Leak-proof device for high-pressure alloy steel pipe

Abstract

The invention relates to the related technical field of pipeline sealing, in particular to a high-pressure alloy steel pipe leakproof device which comprises a first pipeline and a second pipeline, a flange plate is fixedly connected to the side, close to the second pipeline, of the first pipeline, a first mounting hole is formed in the surface of one side of the flange plate, and a first positioning hole is formed in the surface of one side of the flange plate. According to the leak-proof device for the high-pressure alloy steel pipe, through the arrangement of the connecting mechanism, positioning is accurate and efficient, through the cooperation of an outer lantern ring, an inner lantern ring and a slot and the corresponding arrangement of a connecting block and a plurality of positioning holes, a pipeline, a flange plate, a connecting pipe and a chuck can be rapidly and accurately butted, the calibration time during installation is greatly shortened, and the installation efficiency is improved. Meanwhile, errors of manual operation are reduced, the installation efficiency is improved, the sealing performance is excellent, the inner hose can be tightly attached to the connecting pipe through elastic deformation to enhance the sealing performance, multiple sealing barriers are formed by combining and matching with the attaching design of the circular groove and the flange plate, and the leakage risk is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline sealing, and in particular to a high-pressure alloy steel pipe anti-leakage device. Background Art

[0002] High-pressure alloy steel pipes are specialized pipes made by adding alloying elements such as chromium, molybdenum, nickel, and vanadium to carbon steel in precise proportions. The scientific combination of these alloying elements significantly enhances the material's comprehensive mechanical properties and environmental adaptability while maintaining the fundamental properties of carbon steel. The pipes boast outstanding properties such as high strength, high-temperature resistance, corrosion resistance, and high-pressure resistance, resulting in their widespread use in fields like petrochemicals, electric power, and nuclear power projects subject to harsh operating conditions such as high temperatures, high pressures, and severe corrosion. Leakage prevention devices are used to prevent the leakage of liquids and gases at the interfaces or joints of pipelines and equipment. Their core function is to enhance the sealing of the joint surface through a sealing structure, adapting to changes in operating conditions such as pressure, temperature, and medium characteristics. Therefore, there is a particular need for leakage prevention devices for high-pressure alloy steel pipes.

[0003] Chinese patent CN221004271U announced on May 24, 2024 discloses a leak-proof gas transmission pipeline. By embedding a filter screen on the inner side of the connecting groove, the flow rate of the transmitted gas will be slowed down when filtered by the filter screen, reducing the impact of the continuous high-speed flow of gas on the transmission pipe body, and extending the service life of the transmission pipe body. The reinforcement component stabilizes the connection between the pipe sleeve and the connecting sleeve, effectively preventing the position of the pipe sleeve and the connecting sleeve from shifting when the gas transmission pipeline is in use, thereby ensuring the stability of the gas transmission pipeline during use. However, the assembly of this leak-proof gas transmission pipeline is still relatively cumbersome and requires manpower to continuously adjust the alignment. For large-scale pipeline laying projects, these complex steps need to be repeated for the assembly of each section of the pipeline, which will greatly increase construction time and labor costs and reduce construction efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-pressure alloy steel pipe anti-leakage device to solve the problem that the existing anti-leakage gas transmission pipeline proposed in the above background technology is still relatively cumbersome in assembly and requires manpower to continuously adjust the alignment. For large-scale pipeline laying projects, these complex steps need to be repeated for the assembly of each section of the pipeline, which will greatly increase construction time and labor costs and reduce construction efficiency.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a high-pressure alloy steel pipe leakage prevention device, comprising a first pipe and a second pipe, wherein a flange is fixedly connected to a side of the first pipe adjacent to the second pipe, a first mounting hole is formed on one side surface of the flange, a first positioning hole is formed on one side surface of the flange, and a connecting mechanism is provided on one side surface of the flange;

