Fluid pipeline connecting device

Abstract

The utility model relates to the technical field of pressure containers, in particular to a fluid pipeline connecting device which comprises a central pipe, two symmetrically-distributed connecting sleeves are arranged on the surface of the central pipe, first external threads are arranged on the surface of the central pipe, first internal threads are arranged on the inner wall faces of the connecting sleeves, and the first internal threads are in threaded butt joint with the first external threads. A transition pipe is arranged in the connecting sleeve, the end face of the transition pipe is tightly attached to the end face of the center pipe, a second external thread is arranged on the outer wall face of one end of the transition pipe, and the second external thread is in threaded butt joint with the first internal thread of the connecting sleeve. By adopting the sealing ring made of a high-performance material and combining with the unique groove design, the sealing ring can keep an excellent sealing effect in a wider temperature and pressure range, the leakage risk is remarkably reduced or even eliminated, the sealing ring is particularly suitable for transmission of high-pressure, high-temperature and corrosive media, and the safety and reliability of a system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessels, in particular to a fluid pipeline connection device. Background Art

[0002] A fluid pipeline refers to a pipeline system for transporting liquids or gases, and fluid pipelines are widely used in various industries, including water supply, drainage, heating, air conditioning, petroleum, chemical industry, food processing, etc.

[0003] Some main characteristics and applications of fluid pipelines:

[0004] Wide size range: The diameter of fluid pipelines can range from a few millimeters to several meters to meet different flow rate and pressure requirements;

[0005] Diverse connection methods: Fluid pipelines can be connected by various methods such as welding, threaded connection, flange connection, bonding, hot melting, etc. to ensure the sealing and firmness of the pipeline system;

[0006] Pressure resistance: Fluid pipelines need to have a certain pressure resistance to withstand the pressure of the internal fluid, and the pressure resistance of different pipeline systems varies according to different designs and materials.

[0007] Existing fluid pipeline connection devices often have poor sealing performance under high pressure, high temperature or corrosive environments, are prone to leakage, and are inconvenient for installation and disassembly, resulting in high maintenance costs.

[0008] For rapidly changing fluid pressure and temperature conditions, sealing reliability becomes a major challenge.

[0009] The fluid pipeline connection device of the utility model patent is a connecting component widely used in other fluid transmission systems such as water, gas, glue, etc., for quick, simple and reliable sealed connection. Summary of the Utility Model

[0010] The purpose of the utility model is to solve the above-mentioned drawbacks in the prior art, and to propose a clamp-type fluid sealing joint for achieving efficient and reliable sealing.

[0011] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0012] Design a fluid pipeline connection device, including a central pipe. Two symmetrically distributed connecting sleeves are arranged on the surface of the central pipe. The surface of the central pipe is provided with a first external thread, and the inner wall surface of the connecting sleeve is provided with a first internal thread, and the first internal thread is threadedly docked with the first external thread. A transition pipe is arranged inside the connecting sleeve, and the end face of the transition pipe is tightly attached to the end face of the central pipe. A second external thread is arranged on the outer wall surface of one end of the transition pipe, and the second external thread is threadedly docked with the first internal thread of the connecting sleeve. The other end face of the transition pipe is tightly attached to an external connection pipe. A positioning groove is opened on one end face of the external connection pipe. A positioning block is arranged on the end face of the transition pipe, and one end of the positioning block is welded to the surface of the transition pipe, and the surface of the positioning block is slidably sleeved with the inner wall surface of the positioning groove. Exhaust interfaces are arranged through the surfaces of the transition pipe and the external connection pipe, and the transition pipe and the external connection pipe are welded and fixed to the corresponding exhaust interfaces. A sealing bolt covers the exhaust interface, and a second internal thread is opened on the inner wall surface of the exhaust interface. A third external thread is arranged on the outer circumferential wall of the sealing bolt, and the third external thread is threadedly docked with the second internal thread.

