Self-sealing connecting structure of gas pipe fitting

Abstract

The invention relates to the technical field of pipe fitting self-sealing, and discloses a gas pipe fitting self-sealing connecting structure which comprises a first gas pipe, a first flange plate is fixedly connected to the outer side of the first gas pipe, and a second flange plate is connected to one side of the first flange plate through a connecting piece. A first gas pipe is fixedly connected to the interior of the first flange plate, a second gas pipe is fixedly connected to the interior of the second flange plate, a second internal thread is arranged in the first gas pipe, a first internal thread is arranged in the second gas pipe, the interior of the first gas pipe is in threaded connection with a connecting pipe through the second internal thread, and a bidirectional external thread is arranged on the outer surface of the connecting pipe. According to the gas pipe connecting device, the two first sealing rings are rotated to make the first sealing rings abut against the sealing rings, then by rotating the second anti-skid nuts, the first sealing rings abut against the sealing rings more tightly through the abutting rings, and therefore the connecting positions of the connecting pipe and the first gas pipe and the connecting positions of the connecting pipe and the second gas pipe can be sealed.

Description

Technical Field

[0001] The invention relates to the technical field of pipe fitting self-sealing, and in particular to a gas pipe fitting self-sealing connection structure. Background Art

[0002] Pipe self-sealing technology is a technology used for pipe connection and sealing. It can achieve automatic sealing in the pipeline system to avoid leakage and improve the reliability of the system. This technology is mainly used in the fields of petroleum, natural gas, chemical industry, water supply, etc. It has the advantages of improving sealing and reducing leakage risks. Pipe self-sealing technology improves the sealing and reliability of the pipeline system through innovative design and materials, and is suitable for various demanding industrial applications.

[0003] The existing self-sealing connection structure of gas pipe fittings is mainly sealed by threaded connection and then assisted by raw tape or sealing glue. However, this sealing connection method is easily limited by the proficiency of manual operation when using raw tape or sealing glue, which will cause gas pipelines to leak due to poor connection, which not only creates a safety hazard in use, but also wastes a lot of time, manpower and material resources in subsequent fault detection and maintenance. Summary of the invention

[0004] In order to remedy the above deficiencies, the present invention provides a self-sealing connection structure for gas pipe fittings, aiming to improve the self-sealing connection structure for gas pipe fittings, which may cause gas pipeline leakage due to poor connection due to the limitation of manual operation proficiency when using raw tape or sealing glue.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-sealing connection structure of a gas pipe, comprising a first gas pipe, a first flange fixedly connected to the outer side of the first gas pipe, a second flange connected to one side of the first flange via a connecting piece, a second gas pipe fixedly connected to the inside of the second flange, a second internal thread provided inside the first gas pipe, a first internal thread provided inside the second gas pipe, a connecting pipe threadedly connected to the inside of the first gas pipe via the second internal thread, the inside of the second gas pipe threadedly connected to the other end of the connecting pipe via the first internal thread, a bidirectional external thread provided on the outer surface of the connecting pipe, and a second internal thread provided on the inner side of the connecting pipe. The two end portions of the connecting pipe are fixedly connected with a second sealing ring, the outer surface of the connecting pipe is symmetrically threaded with a second anti-slip nut through a two-way external thread, the side away from the second anti-slip nut is fixedly connected with a resistance ring, the outer surface of the connecting pipe is symmetrically threaded with a first sealing ring through a two-way external thread, the first sealing ring is located on the side away from the resistance ring, an annular groove is provided inside the first gas pipe, the inside of the annular groove is fixedly connected with a sealing ring, the inside of the second gas pipe is provided with an annular groove, the inside of the annular groove is fixedly connected with a sealing ring, the first sealing ring conflicts with the sealing ring, and the inner wall of the connecting pipe is fixedly connected with a limiting ring.

[0006] Preferably, a spring is fixedly connected to one side of the limiting ring, and the spring is spiral-shaped. A sleeve is fixedly connected to one side of the limiting ring.

[0007] Preferably, the outer wall of the sleeve is fixedly connected to the inner wall of the connecting pipe, a groove is provided inside the sleeve, an annular magnetic block is fixedly connected inside the groove, and a through hole is provided inside the sleeve.

[0008] Preferably, the spring is located in a through hole, the through hole is in the shape of a flat-top cone, a steel ball is arranged inside the through hole, and the diameter of the through hole at one end away from the limiting ring is 5mm-10mm smaller than that of the steel ball.

[0009] Preferably, the thread direction of the bidirectional external thread matches the first internal thread and the second internal thread.

[0010] Preferably, the inner wall of the annular magnetic block matches the through hole, and the steel ball is located on a side of the spring close to the annular magnetic block.

