Seamless pipeline connecting device

Abstract

The utility model relates to the field of oil field pipeline quick connecting devices, in particular to a seamless pipeline connecting device. According to the technical scheme, one end of a seamless connector is connected with the right end of a first pipe clamping butt joint, the other end of the seamless connector is connected with the left end of a second pipe clamping butt joint, the left end of the first pipe clamping butt joint is connected with a pipeline through a fixing pipe jackscrew, and the right end of the second pipe clamping butt joint is connected with a connecting pipe through a fixing pipe jackscrew; and the rubber pressing rings are respectively arranged at the inner steps of the seamless connector. The joint has the advantages that a pipeline is fed into the outer joint of the first pipe clamping butt joint, the inner joint at the other end of the pipeline is inserted into the seamless connector, and the outer joint is locked through the fixing pipe jackscrew, so that the position stability of the pipeline is guaranteed; and at the other end of the seamless connector, the seamless connector is connected with the connecting pipe through the second pipe clamping butt joint, so that the connection of a section of pipeline and the connecting pipe is realized, the risk caused by field electro-gas welding is avoided, and the repair efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of rapid connection devices for oilfield pipelines, and particularly to a seamless pipeline connection device. Background Art

[0002] The main channel for oilfield to transport oil, water and gas is mainly pipelines, which are devices composed of pipes, pipe connectors and valves, etc. for transporting gases, liquids or fluids with solid particles. Usually, after the fluid is pressurized by blowers, compressors, pumps, boilers, etc., it flows from the high-pressure part of the pipeline to the low-pressure part, or it can also be transported by the pressure or gravity of the fluid itself.

[0003] However, in pipeline engineering construction, different connection methods should be selected according to the material of the used pipes. Ordinary steel pipes have threaded connections, welding and flange connections; seamless steel pipes, non-ferrous metals and stainless steel pipes are mostly welded and flanged connections; in the main pipelines for oilfield transportation media, metal pipelines are in the majority, and the connection method is mainly welding connection. In addition, with the update of national standards and specifications for the oilfield pipe network, the operating conditions of oil wells do not meet the requirements of current specifications; some oil wells produce a certain amount of hydrogen sulfide gas while lifting the mineral liquid medium, and the pipeline integration level is relatively low. At present, for various situations such as analyzing the extraction volume, replacing damaged pipelines, connecting new well pipelines at the connection head, and replacing damaged valves, the main treatment method at the present stage is mainly electric welding. However, the problems existing in electric welding operations are: one is occupational hazards, including harmful gases, metal fumes, radiation and arc light, noise, high-frequency electromagnetic fields and musculoskeletal injuries, and the other is possible emergencies such as fires and explosions. Especially for the oilfield on-site operation environment, there are huge potential safety hazards. Content of the Utility Model

[0004] The purpose of the utility model is to provide a seamless pipeline connection device aiming at the above-mentioned defects existing in the prior art. By adopting a seamless connector, a first pipe clamping docking head and a second pipe clamping docking head, the rapid connection of oilfield pipelines is realized, and the risks brought by on-site electric welding operations are avoided.

[0005] A seamless pipeline connection device mentioned in the utility model, its technical solution is: including a connecting pipe, and further including a first pipe clamping docking head, a seamless connector, a fixed pipe top screw, a rubber pressing ring and a second pipe clamping docking head. One end of the seamless connector is connected to the right end of the first pipe clamping docking head, and the other end of the seamless connector is connected to the left end of the second pipe clamping docking head. The left end of the first pipe clamping docking head is connected to the pipeline through the fixed pipe top screw, and the right end of the second pipe clamping docking head is connected to the connecting pipe through the fixed pipe top screw; the rubber pressing rings are respectively installed at the first inner step and the second inner step of the seamless connector.

[0006] Preferably, the above seamless connector includes a connector body, screw holes, a central cavity, a first connection channel, and a second connection channel. Multiple uniformly distributed screw holes are provided on both end faces of the connector body. A first connection channel is provided at one end of the inner cavity of the connector body, and a second connection channel is provided at the other end. A central cavity is provided between the first connection channel and the second connection channel.

[0007] Preferably, the inner diameter of the above central cavity is smaller than the inner diameters of the first connection channel and the second connection channel, and a first inner step is formed at the connection between the first connection channel and the central cavity, and a second inner step is formed at the connection between the second connection channel and the central cavity.

[0008] Preferably, the above first pipe connector adapter includes an adapter body, an inner adapter, an outer adapter, connection holes, and setscrew threaded holes. An extended inner adapter is provided at one end of the adapter body, and an extended outer adapter is provided at the other end. Multiple connection holes are uniformly distributed on the outer circumference of the adapter body, and multiple setscrew threaded holes are uniformly distributed on the outer adapter. The inner adapter is inserted into the inner cavity of the first connection channel of the seamless connector to achieve movable connection, and the pipe is inserted into the inner cavity of the outer adapter and connected by a fixed pipe setscrew.