[0006] The connecting mechanism includes a connecting pipe, which is fixedly connected to one side surface of the flange, and one side surface of the connecting pipe is provided with a second mounting hole, and one side surface of the connecting pipe is provided with a fixing groove, and the inner side surface of the fixing groove is fixedly connected with a connecting block, and the inner side of the fixing groove is plugged and connected with a fixing plate, and one side surface of the fixing plate is provided with a second positioning hole, and one side surface of the fixing plate is fixedly connected with an inner hose, and the connecting block is connected with a chuck, and one side surface of the chuck is provided with a circular groove, and one side surface of the chuck is provided with a third positioning hole, and one side surface of the chuck is provided with a third mounting hole.

[0007] Preferably, an outer ring is provided on one side surface of the flange, and an inner ring is provided on one side surface of the flange. The flange, outer ring and inner ring together constitute a slot, and the slot is adapted to the size of pipe one and pipe two.

[0008] Preferably, the sizes of the fixing groove and the fixing plate are adapted to each other, the inner hose is located inside the connecting pipe, and the cross section of the connecting pipe is designed in an "I" shape.

[0009] Preferably, the circular groove is adapted to the size of the flange, and the pipe 1, pipe 2, flange, connecting pipe, fixing plate and chuck are located on the same horizontal line.

[0010] Preferably, the connecting blocks are provided with at least three of the same size and are arranged at equal distances around the horizontal and vertical center lines of the connecting pipe. The sizes of the positioning holes one, two and three are the same, and the connecting blocks are adapted to the sizes of the positioning holes one, two and three.

[0011] Preferably, the sizes of the first mounting hole, the second mounting hole and the third mounting hole are the same, and multiple mounting holes of the first mounting hole, the second mounting hole and the third mounting hole are provided with the same size.

[0012] Preferably, the inner hose is made of tetrafluoroethylene copolymer, and the flange is connected to the connecting pipe by passing bolts through the chuck.

[0013] Preferably, the cross section of the chuck is designed to be "circular", a flow hole is opened inside the chuck, and the diameters of the pipe 1 and the pipe 2 are the same.

[0014] Preferably, the vertical center line of the chuck is perpendicularly intersected with the horizontal center lines of pipe one and pipe two, and the connecting block is designed as a whole in a "cylindrical" shape.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the high-pressure alloy steel pipe anti-leakage device, through the setting of the connecting mechanism, is accurately and efficiently positioned; through the cooperation of the outer ring, the inner ring and the slot, and the corresponding setting of the connecting block and the multiple positioning holes, the pipeline, flange, connecting pipe and chuck can be quickly and accurately docked, which greatly reduces the calibration time during installation, while reducing the error of manual operation, improving installation efficiency, and having excellent sealing performance. The elastic deformation of the inner hose can tightly fit the connecting pipe to enhance the sealing performance, and combined with the fitting design of the circular groove and the flange, multiple sealing barriers are formed, which significantly reduces the risk of leakage and ensures the stable operation of the device under high-pressure conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the split structure of the slot and the pipe of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting mechanism of the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the connecting pipe of the present invention;

[0020] Figure 5 This is a schematic diagram of the split structure of the fixing plate and the fixing groove of the present invention;

[0021] Figure 6 This is a schematic diagram of the fixing groove and connecting block structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the installation structure of the fixing plate and the connecting pipe of the present invention.

[0023] In the figure: 1. Pipe 1; 2. Pipe 2; 3. Flange; 4. Mounting hole 1; 5. Outer collar; 6. Inner collar; 7. Slot; 8. Positioning hole 1; 9. Connecting mechanism; 901. Connecting pipe; 902. Mounting hole 2; 903. Fixing groove; 904. Connecting block; 905. Fixing plate; 906. Positioning hole 2; 907. Inner hose; 908. Chuck; 909. Circular groove; 910. Positioning hole 3; 911. Mounting hole 3. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-7 The present invention provides a technical solution: a high-pressure alloy steel pipe leakage prevention device, comprising a pipe 1 and a pipe 2, wherein a flange 3 is fixedly connected to the side of the pipe 1 close to the pipe 2, a mounting hole 4 is formed on one side of the flange 3, a positioning hole 8 is formed on one side of the flange 3, and a connecting mechanism 9 is provided on one side of the flange 3;

