Fiber pipe butt joint sealing structure

Abstract

The utility model relates to the technical field of pipeline butt joint, in particular to a fiber pipe butt joint sealing structure. The fiber pipe butt joint sealing structure comprises a pipe body, and a sleeving pipe and an inserting pipe which are coaxially arranged are fixedly embedded into the two ends of the pipe body respectively. An annular air bag is installed on the inner wall of the socketed pipe, an air storage ring cavity is formed in the socketed pipe, the bottom of the air storage ring cavity is communicated with the annular air bag through a guide pipe, a piston ring in sliding connection is installed in the air storage ring cavity, and an inserting hole is formed in the end of the socketed pipe. According to the fiber pipe butt joint sealing structure, on one hand, the expanded annular air bag can be rapidly abutted against the outer pipe face of the inserting pipe, the gap between the outer pipe wall of the inserting pipe and the inner pipe wall of the sleeving pipe is filled, effective sealing of the sleeving pipe and the inserting pipe is achieved, on the other hand, the expanded annular air bag can be firmly abutted against the inserting pipe, and the sealing effect is good. Damping between the socketed pipe and the inserting pipe is increased, and fixation of the socketed pipe and the inserting pipe is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline butt joint, in particular to a fiber pipe butt joint sealing structure. Background Art

[0002] Fiber tubes are usually composed of fiber reinforcement layers and resin matrix. The purpose of this material structure design is to maximize the strength of the pipeline to meet the needs of different fields. There are various types of fiber materials, including carbon fiber, glass fiber, ceramic fiber, asphalt fiber, etc. These materials have excellent performance in temperature resistance, insulation and other aspects. Therefore, fiber tubes are often used in oil field development, generally by flange docking or plug-in. Plug-in is to insert a fiber tube into the socket of another fiber tube, and pour adhesive into the gap between the socket and the top pipe, which can effectively embed the top pipe and achieve good sealing. However, due to long-term exposure to wind and sun, the plug-in method is prone to corrosion and aging of the adhesive at the connection and cracking, which leads to failure of the seal at the fiber tube connection.

[0003] Therefore, it is necessary to provide a new fiber tube butt sealing structure to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a fiber tube butt sealing structure.

[0005] The fiber tube butt sealing structure provided by the utility model comprises a tube body, and both ends of the tube body are respectively fixedly embedded with a coaxially arranged sleeve tube and an inserted tube;

[0006] An annular air bag is installed on the inner ring wall of the sleeve tube, and an air storage ring cavity is opened in the sleeve tube, the bottom of the air storage ring cavity is communicated with the annular air bag through a conduit, and a piston ring in sliding connection is installed in the air storage ring cavity, and a plurality of insertion holes distributed in an annular manner and communicated with the air storage ring cavity are opened at the end of the sleeve tube;

[0007] A plurality of annularly distributed abutment rods are fixedly engaged at the connection between the insertion tube and the tube body, and the abutment rods correspond to the insertion holes one by one.

[0008] Preferably, an inner ring groove is formed on the inner ring wall of the sleeve tube, the annular airbag is embedded in the inner ring groove, and the wall of the annular airbag is fixedly connected to the bottom of the inner ring groove.

[0009] Preferably, an abutment ring for abutting against the insertion end of the insertion tube is fixedly embedded in the inner tube wall of the sleeve tube.

[0010] Preferably, both ends of the tube body are fixedly provided with docking flanges, and a plurality of bolts are installed on the docking flanges close to the sleeve pipe.

[0011] Preferably, the pipe head fixing sleeve of the sleeve is provided with a rubber compression ring, and the rubber compression ring extends out of the sleeve, and the rubber compression ring is provided with a plurality of annularly distributed oblique grooves, and the groove depth of the oblique grooves decreases from the sleeve to the insertion pipe direction.

[0012] Preferably, a screw ring with threaded connection is sleeved on the bolt, and a rotatably connected abutment plate is installed at the bottom of the screw ring, and the abutment plate is inserted into the oblique cut groove of the corresponding rubber compression ring.

[0013] Compared with the related art, the fiber tube butt sealing structure provided by the utility model has the following beneficial effects:

[0014] 1. The utility model is inserted into the sleeve tube on the butt-jointed tube body. When the insertion tube is inserted into the sleeve tube, the piston ring is pushed inward by the abutting rod, so that the piston ring presses the gas in the gas storage ring cavity to the annular airbag. At this time, the annular airbag expands. On the one hand, the expanded annular airbag can quickly abut the outer tube surface of the insertion tube and fill the gap between the outer tube wall of the insertion tube and the inner tube wall of the sleeve tube, thereby achieving effective sealing of the sleeve tube and the insertion tube. On the other hand, the expanded annular airbag can firmly abut the insertion tube, thereby increasing the damping between the sleeve tube and the insertion tube, thereby achieving fixation of the sleeve tube and the insertion tube.