[0013] Specifically, the number of the positioning grooves is at least two, and the positioning grooves are evenly distributed along one end face of the external connection pipe.

[0014] Specifically, a clamping mechanism is arranged at the connection position of the transition pipe and the external connection pipe. The clamping mechanism is divided into an upper clamp and a lower clamp. Semi-circular sealing areas are arranged on both the upper clamp and the lower clamp. The two sealing areas form a complete circular sealing surface, and the circular sealing surface covers the connection of the transition pipe and the external connection pipe.

[0015] Specifically, one end of the upper clamp is hinged to the corresponding end of the lower clamp through a hinge.

[0016] Specifically, a notch is arranged at the other end of the upper clamp, and a threaded post is arranged at the other end of the lower clamp. One end of the threaded post is welded to the end face of the lower clamp, and the threaded post is arranged in the notch.

[0017] Specifically, a threaded sleeve is threadedly docked at the upper end of the threaded post, and the lower end face of the threaded sleeve covers the surface of the upper clamp.

[0018] Specifically, a knob is arranged on the outer circumferential wall of the threaded sleeve. One end of the knob is welded to the surface of the threaded sleeve. The number of the knobs is at least two and they are evenly distributed.

[0019] The beneficial effects of the design scheme proposed by the present utility model in the application process are as follows:

[0020] 1. Enhanced sealing performance: By using a sealing ring made of high-performance materials and combining it with a unique groove design, this patent can maintain excellent sealing effects within a wider range of temperatures and pressures, significantly reducing or even eliminating the risk of leakage. It is particularly suitable for the transmission of high-pressure, high-temperature, and corrosive media, improving the safety and reliability of the system.

[0021] 2. Improved durability and lifespan: Selecting wear-resistant and corrosion-resistant materials and combining them with a carefully designed stress distribution mechanism reduces the wear of the sealing surface and stress concentration, extends the service life of the joint, and reduces the costs and downtime caused by frequent replacements.

[0022] 3. Economical and efficient: Although high-performance materials and innovative designs are adopted, the optimization and simplification of the overall structure effectively control the production cost. In the long run, due to its characteristics of reducing leakage and lowering maintenance frequency, it brings significant economic benefits to users. Brief Description of the Drawings

[0023] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0024] Figure 2 is a schematic diagram of the front structure of the present utility model;

[0025] Figure 3 is a front schematic diagram of the clamp of the present utility model;

[0026] Figure 4 is a schematic diagram of the overall internal structure of the present utility model.

[0027] In the figure: 10, central pipe; 11, connecting sleeve; 12, transition pipe; 13, first external thread; 14, external connecting pipe; 15, positioning groove; 16, positioning block; 17, exhaust interface; 18, sealing bolt; 19, second external thread; 20, upper clamp; 21, lower clamp; 22, notch; 23, threaded post; 24, threaded sleeve. Detailed Description of the Preferred Embodiment

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] Refer to Figures 1 - 4, A fluid pipeline connection device, including a central pipe 10. There are two symmetrically distributed connection sleeves 11 arranged on the surface of the central pipe 10. A first external thread 13 is arranged on the surface of the central pipe 10. A first internal thread is arranged on the inner wall surface of the connection sleeve 11, and the first internal thread is threadedly docked with the first external thread 13. A transition pipe 12 is arranged inside the connection sleeve 11, and the end face of the transition pipe 12 is closely attached to the end face of the central pipe 10. A second external thread 19 is arranged on the outer wall surface of one end of the transition pipe 12, and the second external thread 19 is threadedly docked with the first internal thread of the connection sleeve 11. An external connection pipe 14 is closely attached to the end face of the other end of the transition pipe 12. A positioning groove 15 is opened on one end face of the external connection pipe 14. A positioning block 16 is arranged on the end face of the transition pipe 12, and one end of the positioning block 16 is welded to the surface of the transition pipe 12, and the surface of the positioning block 16 is slidably sleeved with the inner wall surface of the positioning groove 15. Exhaust interfaces 17 are penetrated through the surfaces of the transition pipe 12 and the external connection pipe 14, and the transition pipe 12 and the external connection pipe 14 are fixedly welded to the corresponding exhaust interfaces 17. A sealing bolt 18 is covered on the exhaust interface 17, and a second internal thread is opened on the inner wall surface of the exhaust interface 17. A third external thread is arranged on the outer circumferential wall of the sealing bolt 18, and the third external thread is threadedly docked with the second internal thread.