[0011] Preferably, the inner wall of the sealing ring is in the shape of a flat-top cone, and the diameter of the inner wall on the opposite side of the sealing ring is larger than the diameter on the side facing away from it.

[0012] Preferably, the connecting member includes a plurality of bolts, the outer walls of the second flange and the first flange are evenly provided with threaded holes, and the bolts penetrate through the threaded holes of the second flange and the first flange and are threadedly connected with a first anti-slip nut.

[0013] Preferably, a magnetic block is threadedly connected to the middle portion of the bolt, and the magnetic block matches the steel ball.

[0014] Working principle: When in use, the two ends of the connecting pipe are respectively connected to the inside of the first gas pipe and the second gas pipe through a two-way thread, and then the two first sealing rings are rotated in a direction away from each other to make them conflict with the sealing rings, and then the second anti-slip nut is rotated to drive the conflict ring so that the conflict between the first sealing ring and the sealing ring can be tighter, so that the connection between the connecting pipe and the first gas pipe and the second gas pipe can be sealed, and then the first flange and the second flange are connected through the connecting piece to improve the stability between the first gas pipe and the second gas pipe; the steel ball is limited by the spring to prevent it from escaping from the inside of the through hole, when the gas is transported from the first gas pipe to the second gas pipe through the connecting pipe The steel balls are limited by the annular magnetic block to prevent them from blocking the through-holes, allowing the gas to be transported. When the gas at the second gas pipe leaks, the gas flow rate inside the connecting pipe will increase, thereby driving the steel balls to break away from the limit of the annular magnetic block, causing the steel balls to roll toward the second gas pipe, thereby blocking the through-holes, thereby preventing continuous leakage of the gas. When the gas pipeline is repaired and the gas can be transported again, the magnetic block is rotated to move horizontally left and right on the bolts, thereby attracting the steel balls to a certain extent through the magnetic block, allowing the steel balls to move in the through-holes, so that the steel balls no longer block the through-holes, allowing the gas to be transported again.

[0015] The present invention has the following beneficial effects: 1. In the present invention, the two ends of the connecting pipe are respectively connected to the inside of the first gas pipe and the second gas pipe, and then the two first sealing rings are rotated to make them contact with the sealing rings, and then the second anti-slip nut is rotated to make the first sealing rings and the sealing rings contact more tightly through the contact rings, so that the connection between the connecting pipe and the first gas pipe and the second gas pipe can be sealed, which improves the self-sealing connection structure of the gas pipe fitting. When using raw tape or sealing glue, the gas pipeline may leak due to poor connection due to the limitation of manual operation proficiency.

[0016] 2. In the present invention, when the gas is transported from the first gas pipe to the second gas pipe through the connecting pipe, the steel ball is limited by the annular magnetic block to allow the gas to be transported. When the gas at the second gas pipe leaks, the gas flow inside the connecting pipe will increase, thereby driving the steel ball to break away from the limit of the annular magnetic block, thereby blocking the through hole with the steel ball, thereby preventing continuous leakage of the gas.

[0017] 3. In the present invention, when the gas pipeline is repaired and gas can be transported again, the magnetic block is rotated to move horizontally left and right on the bolt, so that the steel ball is attracted to a certain extent by the magnetic block, so that the steel ball can move left and right in the through hole, so that the steel ball will no longer block the through hole, so that gas can be transported again, thereby improving the practicality of the self-sealing connection structure of the gas pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a self-sealing connection structure for a gas pipe proposed by the present invention; Figure 2 This is a structural explosion diagram of a self-sealing connection structure of a gas pipe proposed by the present invention; Figure 3 A schematic diagram of the interior of a first gas pipe of a gas pipe self-sealing connection structure proposed by the present invention; Figure 4 A schematic diagram of a connecting pipe of a self-sealing connecting structure of a gas pipe provided by the present invention; Figure 5 A schematic diagram of the interior of a connecting pipe of a self-sealing connecting structure of a gas pipe provided by the present invention; Figure 6 A schematic diagram of the interior of a sleeve of a self-sealing connection structure for a gas pipe provided by the present invention; Figure 7 A schematic diagram of an annular magnetic block of a self-sealing connection structure for a gas pipe proposed by the present invention.

