on the movable frame 6, so that the movable frame 6 is fixed on the reinforcing ring 4, and the pipe body 1 and the joint body 2 are stable.

[0047] Embodiment 2:

[0048] Please refer to Figures 1-6 On the basis of embodiment 1, further improvement is made. A plurality of connecting frames 10 are fixedly arranged on the outer ring wall of the reinforcing ring 4 at equal angles, and the connecting frames 10 are arranged in an "L" shape. The connecting frames 10 are arranged on the left side of the locking frame 8. The outer side of the movable frame 6 movably sleeves a supporting ring 11, and the supporting ring 11 is arranged on the right side of the locking frame 8. The supporting ring 11 is connected to the transverse end of the connecting frame 10. A plurality of pressing assemblies 12 are arranged between the supporting ring 11 and the movable frame 6, and the plurality of pressing assemblies 12 are arranged at equal angles.

[0049] A fixed screw 12-1 is fixedly arranged on the inner ring wall of the supporting ring 11.

[0050] A threaded pipe 12-2 is sleeved on the fixed screw 12-1 through threaded connection.

[0051] A pressing table 12-3 is inserted into the circular groove formed in the outer ring wall of the movable frame 6, and the threaded pipe 12-2 is rotatably arranged in the pressing table 12-3 through a bearing. A sealing sleeve 12-4 is sleeved on the outer side of the pressing table 12-3, and the sealing sleeve 12-4 is tightly inserted into the circular groove.

[0052] Through the above technical scheme design, the connecting frame 10 supports the supporting ring 11, and the supporting ring 11 and the movable frame 6 are connected through the pressing assembly 12 to press and limit the movable frame 6.

[0053] When the utility model is used, the threaded ring 3 is screwed in the threaded groove 1-1, the end of the pipeline body 1 is in contact with the end of the joint body 2, and the pipeline body 1 is inserted tightly in the inside of the reinforcing ring 4; the movable frame 6 is manually driven to slide on the reinforcing ring 4 through the sliding pair, the inserting rod 9 in the inside of the movable frame 6 is inserted tightly in the limiting ring 5, and the movable frame 6 is in abutting contact with the limiting ring 5; then, the locking frame 8 is manually moved and rotated to be locked on the movable frame 6, so that the movable frame 6 is positioned on the reinforcing ring 4; subsequently, the threaded pipe 12-2 is rotated to drive the pressing table 12-3 to move until the pressing table 12-3 is inserted tightly in the circular groove, and the movable frame 6 is reinforced and locked, thereby reinforcing the connection between the pipeline body 1 and the joint body 2.

[0054] Compared with the prior art, the utility model has the beneficial effects that:

[0055] 1, the movable frame 6 is tightly sleeved on the reinforcing ring 4, the pipeline body 1 is preliminarily limited, and the locking frame 8 is screwed on the movable frame 6, so that the movable frame 6 is locked and limited, and the connection between the pipeline body 1 and the joint body 2 is reinforced;

[0056] 2, the outer diameter of the positioning ring 7 is less than the inner diameter of the locking frame 8, so that the locking frame 8 is rotatably sleeved on the movable frame 6 and is rotatably locked on the movable frame 6;

[0057] 3, the threaded pipe 12-2 moves on the fixed screw rod 12-1, thereby driving the pressing table 12-3 to move until being inserted tightly in the movable frame 6, the movable frame 6 is further limited, and the connection between the pipeline body 1 and the joint body 2 is reinforced and stabilized;

[0058] 4, the inserting rod 9 is inserted in the insertion hole 5-1, thereby guiding and limiting the movement of the movable frame 6.

[0059] For those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, and equivalent replacement of part of the technical features can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An oilfield development water injection pipe with a maintenance-friendly butt joint structure, comprising a pipe body (1) and a joint body (2), one end of the pipe body (1) being provided with the joint body (2); a threaded groove (1-1) being formed in the end of the pipe body (1), an inner end of the joint body (2) being fixedly provided with a threaded ring (3), and the threaded ring (3) being arranged in the threaded groove (1-1) through threaded screwing. characterized in that It further comprises: a reinforcing ring (4), the reinforcing ring (4) being sleeved and fixed on the end of the joint body (2), and the pipe body (1) being inserted on the reinforcing ring (4); a limiting ring (5), the limiting ring (5) being sleeved and fixed on the pipe body (1), and the limiting ring (5) being arranged in contact with the reinforcing ring (4); a movable frame (6), the movable frame (6) being movably sleeved on the pipe body (1), and the movable frame (6) being arranged in contact with the limiting ring (5) on the side away from the reinforcing ring (4), the open end of the movable frame (6) being movably sleeved on the reinforcing ring (4) through a sliding pair; a positioning ring (7), the positioning ring (7) being sleeved and fixed on the reinforcing ring (4), and the positioning ring (7) being arranged in contact with the left side of the movable frame (6); a locking frame (8), the locking frame (8) being movably sleeved on the reinforcing ring (4), and the locking frame (8) being arranged in contact with the left side of the positioning ring (7), the open end of the locking frame (8) being sleeved on the movable frame (6) through threaded screwing.

2. A water injection pipe for oil field development provided with a maintenance-friendly docking structure according to claim 1, characterized in that: The outer diameter of the positioning ring (7) is smaller than the outer diameter of the movable frame (6).

3. A water injection pipe for oil field development provided with a maintenance-friendly docking structure according to claim 1, characterized in that: A plurality of insertion holes (5-1) are formed in the outer side wall of the limiting ring (5) at equal circular angles, a plurality of insertion rods (9) are fixedly arranged on the inner wall of the movable frame (6) at equal circular angles, and the insertion rods (9) are inserted into the insertion holes (5-1).

4. A water injection pipe for oil field development provided with a maintenance-friendly docking structure according to claim 1, characterized in that: A plurality of connecting frames (10) are fixedly arranged on the outer ring wall of the reinforcing ring (4) at equal circular angles, the connecting frames (10) are arranged in an "L" shape, the connecting frames (10) are arranged on the left side of the locking frame (8), a supporting ring (11) is movably sleeved on the outer side of the movable frame (6), the supporting ring (11) is arranged on the right side of the locking frame (8), and the supporting ring (11) is connected to the transverse end of the connecting frame (10); a plurality of pressing assemblies (12) are arranged between the supporting ring (11) and the movable frame (6), and the plurality of pressing assemblies (12) are arranged at equal circular angles.

5. A water injection pipe for oil field development provided with a maintenance-friendly docking structure according to claim 4, characterized in that: The pressing assembly (12) comprises: a fixed screw rod (12-1) fixedly arranged on the inner ring wall of the supporting ring (11); a threaded tube (12-2) sleeved on the fixed screw rod (12-1) through threaded screwing; a pressing table (12-3) inserted into a circular groove formed in the outer ring wall of the movable frame (6), and the threaded tube (12-2) is rotatably arranged in the pressing table (12-3) through a bearing.

6. A water injection pipe for oil field development provided with a maintenance-friendly docking structure according to claim 5, characterized in that: A sealing sleeve (12-4) is sleeved on the outer side of the pressing table (12-3), and the sealing sleeve (12-4) is tightly inserted into the circular groove.

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