[0030] It should be further noted that the number of the positioning grooves 15 is at least two, and the positioning grooves 15 are evenly distributed along one end face of the external connection pipe 14, so that the position can be pre-positioned when the external connection pipe 14 is docked with the transition pipe 12.

[0031] It should be further noted that a clamp mechanism is arranged at the connection position between the transition pipe 12 and the external connection pipe 14. The clamp mechanism is divided into an upper clamp 20 and a lower clamp 21. Semi-circular sealing areas are arranged on both the upper clamp 20 and the lower clamp 21. The two sealing areas form a complete circular sealing surface, and the circular sealing surface covers the connection part between the transition pipe 12 and the external connection pipe 14. The upper clamp 20 and the lower clamp 21 can completely wrap the connection gap position between the transition pipe 12 and the external connection pipe 14.

[0032] It should be further noted that one end of the upper clamp 20 is hinged to the corresponding end of the lower clamp 21 through a hinge, so that the upper clamp 20 and the lower clamp 21 can be rotated to open or close each other.

[0033] It should be further noted that a notch 22 is arranged at the other end of the upper clamp 20, and a threaded post 23 is arranged at the other end of the lower clamp 21. One end of the threaded post 23 is welded to the end face of the lower clamp 21, and the threaded post 23 is arranged in the notch 22, which can ensure that the threaded post 23 can move to the pre-installed position when the upper clamp 20 and the lower clamp 21 are closed.

[0034] Further, it should be noted that the upper end of the threaded post 23 is threadedly docked with a threaded sleeve 24. The lower end surface of the threaded sleeve 24 covers the surface of the upper clamp 20. The threaded sleeve 24 and the threaded post 23 are in threaded cooperation with each other, which can realize the mutual locking of the upper clamp 20 and the lower clamp 21.

[0035] Further, it should be noted that a knob is provided on the outer wall of the threaded sleeve 24. One end of the knob is welded to the surface of the threaded sleeve 24. The number of knobs is at least two and they are evenly distributed, so that the threaded sleeve 24 can be manually rotated to improve the convenience of operation.

[0036] The above-mentioned components are all made of 304 or 306L stainless steel materials, which have good wear resistance and corrosion resistance, and improve the service life of each structure.

[0037] Working method: The installation of traditional connection devices is complex, time-consuming or requires professional tools. The fluid pipeline connection device of this patent does not need to be welded additionally, and the installation speed is relatively fast, making on-site installation and maintenance more convenient and fast.

[0038] Through the full-circumference pressing method of the guiding interface, the clamp and the sealing ring can be closely attached to the groove at the pipe end, ensuring excellent sealing performance and preventing leakage.

[0039] When air is mixed into the solvent, it can be discharged through the air vent, thus avoiding air resistance or cavitation phenomena, and improving the fluid transmission efficiency and the safety of equipment operation.

[0040] The material of the sealing ring can be selected according to the fluid medium, pipe material type and working temperature to meet the sealing requirements under different working conditions, and ensure that there is no leakage of fluid under high pressure, high temperature or corrosive environment.

[0041] Due to the existence of a small gap in the joint design, it can effectively absorb and damp the energy transfer caused by fluid pulsation or external vibration, achieve the vibration isolation effect, and at the same time, the pipeline will not be affected during thermal expansion and contraction.