[0015] 2. In the utility model, after the two fiber tubes are butt-jointed, the bolts of the butt flange on the sleeve are fixedly connected with the corresponding butt flange on the other tube, and then the screw ring is slid along the bolt toward the other tube. Since the depth of the oblique groove decreases from the sleeve toward the inserted tube, as the abutment plate slides outward along the oblique groove of the rubber compression ring, the abutment plate firmly presses the rubber compression ring against the other tube, thereby effectively covering the butt joint of the two tubes. At the same time, since the rubber compression ring firmly presses against the other tube, the sealing effect of the connection between the two tubes is further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a preferred embodiment of the fiber tube butt sealing structure provided by the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the tube body shown;

[0018] Figure 3 for Figure 2 A schematic cross-sectional structural diagram of the tube body shown;

[0019] Figure 4 for Figure 1 Schematic diagram of the installation structure of the screw ring on the bolt shown;

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the rubber compression ring shown.

[0021] Numbers in the figure: 1, tube body; 2, sleeve tube; 2a, air storage ring cavity; 2b, insertion hole; 2c, inner ring groove; 21, abutment ring; 3, insertion tube; 31, abutment rod; 4, piston ring; 5, annular airbag; 6, docking flange; 7, rubber compression ring; 7a, oblique groove; 8, bolt; 9, screw ring; 91, abutment plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] See also Figures 1 to 5 The embodiment of the utility model provides a fiber tube butt sealing structure, which includes a tube body 1, a sleeve tube 2 and an insertion tube 3, and the two ends of the tube body 1 are respectively fixedly embedded with a coaxially arranged sleeve tube 2 and an insertion tube 3.

[0025] In the embodiments of the present invention, please refer to Figures 1 to 5 An annular airbag 5 is installed on the inner ring wall of the sleeve tube 2. Specifically, an inner ring groove 2c is provided on the inner ring wall of the sleeve tube 2. The annular airbag 5 is embedded in the inner ring groove 2c, and the bag wall of the annular airbag 5 is fixedly connected to the groove bottom of the inner ring groove 2c. An air storage ring cavity 2a is provided in the sleeve tube 2. The bottom of the air storage ring cavity 2a is communicated with the annular airbag 5 through a conduit, and a slidingly connected piston ring 4 is installed in the air storage ring cavity 2a. A plurality of annularly distributed insertion holes 2b connected to the air storage ring cavity 2a are provided at the end of the sleeve tube 2. A plurality of annularly distributed abutment rods 31 are fixedly embedded at the connection between the insertion tube 3 and the tube body 1, and the abutment rods 31 correspond one to one to the insertion holes 2b.

[0026] It should be noted that: when the tube bodies 1 of two fiber tubes are butt-jointed, the insertion tube 3 on one tube body 1 is inserted into the sleeve tube 2 on the butt-jointed tube body 1 (keeping the abutment rod 31 corresponding to the insertion hole 2b one by one). When the insertion tube 3 is inserted into the sleeve tube 2, the abutment rod 31 pushes the piston ring 4 inward, so that the piston ring 4 presses the gas in the air storage ring cavity 2a to the annular airbag 5. At this time, the annular airbag 5 expands. On the one hand, the expanded annular airbag 5 can quickly abut against the outer tube surface of the insertion tube 3 and fill the gap between the outer tube wall of the insertion tube 3 and the inner tube wall of the sleeve tube 2, thereby achieving effective sealing between the sleeve tube 2 and the insertion tube 3. On the other hand, the expanded annular airbag 5 can firmly abut against the insertion tube 3, thereby increasing the damping between the sleeve tube 2 and the insertion tube 3, thereby achieving fixation of the sleeve tube 2 and the insertion tube 3.

[0027] Furthermore, an abutment ring 21 for abutting against the insertion end of the insertion tube 3 is fixedly embedded in the inner tube wall of the sleeve tube 2 , and the abutment ring 21 can limit the insertion end of the insertion tube 3 .

[0028] In the embodiments of the present invention, please refer to Figures 1 to 5 Both ends of the tube body 1 are fixedly sleeved with docking flanges 6, and a plurality of bolts 8 are installed on the docking flanges 6 close to the sleeve tube 2, and the pipe head of the sleeve tube 2 is fixedly sleeved with a rubber compression ring 7, and the rubber compression ring 7 extends out of the sleeve tube 2, and the rubber compression ring 7 is provided with a plurality of annularly distributed oblique grooves 7a, and the groove depth of the oblique groove 7a decreases from the sleeve tube 2 to the insertion direction of the tube 3, and a threaded screw ring 9 is sleeved on the bolt 8, and a rotatably connected abutment plate 91 is installed at the bottom of the screw ring 9, and the abutment plate 91 is inserted into the oblique groove 7a of the corresponding rubber compression ring 7.

