Pipe end connecting structure of oil and gas exploitation bimetal composite pipe

Abstract

The utility model relates to the field of pipeline connection, and discloses an oil and gas exploitation bimetal composite pipe end connecting structure which comprises a connecting pipe, sealing assemblies are arranged at the left end and the right end of the connecting pipe, push plates are connected to the left end and the right end of the connecting pipe in a threaded mode, and threads are arranged at the left end and the right end of the connecting pipe. Push columns are slidably connected to the left end and the right end of the connecting pipe, two clamping blocks are rotatably connected to the interiors of the left end and the right end of the connecting pipe, springs are fixedly connected to the interiors of the left end and the right end of the connecting pipe, and the upper end of one spring is fixedly connected to the lower portion of the left side of one clamping block; and one end of each of the two clamping blocks is slidably connected to the interior of one of the push columns. According to the pipeline quick mounting and dismounting device, through cooperation of the connecting pipe, the two push plates, the two push columns, the multiple clamping blocks, the multiple springs, the multiple sliding grooves, the pipelines and the multiple rotating grooves, the quick mounting and dismounting functions of the two pipelines are achieved.

Description

Technical Field

[0001] The utility model relates to the field of pipeline connection, in particular to a bimetallic composite pipe end connection structure for oil and gas exploitation. Background Art

[0002] In traditional oil and gas extraction, pipeline materials are made of single metals, such as carbon steel or stainless steel, which have limitations in strength or corrosion resistance, especially when the oil and gas contain high concentrations of corrosive components such as hydrogen sulfide (H2S). To solve these problems, the oil and gas extraction industry has begun to use bimetallic composite pipes, which can combine the advantages of two different materials, such as high-strength steel on the outer layer and corrosion-resistant stainless steel on the inner layer.

[0003] Existing technologies include: welding: provides a durable connection, suitable for high-pressure environments, and does not require additional connectors; mechanical connection: convenient for installation and disassembly, suitable for situations that require frequent maintenance or replacement, and does not require special welding processes; transition joints: can connect pipes of different materials, ensuring material compatibility and flexible application in a variety of situations; sealing technology: ensures the air tightness and liquid tightness of the pipe joints, prevents leakage, and improves the reliability and safety of the system.

[0004] However, in order to ensure the safety of pipeline connection, the existing pipeline connection devices use a large number of screws and nuts to connect the components during installation. The installation process brings many inconveniences to the construction workers. They need to align and tighten them one by one. If they are not careful, the connection will be loose and there will be safety hazards such as leakage. Especially in large pipeline systems, this traditional connection method is not only inefficient, but also prone to errors. Therefore, an oil and gas production bimetallic composite pipe end connection structure is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a bimetallic composite pipe end connection structure for oil and gas production, aiming to improve the problem in the prior art that the pipeline connection process is cumbersome and prone to safety hazards such as loose connection and leakage.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bimetallic composite pipe end connection structure for oil and gas production, including a connecting pipe, a sealing assembly is provided at both ends of the connecting pipe, push plates are threadedly connected at both ends of the connecting pipe, threads are provided at both ends of the connecting pipe, push columns are slidably connected at both ends of the connecting pipe, two clamping blocks are rotatably connected inside the left and right ends of the connecting pipe, springs are fixedly connected inside the left and right ends of the connecting pipe, the upper end of one of the springs is fixedly connected to the lower left part of one of the clamping blocks, one end of the two clamping blocks is slidably connected to the inside of one of the push columns, two rotating grooves are provided at both ends of the connecting pipe, sliding grooves are provided on the upper and lower sides of the inner walls of the two push columns, a pipeline is slidably connected to the inside of one of the push columns, and an installation groove is provided at the upper left end of the pipeline.

[0007] Furthermore, the sealing assembly includes two protective layers, one of which is fixedly connected to the inner right side of one of the push pins, one of which is fixedly connected to the inner wall of the protective layer with a sealing layer, and one of which is fixedly connected to the inner wall of the sealing layer with a supporting layer.

[0008] Furthermore, one of the clamping blocks slides inside one of the sliding grooves.

[0009] Furthermore, one of the spring bottoms is fixedly connected to the inside of one of the rotation grooves, and one of the clamping blocks is rotationally connected to the inside of one of the rotation grooves.

[0010] Furthermore, a sealing groove is provided on one side of the two push pins that are far from each other, and the two protective layers are respectively fixedly connected to the inside of the two sealing grooves.

[0011] Furthermore, one of the supporting layers is made of carbon steel.

[0012] Furthermore, one of the sealing layers is made of fluororubber.