[0009] Preferably, one end of the above seamless connector is connected in cooperation with the connection holes of the first pipe connector adapter through multiple extrusion bolts, and the other end of the seamless connector is connected in cooperation with the connection holes of the second pipe connector adapter through multiple extrusion bolts.

[0010] Preferably, one end of the above seamless connector is connected in cooperation with the connection holes of the first pipe connector adapter through multiple quick buckles, and the other end of the seamless connector is connected in cooperation with the connection holes of the second pipe connector adapter through multiple quick buckles.

[0011] Preferably, the above quick buckle includes a buckle support, a connecting shaft, a buckle body, a lock, and a wrench handle. The middle of the buckle support is connected to one end of the buckle body through the connecting shaft. A lock is provided at the outer end of the buckle body for cooperating with the connection hole of the first pipe connector adapter, and a wrench handle is provided at the rear end of the buckle body.

[0012] The beneficial effects of the present utility model are as follows: By inserting the pipeline into the outer joint of the first pipe clamping docking head, the inner joint at the other end of the first pipe clamping docking head is inserted into the first connection channel of the seamless connector, and the rubber pressing ring is installed at the internal stepped hole of the seamless connector; the outer joint of the first pipe clamping docking head is fixed and locked on the outer wall of the pipeline by a plurality of fixed pipe top screws evenly distributed, thus ensuring the stable position of the pipeline; at the other end of the seamless connector, the seamless connector is connected to the connecting pipe through the second pipe clamping docking head, thereby realizing the connection between a section of pipeline and the connecting pipe; then, for another section of pipeline, the same method is adopted, and finally the disconnected pipelines are connected, avoiding the risks brought by on-site electric welding and improving the efficiency of pipeline repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present utility model;

[0014] Figure 2 is the exploded schematic diagram of Embodiment 1 of the present utility model;

[0015] Figure 3 is the perspective schematic diagram of the seamless connector of the present utility model;

[0016] Figure 4 is the external shape schematic diagram of the seamless connector;

[0017] Figure 5 is the sectional structural schematic diagram of the seamless connector;

[0018] Figure 6 is the external shape schematic diagram of the first pipe clamping docking head;

[0019] Figure 7 is the external shape schematic diagram of the first pipe clamping docking head from another angle;

[0020] Figure 8 is the sectional structural schematic diagram of the first pipe clamping docking head;

[0021] Figure 9 is the overall structural schematic diagram of Embodiment 2 of the present utility model;

[0022] Figure 10 is the exploded schematic diagram of Embodiment 2 of the present utility model;

[0023] Figure 11 is the external shape schematic diagram of the second embodiment of the seamless connector;

[0024] Figure 12 is the sectional structural schematic diagram of the second embodiment of the seamless connector;

[0025] Figure 13It is a schematic structural diagram of the second embodiment of the first pipe coupling joint;

[0026] Figure 14 It is a schematic structural diagram of the quick buckle;

[0027] In the figure: the first pipe coupling joint 1, the seamless connector 2, the fixed pipe setscrew 3, the extrusion bolt 4, the rubber packing ring 5, the connecting pipe 6, the pipeline 7, the second pipe coupling joint 8, the quick buckle 9;

[0028] The joint body 1.1, the inner joint 1.2, the outer joint 1.3, the connecting hole 1.4, the setscrew threaded hole 1.5, the connector body 2.1, the screw hole 2.2, the first inner step 2.3, the second inner step 2.4, the central cavity 2.5, the first connection channel 2.6, the second connection channel 2.7, the buckle support 9.1, the connecting shaft 9.2, the buckle body 9.3, the lock 9.4, the wrench handle 9.5. Specific embodiments

[0029] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0030] Embodiment 1, referring to Figures 1-4 , a seamless pipeline connection device mentioned in the present invention includes a connecting pipe 6, a first pipe coupling joint 1, a seamless connector 2, a fixed pipe setscrew 3, a rubber packing ring 5 and a second pipe coupling joint 8. One end of the seamless connector 2 is connected to the right end of the first pipe coupling joint 1, and the other end of the seamless connector 2 is connected to the left end of the second pipe coupling joint 8. The left end of the first pipe coupling joint 1 is connected to the pipeline 7 through the fixed pipe setscrew 3, and the right end of the second pipe coupling joint 8 is connected to the connecting pipe 6 through the fixed pipe setscrew 3; the rubber packing rings 5 are respectively installed at the first inner step 2.3 and the second inner step 2.4 of the seamless connector 2.