[0019] Legend: 1. First gas pipe; 2. First flange; 3. Bolt; 4. Magnet; 5. Second gas pipe; 6. First anti-slip nut; 7. Second flange; 8. Second anti-slip nut; 9. Connecting pipe; 10. Contact ring; 11. First sealing ring; 12. Second sealing ring; 13. Annular groove; 14. Sealing ring; 15. First internal thread; 16. Second internal thread; 17. Bidirectional external thread; 18. Sleeve; 19. Limiting ring; 20. Spring; 21. Steel ball; 22. Annular magnet; 23. Groove; 24. Through hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below 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 creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 4An embodiment of the present invention is a self-sealing connection structure of a gas pipe, comprising a first gas pipe 1, a first flange 2 is fixedly connected to the outside of the first gas pipe 1, a second flange 7 is connected to one side of the first flange 2 through a connecting piece, a second gas pipe 5 is fixedly connected to the inside of the second flange 7, a second internal thread 16 is arranged inside the first gas pipe 1, a first internal thread 15 is arranged inside the second gas pipe 5, a connecting pipe 9 is threadedly connected to the inside of the first gas pipe 1 through the second internal thread 16, the inside of the second gas pipe 5 is threadedly connected to the other end of the connecting pipe 9 through the first internal thread 15, a bidirectional external thread 17 is arranged on the outer surface of the connecting pipe 9, and both ends of the connecting pipe 9 are fixed A second sealing ring 12 is connected, and the outer surface of the connecting pipe 9 is symmetrically threadedly connected with the second anti-slip nut 8 through a two-way external thread 17, and a resistance ring 10 is fixedly connected to the side away from the second anti-slip nut 8. The outer surface of the connecting pipe 9 is symmetrically threadedly connected with the first sealing ring 11 through the two-way external thread 17, and the first sealing ring 11 is located on the side away from the resistance ring 10. An annular groove 13 is provided inside the first gas pipe 1, and a sealing ring 14 is fixedly connected inside the annular groove 13. An annular groove 13 is provided inside the second gas pipe 5, and a sealing ring 14 is fixedly connected inside the annular groove 13. The first sealing ring 11 conflicts with the sealing ring 14, and a limiting ring 19 is fixedly connected to the inner wall of the connecting pipe 9.

[0022] Specifically, the first flange 2 is connected to the second flange 7 by a connecting piece to improve the stability between the first gas pipe 1 and the second gas pipe 5, and the first gas pipe 1 is connected to the inside of the second gas pipe 5 by a connecting pipe 9. The two first sealing rings 11 on the connecting pipe 9 are rotated to make it approach or move away from the sealing ring 14, and the second anti-slip nut 8 is rotated to drive the resistance ring 10 to rotate, so that the resistance ring 10 and the first sealing ring 11 are approached or moved away. The first sealing ring 11 and the sealing ring 14 can be made to resist and seal through the resistance ring 10, and the second anti-slip nut 8 is used to prevent it from loosening, so that the connection between the connecting pipe 9 and the first gas pipe 1 and the second gas pipe 5 can be sealed, thereby improving the self-sealing connection structure of the gas pipe fittings, which is easily limited by the proficiency of manual operation when using raw tape or sealing glue, and will cause gas leakage due to poor connection of the gas pipeline.

[0023] Reference Figure 5-Figure 7A spring 20 is fixedly connected to one side of the limit ring 19, and the spring 20 is spiral-shaped. A sleeve 18 is fixedly connected to one side of the limit ring 19; the outer wall of the sleeve 18 is fixedly connected to the inner wall of the connecting pipe 9, and a groove 23 is arranged inside the sleeve 18, and an annular magnetic block 22 is fixedly connected inside the groove 23, and a through hole 24 is arranged inside the sleeve 18; the spring 20 is located in the through hole 24, and the shape of the through hole 24 is a flat-topped cone. A steel ball 21 is arranged inside the through hole 24, and the diameter of the through hole 24 away from the end of the limit ring 19 is 5mm-10mm smaller than that of the steel ball 21; the thread direction of the bidirectional external thread 17 matches the first internal thread 15 and the second internal thread 16; the inner wall of the annular magnetic block 22 matches the through hole 24, and the steel ball 21 is located on the side of the spring 20 close to the annular magnetic block 22.

[0024] Specifically, when the gas is transported from the first gas pipe 1 to the second gas pipe 5 through the connecting pipe 9, the steel ball 21 is limited by the annular magnetic block 22 to prevent the steel ball 21 from blocking the through hole 24 inside the sleeve 18. When the gas at the second gas pipe 5 leaks, the gas flow inside the connecting pipe 9 will increase, which will drive the steel ball 21 to break away from the limit of the annular magnetic block 22, so that the steel ball 21 rolls toward the second gas pipe 5, so that the steel ball 21 blocks the through hole 24, thereby preventing continuous leakage of the gas, increasing the practicality of the self-sealing connection structure of the gas pipe fittings, and when there is no gas leakage, the steel ball 21 is limited by the spring 20 to prevent it from escaping from the through hole 24.

[0025] Reference Figure 1-Figure 3 The inner wall of the sealing ring 14 is in a flat-topped cone shape, and the inner wall diameter of the sealing ring 14 on the opposite side is larger than the diameter of the side away from it; the connecting piece includes a plurality of bolts 3, and the outer walls of the second flange 7 and the first flange 2 are evenly provided with threaded holes, and the bolts 3 pass through the threaded holes of the second flange 7 and the first flange 2 and are threadedly connected with the first anti-slip nut 6; the middle part of the bolt 3 is threadedly connected with a magnetic block 4, and the magnetic block 4 matches the steel ball 21.