[0013] Furthermore, one of the protective layers is made of stainless steel.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, align the installation groove with the positions of the two clamping blocks, and then push the pipe into the push column. The right ends of the two clamping blocks will be squeezed and opened. At this time, the left ends of the two clamping blocks will be embedded in the inside of the connecting pipe. When the right ends of the two clamping blocks are respectively embedded in the installation grooves, the two springs will push the two clamping blocks back to their positions, and then rotate the push plate on the right side. At this time, the push plate will push the push column on the right side to move to the right to squeeze the left side of the pipe. Continue to rotate the push plate until the push column is tied to complete the installation of the pipe at one end. Repeat this process on the left side to install and connect the two pipes together, rotate the push plate on the right side in the opposite direction, and then pull the push column to the left. At this time, the slide groove will squeeze one end of the two clamping blocks on the right side to squeeze the left ends of the two clamping blocks down. At this time, the right ends of the two clamping blocks will open, and then the pipe can be taken out. Repeat this operation on the left side to achieve quick installation, connection and disassembly of the pipe.

[0016] 2. In the utility model, a multi-layer sealing group is set as a three-layer stacked structure, the outer layer is a protective layer, the protective layer is made of stainless steel, stainless steel has good corrosion resistance and pressure resistance, the middle layer is a sealing layer, the sealing layer is made of fluororubber, fluororubber has excellent oil resistance, high temperature resistance and chemical corrosion resistance, the inner layer is a supporting layer, the supporting layer is made of carbon steel, carbon steel has good strength and corrosion resistance, and the sealing effect is achieved by stacking the three-layer structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of a bimetallic composite pipe end connection structure for oil and gas production proposed by the utility model;

[0018] Figure 2 This is a structural schematic diagram of a push column of a bimetallic composite pipe end connection structure for oil and gas production proposed by the utility model;

[0019] Figure 3 This is a structural schematic diagram of a clamping block of a bimetallic composite pipe end connection structure for oil and gas production proposed by the utility model;

[0020] Figure 4 This is a structural schematic diagram of a support layer of a bimetallic composite pipe end connection structure for oil and gas production proposed by the utility model.

[0021] Legend:

[0022] 1. Connecting pipe; 2. Push plate; 3. Push column; 4. Clamping block; 5. Spring; 6. Slide groove; 7. Pipeline; 8. Support layer; 9. Sealing layer; 10. Protective layer; 11. Installation groove; 12. Rotation groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-Figure 3 , an embodiment provided by the utility model: a bimetallic composite pipe end connection structure for oil and gas production, comprising a connecting pipe 1, the connecting pipe 1 is used to provide a structural frame support for the connection, sealing components are provided at both ends of the connecting pipe 1, and push plates 2 are threadedly connected to the left and right ends of the connecting pipe 1, and the two push plates 2 are threadedly connected to the outer periphery of the connecting pipe 1 to provide pushing support and fastening of the push column 3, and threads are provided at both ends of the connecting pipe 1. Two rotating grooves 12 are provided at both ends of the connecting pipe 1, and the plurality of rotating grooves 12 are used to provide installation and rotation space for a plurality of clamping blocks 4 and a plurality of springs 5 ​​respectively. Two clamping blocks 4 are rotatably connected inside the left and right ends of the connecting pipe 1, and the two clamping blocks 4 are used to be respectively clamped inside the two installation grooves 11, and springs 5 ​​are fixedly connected inside the left and right ends of the connecting pipe 1, and the plurality of springs 5 ​​are used to provide return power to the plurality of clamping blocks 4 respectively, and the upper end of one of the springs 5 ​​is fixedly connected to the lower left side of one of the clamping blocks 4, and one of the springs 5 ​​is fixedly connected to the lower left side of one of the clamping blocks 4. One of the clamping blocks 4 can be pulled back, and the bottom of one of the springs 5 ​​is fixedly connected to the inside of one of the rotating grooves 12, and one of the clamping blocks 4 is rotatably connected to the inside of one of the rotating grooves 12. The left and right ends of the connecting pipe 1 are slidably connected with push columns 3, and one of the push columns 3 is used to move and clamp one side of the pipe 7. The inner walls of the two push columns 3 are provided with slide grooves 6 on the upper and lower sides, and one of the slide grooves 6 is used to provide sliding space for the upper end of one of the clamping blocks 4. The inside of one of the push columns 3 is slidably connected with the pipe 7, and the upper left end of the pipe 7 is provided with an installation groove 11, and one of the installation grooves 11 is used to provide space for one of the clamping blocks 4 to be inserted. One end of the two clamping blocks 4 is slidably connected to the inside of one of the push columns 3, and one of the clamping blocks 4 slides inside one of the slide grooves 6. When one of the push columns 3 moves to the right, it will squeeze the pipe 7, and when one of the push columns 3 moves to the left, the inclined surface of the slide groove 6 will press the left end of one of the clamping blocks 4 to drop.

[0025] Reference Figure 2 and Figure 4The sealing assembly includes two protective layers 10. Sealing grooves are provided on the far sides of the two push pillars 3. The two sealing grooves are used to install the two protective layers 10 respectively. The two protective layers 10 are fixedly connected to the inside of the two sealing grooves respectively. One of the protective layers 10 is made of stainless steel, which has good corrosion resistance and pressure resistance. One of the protective layers 10 is fixedly connected to the right side of the inside of one of the push pillars 3. A sealing layer 9 is fixedly connected to the inner wall of one of the protective layers 10. One of the sealing layers 9 is made of fluororubber, which has excellent oil resistance, high temperature resistance and chemical corrosion resistance. A supporting layer 8 is fixedly connected to the inner wall of one of the sealing layers 9. One of the supporting layers 8 is made of carbon steel, which has good strength and corrosion resistance. The stacking of multiple layers of materials can ensure the safe sealing and reliable operation of the pipeline 7 connection.