[0042] Considering that the solvent may be corrosive, the material selection of the connection device of this patent ensures that the material in contact with the solvent has good chemical stability and corrosion resistance, and at the same time, the sealing material is also compatible with the chemical properties of the solvent to maintain a long-term effective sealing effect.

[0043] At present, fluid sealing joints on the market are often designed for specific pipe diameters and lack universality. In actual applications, due to the differences in pipe specifications, it is often necessary to prepare a variety of different specifications of joints, which increases the complexity of inventory and management. The patent can realize a clamp-type fluid sealing joint with self-adaptive ability, which can be applied to pipes with different diameters, and improve the universality and flexibility of the joint.

[0044] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A fluid pipeline connection device, comprising a central tube (10), characterized in that: The surface of the central tube (10) is provided with two symmetrically distributed adapter sleeves (11); the surface of the central tube (10) is provided with a first external thread (13); the inner wall surface of the adapter sleeve (11) is provided with a first internal thread, and the first internal thread and the first external thread (13) are threadedly connected to each other; a transition tube (12) is provided inside the adapter sleeve (11), and the end surface of the transition tube (12) is tightly arranged with the end surface of the central tube (10); a second external thread (19) is provided on the outer wall surface of one end of the transition tube (12), and the second external thread (19) is threadedly connected with the first internal thread of the adapter sleeve (11); the other end surface of the transition tube (12) is tightly arranged with an external tube (14), and the end surface of one end of the external tube (14) is tightly connected with the outer wall surface of the central tube (10); A positioning groove (15) is provided, a positioning block (16) is provided on the end face of the transition pipe (12), and one end of the positioning block (16) is welded to the surface of the transition pipe (12), and the surface of the positioning block (16) is slidably sleeved with the inner wall surface of the positioning groove (15), the surface of the transition pipe (12) and the surface of the external pipe (14) are both penetrated by exhaust interfaces (17), and the transition pipe (12) and the external pipe (14) are welded and fixed to the corresponding exhaust interfaces (17), the exhaust interfaces (17) are covered with sealing bolts (18), and the inner wall surface of the exhaust interface (17) is provided with a second internal thread, the outer ring wall of the sealing bolt (18) is provided with a third external thread, and the third external thread and the second internal thread are threadedly butted with each other.

2. The fluid pipeline connecting device according to claim 1, characterized in that: The number of the positioning grooves (15) is at least two sides, and the positioning grooves (15) are evenly distributed along one end surface of the external tube (14).

3. The fluid pipeline connecting device according to claim 1, characterized in that: A clamp mechanism is provided at the connection position between the transition pipe (12) and the external pipe (14), and the clamp mechanism is divided into an upper clamp (20) and a lower clamp (21). Both the upper clamp (20) and the lower clamp (21) are provided with a semicircular sealing area, and the two sealing areas form a complete circular sealing surface, and the circular sealing surface covers the connection between the transition pipe (12) and the external pipe (14).

4. The fluid pipeline connecting device according to claim 3, characterized in that: One end of the upper clamp (20) and a corresponding end of the lower clamp (21) are hingedly connected to each other via a hinge.

5. The fluid pipeline connecting device according to claim 4, characterized in that: The other end of the upper clamp (20) is provided with a notch (22), and the other end of the lower clamp (21) is provided with a threaded column (23), one end of the threaded column (23) is welded and fixed to the end surface of the lower clamp (21), and the threaded column (23) is arranged in the notch (22).

6. The fluid pipeline connecting device according to claim 5, characterized in that: The upper end of the threaded column (23) is threadedly connected to a threaded sleeve (24), and the lower end surface of the threaded sleeve (24) covers the surface of the upper clamp (20).

7. The fluid pipeline connecting device according to claim 6, characterized in that: A knob is arranged on the outer wall of the threaded sleeve (24), one end of the knob is welded to the surface of the threaded sleeve (24), and the number of the knobs is at least two and they are evenly distributed.

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