[0026] The connecting mechanism 9 includes a connecting pipe 901, which is fixedly connected to one side surface of the flange 3, a second mounting hole 902 is opened on one side surface of the connecting pipe 901, a fixing groove 903 is opened on one side surface of the connecting pipe 901, a connecting block 904 is fixedly connected to the inner side surface of the fixing groove 903, a fixing piece 905 is plugged into the inner side of the fixing groove 903, a positioning hole 906 is opened on one side surface of the fixing piece 905, and a fixing piece 905 is fixedly connected to the inner side surface of the fixing groove 903. The inner hose 907 and the connecting block 904 are connected with the chuck 908, a circular groove 909 is provided on one side of the chuck 908, a positioning hole 3 910 is provided on one side of the chuck 908, and a mounting hole 3 911 is provided on one side of the chuck 908. Through the connecting pipe 901, the mounting hole 2 902, the fixing groove 903, the connecting block 904, the fixing plate 905, the positioning hole 2 906, the inner hose 907, the chuck 908, the circular groove 909, the positioning hole 3 910 and the mounting hole 3 911 is set. When in use, the fixing piece 905 is inserted into the fixing groove 903 of the connecting pipe 901. At the same time, the connecting block 904 passes through the fixing piece 905 and the chuck 908 through the positioning hole 2 906 and the positioning hole 3 910, so that the chuck 908 and the connecting pipe 901 are accurately positioned. Then, the positioning hole 3 910 opened on the flange 3 is used to complete the positioning of the connecting pipe 901 and the flange 3. At this time, the positioning hole 1 8, the positioning hole 2 906 and the positioning hole 3 910 are aligned, and the mounting holes 1 4, The second mounting hole 902 and the third mounting hole 911 correspond to each other one by one, and are fastened by bolts penetrating the first mounting hole 4, the second mounting hole 902 and the third mounting hole 911, so as to firmly connect the flange 3, the connecting pipe 901 and the chuck 908 as a whole, further compressing the sealing structure. The inner hose 907 located inside the connecting pipe 901 is pressed by the fixing piece 905 and the chuck 908, and combined with the design of the circular groove 909 and the flange 3, a multiple sealing barrier is formed to effectively prevent leakage and improve overall safety.

[0027] Furthermore, an outer ring 5 is provided on one side surface of the flange 3, and an inner ring 6 is provided on one side surface of the flange 3. The flange 3, the outer ring 5 and the inner ring 6 together constitute a slot 7. The slot 7 is adapted to the size of pipe 1 and pipe 2 2. Through the arrangement of the slot 7, pipe 1 and pipe 2 2, when in use, the slot 7 is utilized to facilitate the positioning of the flange 3 with pipe 1 and pipe 2 2, eliminating the steps of repeated calibration of traditional flanges during docking, shortening the installation time, and reducing manual operation errors.

[0028] Furthermore, the sizes of the fixing groove 903 and the fixing plate 905 are adapted to each other, the inner hose 907 is located inside the connecting pipe 901, and the cross-section of the connecting pipe 901 is designed in an "I" shape. Through the setting of the fixing groove 903 and the fixing plate 905, when in use, since the sizes of the fixing groove 903 and the fixing plate 905 are adapted to each other, during installation, the fixing plate 905 can be accurately embedded in the fixing groove 903, achieving a close fit between the two, and effectively avoiding the displacement of the inner hose 907.

[0029] Furthermore, the circular groove 909 is adapted to the size of the flange 3, and the pipe 1 1, the pipe 2 2, the flange 3, the connecting pipe 901, the fixing plate 905, and the chuck 908 are located on the same horizontal line. Through the setting of the circular groove 909 and the flange 3, when in use, the circular groove 909 provides positioning for the flange 3, which is convenient for alignment installation. At the same time, the circular groove 909 is precisely adapted to the flange 3, which greatly improves the sealing of the connection between the two and significantly reduces the possibility of leakage caused by the existence of gaps.