[0026] Working principle: When using the device, first align the two installation grooves 11 with the positions of the two clamping blocks 4, and then push the pipe 7 into the inside of the push column 3. At this time, the right ends of the two clamping blocks 4 will be squeezed and opened, and the left ends of the two clamping blocks 4 will be embedded in the inside of the connecting pipe 1. At this time, the two springs 5 ​​will be squeezed and contracted. When the two clamping blocks 4 are completely stuck in the two installation grooves 11, the two springs 5 ​​will push the two clamping blocks 4 back to be completely stuck, and then rotate the push plate 2 on the right. At this time, the push plate 2 will squeeze the push column 3 on the right to move to the right to squeeze the left side of the pipe 7. Continue to rotate the right push plate 2 to tie the push column 3 on the right to complete the connection of one end of the pipe 7, and then repeat the above steps on the left to complete the quick connection of the two pipes 7. Rotate the push plate 2 on the right in the opposite direction, and then pull the push column 3 to the left. At this time, the slide groove 6 will squeeze one end of the two clamping blocks 4 on the right to The left end is squeezed down, at which time the right ends of the two clamps 4 will open, and then the pipe 7 can be taken out, thereby realizing the rapid disassembly of the pipe 7. In order to ensure a good seal of the connection, a three-layer material nested structure is used to achieve sealing, wherein the outer side is a protective layer 10, and the protective layer 10 is made of stainless steel. A stainless steel sheet is placed on the outer surface of the fluororubber sealing pad to enhance its pressure resistance and wear resistance, while protecting the sealing filling layer from the influence of the external environment. The middle is a sealing layer 9, and the sealing layer 9 is made of fluororubber. The fluororubber sealing pad is nested inside the carbon steel base support layer 8 to ensure effective sealing performance and durability. The inside is a support layer 8, and the support layer 8 is made of carbon steel. The carbon steel pad is directly placed on the surface of the pipe 7 interface to provide structural support and stability. The combination of the three-layer structure can give full play to the advantages of different materials and increase the reliability of the sealing component.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bimetallic composite pipe end connection structure for oil and gas production, comprising a connecting pipe (1), characterized in that: The left and right ends of the connecting tube (1) are provided with sealing components, the left and right ends of the connecting tube (1) are threadedly connected with push plates (2), the left and right ends of the connecting tube (1) are provided with threads, the left and right ends of the connecting tube (1) are slidably connected with push columns (3), the left and right ends of the connecting tube (1) are rotatably connected with two clamping blocks (4), the left and right ends of the connecting tube (1) are fixedly connected with springs (5), the upper end of one of the springs (5) is fixedly connected to the lower left side of one of the clamping blocks (4), one end of the two clamping blocks (4) is slidably connected to the inside of one of the push columns (3), the left and right ends of the connecting tube (1) are provided with two rotation grooves (12), the upper and lower sides of the inner walls of the two push columns (3) are provided with sliding grooves (6), the inside of one of the push columns (3) is slidably connected with a pipe (7), and the left end of the pipe (7) is provided with a mounting groove (11).

2. The bimetallic composite pipe end connection structure for oil and gas production according to claim 1, characterized in that: The sealing assembly comprises two protective layers (10), one of the protective layers (10) being fixedly connected to the inner right side of one of the push pins (3), one of the protective layers (10) having an inner wall fixedly connected to a sealing layer (9), and one of the sealing layers (9) having an inner wall fixedly connected to a supporting layer (8).

3. The bimetallic composite pipe end connection structure for oil and gas production according to claim 1, characterized in that: One of the clamping blocks (4) slides inside one of the sliding grooves (6).

4. The bimetallic composite pipe end connection structure for oil and gas production according to claim 1, characterized in that: The bottom of one of the springs (5) is fixedly connected to the inside of one of the rotating grooves (12), and one of the clamping blocks (4) is rotatably connected to the inside of one of the rotating grooves (12).

5. The bimetallic composite pipe end connection structure for oil and gas production according to claim 2, characterized in that: A sealing groove is provided on the far side of the two push pins (3), and the two protective layers (10) are respectively fixedly connected inside the two sealing grooves.

6. The bimetallic composite pipe end connection structure for oil and gas production according to claim 2, characterized in that: One of the supporting layers (8) is made of carbon steel.

7. The bimetallic composite pipe end connection structure for oil and gas production according to claim 2, characterized in that: One of the sealing layers (9) is made of fluororubber.

8. The bimetallic composite pipe end connection structure for oil and gas production according to claim 2, characterized in that: One of the protective layers (10) is made of stainless steel.

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