[0026] Specifically, the first flange 2 and the second flange 7 can be connected by matching the four bolts 3 and the four nuts 6. After the gas leaks, the steel ball 21 blocks the through hole 24. When the gas pipeline is repaired and the gas can be transported again, the magnetic block 4 is rotated to move horizontally left and right on the bolt 3. The magnetic block 4 can attract the steel ball 21 in the through hole 24 to a certain extent, so that the steel ball 21 can move in the through hole 24, so that the steel ball 21 no longer blocks the through hole 24, and the gas can be transported again, thereby improving the practicality of the self-sealing connection structure of the gas pipe fitting.

[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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to 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 self-sealing connection structure for a gas pipe, comprising a first gas pipe (1), Features: The first gas pipe (1) is fixedly connected to a first flange (2) on its outer side, one side of the first flange (2) is connected to a second flange (7) via a connecting piece, the second flange (7) is fixedly connected to a second gas pipe (5) inside, the first gas pipe (1) is provided with a second internal thread (16) inside, the second gas pipe (5) is provided with a first internal thread (15) inside, the first gas pipe (1) is threadedly connected to a connecting pipe (9) via the second internal thread (16), the second gas pipe (5) is threadedly connected to the other end of the connecting pipe (9) via the first internal thread (15), the outer surface of the connecting pipe (9) is provided with a bidirectional external thread (17), both ends of the connecting pipe (9) are fixedly connected to a second sealing ring (12), the outer surface of the connecting pipe (9) is provided with a second internal thread (16), and the second internal thread (15) is threadedly connected to the other end of the connecting pipe (9). A second anti-slip nut (8) is symmetrically threadedly connected to the surface via a bidirectional external thread (17); a side away from the second anti-slip nut (8) is fixedly connected to a resistance ring (10); an outer surface of the connecting pipe (9) is symmetrically threadedly connected to a first sealing ring (11) via a bidirectional external thread (17); the first sealing ring (11) is located on a side away from the resistance ring (10); an annular groove (13) is provided inside the first gas pipe (1); a sealing ring (14) is fixedly connected inside the annular groove (13); an annular groove (13) is provided inside the second gas pipe (5); a sealing ring (14) is fixedly connected inside the annular groove (13); the first sealing ring (11) is in resistance to the sealing ring (14); and a limiting ring (19) is fixedly connected to the inner wall of the connecting pipe (9).

2. A self-sealing connection structure for gas pipe fittings according to claim 1, Features: A spring (20) is fixedly connected to one side of the limiting ring (19), the spring (20) is spiral-shaped, and a sleeve (18) is fixedly connected to one side of the limiting ring (19).

3. A self-sealing connection structure for gas pipe fittings according to claim 2, Features: The outer wall of the sleeve (18) is fixedly connected to the inner wall of the connecting pipe (9), a groove (23) is provided inside the sleeve (18), an annular magnetic block (22) is fixedly connected inside the groove (23), and a through hole (24) is provided inside the sleeve (18).

4. A self-sealing connection structure for gas pipe fittings according to claim 2, Features: The spring (20) is located in the through hole (24), the through hole (24) is in the shape of a flat-top cone, a steel ball (21) is arranged inside the through hole (24), and the diameter of the end of the through hole (24) away from the limiting ring (19) is 5 mm-10 mm smaller than that of the steel ball (21).

5. A self-sealing connection structure for gas pipe fittings according to claim 1, Features: The thread direction of the bidirectional external thread (17) matches the first internal thread (15) and the second internal thread (16).

6. A self-sealing connection structure for gas pipe fittings according to claim 3, Features: The inner wall of the annular magnetic block (22) matches the through hole (24), and the steel ball (21) is located on a side of the spring (20) close to the annular magnetic block (22).

7. A self-sealing connection structure for gas pipe fittings according to claim 1, Features: The inner wall of the sealing ring (14) is in the shape of a flat-top cone, and the diameter of the inner wall on the opposite side of the sealing ring (14) is larger than the diameter on the side facing away from it.

8. A self-sealing connection structure for gas pipe fittings according to claim 1, Features: The connecting member comprises a plurality of bolts (3), the outer walls of the second flange (7) and the first flange (2) are evenly provided with threaded holes, and the bolts (3) penetrate through the threaded holes of the second flange (7) and the first flange (2) and are threadedly connected with first anti-slip nuts (6).

9. A self-sealing connection structure for gas pipe fittings according to claim 8, Features: A magnetic block (4) is threadedly connected to the middle portion of the bolt (3), and the magnetic block (4) matches the steel ball (21).

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