[0031] Referring to Figures 3-5 , the seamless connector 2 mentioned in the present invention includes a connector body 2.1, a screw hole 2.2, a central cavity 2.5, a first connection channel 2.6, and a second connection channel 2.7. Both end faces of the connector body 2.1 are respectively provided with a plurality of uniformly distributed screw holes 2.2. A first connection channel 2.6 is provided at one end of the inner cavity of the connector body 2.1, and a second connection channel 2.7 is provided at the other end. A central cavity 2.5 is provided between the first connection channel 2.6 and the second connection channel 2.7.

[0032] Wherein, the inner diameter of the central cavity 2.5 is smaller than the inner diameters of the first connection channel 2.6 and the second connection channel 2.7, and a first inner step 2.3 is formed at the connection between the first connection channel 2.6 and the central cavity 2.5, and a second inner step 2.4 is formed at the connection between the second connection channel 2.7 and the central cavity 2.5.

[0033] Referring to Figures 6-8 , the first pipe coupling joint 1 mentioned in the present utility model includes a joint body 1.1, an inner joint 1.2, an outer joint 1.3, a connection hole 1.4, and a setscrew threaded hole 1.5. One end of the joint body 1.1 is provided with a protruding inner joint 1.2, and the other end is provided with a protruding outer joint 1.3. A plurality of connection holes 1.4 are evenly distributed on the outer circumference of the joint body 1.1, and a plurality of setscrew threaded holes 1.5 are evenly distributed on the outer joint 1.3. The inner joint 1.2 is inserted into the inner cavity of the first connection channel 2.6 of the seamless connector 2 to achieve movable connection, and the pipe 7 is inserted into the inner cavity of the outer joint 1.3 and connected through the fixed pipe setscrew 3.

[0034] In addition, it should be noted that: the structure of the second pipe coupling joint 8 is the same as that of the first pipe coupling joint 1.

[0035] Wherein, one end of the seamless connector 2 is connected in cooperation with the connection hole 1.4 of the first pipe coupling joint 1 through a plurality of extrusion bolts 4, and the other end of the seamless connector 2 is connected in cooperation with the connection hole 1.4 of the second pipe coupling joint 8 through a plurality of extrusion bolts 4.

[0036] The using process of the present utility model is as follows:

[0037] After the pipeline 7 in the oil field is damaged, the damaged part is generally welded with a new pipe by electric welding after cutting. However, in on-site operations, there are many risks in electric welding. Therefore, electric welding should be avoided as much as possible. Therefore, the present utility model is used for the rapid connection of the damaged pipeline 7. The specific process includes the following:

[0038] When the pipeline 7 needs to be connected, the outer end of the pipeline 7 is sent into the outer joint 1.3 of the first pipe clamping docking head 1, the inner joint 1.2 at the other end of the first pipe clamping docking head 1 is inserted into the first connection channel 2.6 of the seamless connector 2, and the rubber pressing ring 5 is arranged at the internal stepped hole of the seamless connector 2; the outer joint 1.3 of the first pipe clamping docking head 1 is fixed on the outer wall of the pipeline 7 and locked by a plurality of uniformly distributed fixed pipe top screws 3, so as to ensure the stable position of the pipeline 7; at the other end of the seamless connector 2, in the same way, the seamless connector 2 is connected with the connecting pipe 6 through the second pipe clamping docking head 8, thus realizing the connection of a section of pipeline 7 and the connecting pipe 6; then, for another section of pipeline 7, in the same way, the pipeline 7 and the connecting pipe 6 are connected through the present utility model, and finally the disconnected pipeline 7 is connected by combining the present utility model and the connecting pipe 6. Due to the rubber pressing ring 5 in the middle, the device can meet the good sealing requirements.

[0039] Embodiment 2. A seamless pipeline connection device mentioned in the present utility model includes a connecting pipe 6, a first pipe clamping docking head 1, a seamless connector 2, fixed pipe top screws 3, a rubber pressing ring 5 and a second pipe clamping docking head 8. One end of the seamless connector 2 is connected to the right end of the first pipe clamping docking head 1, and the other end of the seamless connector 2 is connected to the left end of the second pipe clamping docking head 8. The left end of the first pipe clamping docking head 1 is connected to the pipeline 7 through the fixed pipe top screws 3, and the right end of the second pipe clamping docking head 8 is connected to the connecting pipe 6 through the fixed pipe top screws 3; the rubber pressing rings 5 are respectively arranged at the first inner step 2.3 and the second inner step 2.4 of the seamless connector 2.

[0040] The difference from Embodiment 1 is:

[0041] Refer to Figures 9-13 , one end of the seamless connector 2 mentioned in this embodiment is connected to the connection hole 1.4 of the first pipe clamping docking head 1 through a plurality of quick buckles 9 in a matching manner, and the other end of the seamless connector 2 is connected to the connection hole 1.4 of the second pipe clamping docking head 8 through a plurality of quick buckles 9 in a matching manner. It should be noted that the connection hole 1.4 in this embodiment is a strip structure for matching with the lock catch 9.4 of the quick buckle 9.