[0030] Furthermore, the connecting blocks 904 are provided with at least three of the same size, and are arranged at equal distances around the horizontal and vertical center lines of the connecting pipe 901. The sizes of the positioning hole 1 8, the positioning hole 2 906 and the positioning hole 3 910 are the same. The connecting block 904 is adapted to the sizes of the positioning hole 1 8, the positioning hole 2 906 and the positioning hole 3 910. Through the setting of the connecting block 904, when in use, the connecting block 904 can be accurately inserted into the corresponding positioning hole. In this process, the equidistantly arranged connecting blocks 904 can guide the flange 3, the connecting pipe 901, the fixing plate 905 and the chuck 908 to quickly find the corresponding position, ensuring that the components are aligned on the same horizontal and vertical lines, laying the foundation for subsequent steps such as bolt tightening.

[0031] Furthermore, the sizes of mounting hole 1 4, mounting hole 2 902 and mounting hole 3 911 are the same, and mounting hole 1 4, mounting hole 2 902 and mounting hole 3 911 are all provided with multiple of the same size. Through the provision of mounting hole 1 4, mounting hole 2 902 and mounting hole 3 911, when in use, the design of multiple mounting holes of the same size ensures that the bolts can pass through smoothly, so that the forces on each component are balanced, and deformation of the components due to excessive local forces is avoided, thereby enhancing the overall connection strength and stability of the device.

[0032] Furthermore, the inner hose 907 is made of tetrafluoroethylene copolymer, and the flange 3 is connected to the connecting pipe 901 through the chuck 908 by bolts. Through the setting of the inner hose 907, when in use, the advantages of tetrafluoroethylene copolymer are utilized, such as corrosion resistance, high temperature resistance and aging resistance. It can adapt to various corrosive media transported by high-pressure alloy steel pipes and high-temperature and high-pressure working environments, ensuring that the inner hose 907 can perform a long-term and stable sealing function and improve the service life of the mechanism.

[0033] Furthermore, the cross-section of the chuck 908 is designed to be "circular", and a flow hole is opened inside the chuck 908. The diameters of pipe 1 1 and pipe 2 2 are the same. Through the setting of the chuck 908, when in use, a flow hole is opened inside the chuck 908. Since the diameters of pipe 1 1 and pipe 2 2 are the same, after the device is assembled, the flow hole can be precisely connected with the internal channels of pipe 1 1 and pipe 2 2 to ensure flow stability.

[0034] Furthermore, the vertical center line of the chuck 908 is perpendicular to the horizontal center lines of pipe 1 and pipe 2 2, and the connecting block 904 is designed as a "cylindrical" as a whole. Through the setting of the connecting block 904, when in use, the connecting block 904 with a "cylindrical" design is subjected to more uniform force, reducing the wear or deformation of the connecting block 904 and improving its service life.

[0035] Working principle: First, insert pipe 1 and pipe 2 into the slot 7 on the outside of flange 3, and use the outer ring 5 and inner ring 6 to restrict pipe 1 and pipe 2 to complete precise docking, so that flange 3 and pipe 1 and pipe 2 are initially fixed, which is convenient for later welding and fixing. The fixing piece 905 is inserted into the fixing groove 903 of the connecting pipe 901, and at the same time, the connecting block 904 passes through the fixing piece 905 and the chuck 908 through the positioning hole 2 906 and the positioning hole 3 910, so that the chuck 908 and the connecting pipe 901 are accurately positioned, and then the positioning hole 3 910 opened on the flange 3 is used to complete the positioning of the connecting pipe 901 and the flange 3. At this time, the positioning hole 1 8, the positioning hole 2 906 and the positioning hole 3 910 are aligned, the mounting hole 1 4, the mounting hole 2 902 and the mounting hole 3 911 correspond to each other, and the bolts are passed through the mounting hole 1 4, the mounting hole 2 902 and the mounting hole 3 911 to tighten them, and the flange 3, the connecting pipe 901 and the chuck 908 are firmly connected as a whole, and the sealing structure is further compressed. The inner hose 907 inside the connecting pipe 901 is pressed and fixed by the fixing piece 905 and the chuck 908, and the design of the circular groove 909 and the flange 3 constitutes a multiple sealing barrier to effectively prevent leakage. In this way, the use process of a high-pressure alloy steel pipe anti-leakage device is completed.