[0029] It should be noted that: after the pipe bodies 1 of the two fiber tubes are butt-jointed, the bolts 8 of the butt flange 6 on the sleeve pipe 2 are fixedly connected with the corresponding butt flange 6 on the other pipe body 1, and then the screw ring 9 is slid along the bolt 8 toward the other pipe body. Since the groove depth of the oblique groove 7a decreases from the sleeve pipe 2 toward the insertion pipe 3, as the abutment plate 91 slides outward along the oblique groove 7a of the rubber compression ring 7, the abutment plate 91 firmly presses the rubber compression ring 7 on the other pipe body 1, thereby effectively covering the butt joint of the two pipe bodies. At the same time, since the rubber compression ring 7 firmly presses on the other pipe body 1, the sealing effect of the connection between the two pipe bodies 1 is further enhanced.

[0030] The working principle of the fiber tube butt sealing structure provided by the utility model is as follows:

[0031] When the tube bodies 1 of two fiber tubes are butt-jointed, the insertion tube 3 on one tube body 1 is inserted into the sleeve tube 2 on the butt-jointed tube body 1 (keeping the abutment rod 31 corresponding to the insertion hole 2b one by one). When the insertion tube 3 is inserted into the sleeve tube 2, the abutment rod 31 pushes the piston ring 4 inward, so that the piston ring 4 presses the gas in the gas storage ring cavity 2a to the annular airbag 5. At this time, the annular airbag 5 expands. On the one hand, the expanded annular airbag 5 can quickly abut against the outer tube surface of the insertion tube 3 and fill the gap between the outer tube wall of the insertion tube 3 and the inner tube wall of the sleeve tube 2, thereby achieving effective sealing between the sleeve tube 2 and the insertion tube 3. On the other hand, the expanded annular airbag 5 can firmly abut against the insertion tube 3, thereby increasing the damping between the sleeve tube 2 and the insertion tube 3. , realizing the fixation of the sleeve tube 2 and the insertion tube 3; and when the tube bodies 1 of the two fiber tubes are connected, the bolts 8 of the docking flange 6 on the sleeve tube 2 are fixedly connected with the corresponding docking flange 6 on the other tube body 1, and then the screw ring 9 is slid along the bolt 8 toward the other tube body. Since the groove depth of the oblique groove 7a decreases from the sleeve tube 2 toward the insertion tube 3, as the abutment plate 91 slides outward along the oblique groove 7a of the rubber compression ring 7, the abutment plate 91 firmly abuts the rubber compression ring 7 on the other tube body 1, thereby effectively covering the docking point of the two tube bodies. At the same time, since the rubber compression ring 7 firmly abuts on the other tube body 1, the sealing effect of the connection between the two tube bodies 1 is further enhanced.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fiber tube butt sealing structure, comprising a tube body (1), wherein two ends of the tube body (1) are respectively fixedly engaged with a coaxially arranged sleeve tube (2) and an insert tube (3), characterized in that: An annular air bag (5) is installed on the inner wall of the sleeve tube (2), and an air storage ring cavity (2a) is provided in the sleeve tube (2), the bottom of the air storage ring cavity (2a) is communicated with the annular air bag (5) via a conduit, and a piston ring (4) is installed in the air storage ring cavity (2a) in a sliding connection, and a plurality of insertion holes (2b) distributed in an annular manner and communicated with the air storage ring cavity (2a) are provided at the end of the sleeve tube (2); A plurality of annularly distributed abutment rods (31) are fixedly engaged at the connection between the insertion tube (3) and the tube body (1), and the abutment rods (31) correspond one-to-one to the insertion holes (2b).

2. The fiber tube butt sealing structure according to claim 1, characterized in that: An inner ring groove (2c) is formed on the inner ring wall of the sleeve tube (2), the annular airbag (5) is embedded in the inner ring groove (2c), and the wall of the annular airbag (5) is fixedly connected to the bottom of the inner ring groove (2c).

3. The fiber tube butt sealing structure according to claim 1, characterized in that: An abutment ring (21) for abutting against the insertion end of the insertion tube (3) is fixedly embedded in the inner tube wall of the sleeve tube (2).

4. The fiber tube butt sealing structure according to claim 1, characterized in that: Both ends of the tube body (1) are fixedly sleeved with docking flanges (6), and a plurality of bolts (8) are installed on the docking flanges (6) close to the sleeve tube (2).

5. The fiber tube butt sealing structure according to claim 4, characterized in that: The pipe head fixing sleeve of the sleeve pipe (2) is provided with a rubber compression ring (7), and the rubber compression ring (7) extends out of the sleeve pipe (2). The rubber compression ring (7) is provided with a plurality of annularly distributed oblique grooves (7a), and the groove depth of the oblique grooves (7a) decreases from the sleeve pipe (2) to the insertion pipe (3).

6. The fiber tube butt sealing structure according to claim 5, characterized in that: A screw ring (9) is sleeved on the bolt (8) and a rotatably connected abutment plate (91) is installed at the bottom of the screw ring (9). The abutment plate (91) is inserted into the oblique groove (7a) of the corresponding rubber compression ring (7).

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