[0042] Refer to Figure 14 , the quick buckle 9 mentioned in this embodiment includes a buckle support 9.1, a connecting shaft 9.2, a buckle body 9.3, a lock catch 9.4 and a wrench handle 9.5. The middle of the buckle support 9.1 is connected to one end of the buckle body 9.3 through the connecting shaft 9.2. The outer end of the buckle body 9.3 is provided with a lock catch 9.4 for matching with the connection hole 1.4 of the first pipe clamping docking head 1. A wrench handle 9.5 is arranged at the rear end of the buckle body 9.3 for opening the buckle body 9.3 to make the lock catch 9.4 disengage from the connection hole 1.4.

[0043] The utility model adopts a snap-type seamless connector 2, which facilitates the on-site rapid connection operation of the pipeline 7, reduces the workload caused by rotating and squeezing the bolts 4, and improves the efficiency.

[0044] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent transformation made according to the technical solutions of the utility model falls within the scope of protection required by the utility model.

Claims

1. A seamless pipeline connection device, comprising a connecting pipe (6), characterized in that: It also comprises a first pipe clamping joint (1), a seamless connector (2), a fixed pipe top screw (3), a rubber pressure ring (5) and a second pipe clamping joint (8), wherein one end of the seamless connector (2) is connected to the right end of the first pipe clamping joint (1), and the other end of the seamless connector (2) is connected to the left end of the second pipe clamping joint (8); the left end of the first pipe clamping joint (1) is connected to the pipeline (7) via the fixed pipe top screw (3), and the right end of the second pipe clamping joint (8) is connected to the connecting pipe (6) via the fixed pipe top screw (3); the rubber pressure ring (5) is respectively installed at the first inner step (2.3) and the second inner step (2.4) of the seamless connector (2); The seamless connector (2) comprises a connector body (2.1), screw holes (2.2), a central cavity (2.5), a first connection channel (2.6), and a second connection channel (2.7); a plurality of evenly distributed screw holes (2.2) are respectively provided on both end surfaces of the connector body (2.1); a first connection channel (2.6) is provided at one end of the inner cavity of the connector body (2.1), and a second connection channel (2.7) is provided at the other end; and a central cavity (2.5) is provided between the first connection channel (2.6) and the second connection channel (2.7).

2. The seamless pipeline connection device according to claim 1 is characterized in that: The inner diameter of the central cavity (2.5) is smaller than the inner diameters of the first connecting channel (2.6) and the second connecting channel (2.7), and a first inner step (2.3) is formed at the connection between the first connecting channel (2.6) and the central cavity (2.5), and a second inner step (2.4) is formed at the connection between the second connecting channel (2.7) and the central cavity (2.5).

3. The seamless pipeline connection device according to claim 2 is characterized in that: The first pipe clamping joint (1) comprises a joint body (1.1), an inner joint (1.2), an outer joint (1.3), a connection hole (1.4), and a top screw threaded hole (1.5); one end of the joint body (1.1) is provided with a protruding inner joint (1.2), and the other end is provided with a protruding outer joint (1.3); a plurality of connection holes (1.4) are evenly distributed on the outer ring of the joint body (1.1); a plurality of top screw threaded holes (1.5) are evenly distributed on the outer joint (1.3); the inner joint (1.2) is inserted into the inner cavity of the first connection channel (2.6) of the seamless connector (2) to achieve a movable connection; the pipe (7) is inserted into the inner cavity of the outer joint (1.3) and is connected by fixing the pipe top screw (3).

4. The seamless pipeline connection device according to claim 3 is characterized in that: One end of the seamless connector (2) is connected to the connection hole (1.4) of the first pipe clamping joint (1) through a plurality of extrusion bolts (4), and the other end of the seamless connector (2) is connected to the connection hole (1.4) of the second pipe clamping joint (8) through a plurality of extrusion bolts (4).

5. The seamless pipeline connection device according to claim 3 is characterized in that: One end of the seamless connector (2) is connected to the connection hole (1.4) of the first pipe-clamping joint (1) through a plurality of quick buckles (9), and the other end of the seamless connector (2) is connected to the connection hole (1.4) of the second pipe-clamping joint (8) through a plurality of quick buckles (9).

6. The seamless pipeline connection device according to claim 5 is characterized in that: The quick clip (9) comprises a clip support (9.1), a connecting shaft (9.2), a clip body (9.3), a lock (9.4) and a spanner handle (9.5); the middle portion of the clip support (9.1) is connected to one end of the clip body (9.3) via the connecting shaft (9.2); the outer end of the clip body (9.3) is provided with a lock (9.4) for cooperating with a connecting hole (1.4) of the first clip pipe joint (1); and the spanner handle (9.5) is provided at the rear end of the clip body (9.3).

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