[0036] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-pressure alloy steel pipe anti-leakage device, comprising a pipe 1 (1) and a pipe 2 (2), characterized in that: A flange (3) is fixedly connected to one side of the pipe (1) close to the pipe (2), a mounting hole (4) is provided on one side surface of the flange (3), a positioning hole (8) is provided on one side surface of the flange (3), and a connecting mechanism (9) is provided on one side surface of the flange (3); The connecting mechanism (9) includes a connecting pipe (901), the connecting pipe (901) is fixedly connected to one side surface of the flange (3), a second mounting hole (902) is provided on one side surface of the connecting pipe (901), a fixing groove (903) is provided on one side surface of the connecting pipe (901), a connecting block (904) is fixedly connected to the inner side surface of the fixing groove (903), and a fixing plate (905) is plugged and connected to the inner side of the fixing groove (903). A second positioning hole (906) is provided on one side surface of the fixing plate (905), an inner hose (907) is fixedly connected to one side surface of the fixing plate (905), a chuck (908) is passed through the connecting block (904), a circular groove (909) is provided on one side surface of the chuck (908), a third positioning hole (910) is provided on one side surface of the chuck (908), and a third mounting hole (911) is provided on one side surface of the chuck (908).

2. A high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: An outer ring (5) is provided on one side surface of the flange (3), and an inner ring (6) is provided on one side surface of the flange (3). The flange (3), the outer ring (5) and the inner ring (6) together form a slot (7), and the slot (7) is adapted to the size of the pipe 1 (1) and the pipe 2 (2).

3. The high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: The sizes of the fixing groove (903) and the fixing plate (905) are adapted to each other, the inner hose (907) is located inside the connecting pipe (901), and the cross section of the connecting pipe (901) is designed in the shape of an "I".

4. The high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: The circular groove (909) is adapted to the size of the flange (3), and the pipe one (1), pipe two (2), flange (3), connecting pipe (901), fixing plate (905), and chuck (908) are located on the same horizontal line.

5. The high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: The connecting blocks (904) are provided with at least three of the same size and are arranged at equal distances around the horizontal and vertical center lines of the connecting pipe (901); the sizes of the positioning hole one (8), the positioning hole two (906) and the positioning hole three (910) are the same; the connecting block (904) is adapted to the sizes of the positioning hole one (8), the positioning hole two (906) and the positioning hole three (910).

6. The high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: The sizes of the mounting hole 1 (4), the mounting hole 2 (902) and the mounting hole 3 (911) are the same, and the mounting hole 1 (4), the mounting hole 2 (902) and the mounting hole 3 (911) are all provided with multiple holes of the same size.

7. The high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: The inner hose (907) is made of tetrafluoroethylene copolymer material, and the flange (3) is connected to the connecting pipe (901) by means of bolts penetrating the chuck (908).

8. The high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: The cross section of the chuck (908) is designed to be "circular", a flow hole is opened inside the chuck (908), and the diameters of the pipe 1 (1) and the pipe 2 (2) are the same.

9. The high-pressure alloy steel pipe anti-leakage device according to claim 1, characterized in that: The vertical center line of the chuck (908) is perpendicular to the horizontal center lines of the pipe one (1) and the pipe two (2), and the connecting block (904) is designed as a "cylindrical" as a whole.

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