High sealing liner stainless steel tee

Abstract

The utility model discloses a kind of high sealing property inner lining stainless steel tee pipe fittings, belong to pipeline connecting piece technical field.The pipe fitting includes tee sealing pipe assembly, pipeline fastening assembly and inner lining sealing connection assembly;The tee sealing pipe assembly is internally provided with pipeline internal sealing ring, the pipeline fastening assembly is connected with tee sealing pipe assembly by the thread connection of connecting end locking nut;The inner lining sealing connection assembly is housed in connecting end locking nut, and it includes inner lining sealing port, the outer periphery of the inner lining sealing port is equipped with elastic sealing rubber ring, and connector positioning slot is opened in outer periphery, and the end portion integrally formed has connector anti-skid tooth.The utility model is sealed by inside and outside double, and is combined with positioning and anti-skid structure, solve the problem that single sealing structure in prior art is easily leaked under vibration condition, and connection reliability is low, with the advantages of excellent sealing performance, connection stable and reliable, easy to install.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a high-sealing stainless steel lined tee fitting. Background Technology

[0002] Tee fittings, as fundamental components of fluid piping systems, are widely used in numerous fields such as construction, chemical engineering, and water supply and drainage. Their main function is to change the direction of fluid flow or to achieve flow branching and merging in pipelines. In piping systems, the sealing performance of tee fitting connections is crucial to ensuring the safe and stable operation of the entire system.

[0003] Currently, common tee fittings typically use a threaded connection for locking, and achieve a seal by placing a single sealing ring or gasket at the connection interface, relying on compression deformation to fill the gap. This structure can provide a basic sealing effect under static, stable operating conditions.

[0004] However, in real-world applications, piping systems are often subjected to mechanical vibrations from pumps, valves, or other equipment, as well as fluctuations in fluid pressure within the pipes. Under the continuous action of these dynamic loads, the inherent limitations of traditional single-seal structures become apparent. Vibration and impact cause slight displacement or loosening of the locking components, resulting in a decrease in the preload applied to individual sealing rings. Consequently, sealing performance deteriorates, and over time, this can easily lead to leakage or seepage at the joints, affecting the long-term operational reliability of the system.

[0005] Therefore, this utility model proposes a high-sealing stainless steel-lined tee fitting to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a high-sealing stainless steel-lined tee fitting, which aims to improve the problem that the single sealing structure of the existing tee fittings leads to insufficient connection reliability and easy leakage under vibration conditions.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a high-sealing stainless steel lined tee fitting, comprising: a tee sealing pipe assembly, a pipe fastening assembly, and an inner lining sealing connection assembly.

[0008] The three-way sealing pipe assembly has a threaded connector fixedly connected to its external port, and an internal sealing ring is provided inside the three-way sealing pipe assembly. The pipe fastening assembly includes a connecting end lock nut, and the internal thread of the connecting end lock nut engages with the external thread of the threaded connector.

[0009] Furthermore, the inner lining sealing connection assembly is housed inside the locking nut of the connecting end and abuts against the port of the three-way sealing tube assembly; the inner lining sealing connection assembly includes an inner lining sealing port, and an elastic sealing ring is sleeved on the outer periphery of the inner lining sealing port. When the locking nut of the connecting end is tightened, the elastic sealing ring is compressed and sealed between the outer wall of the inner lining sealing port and the inner wall of the port of the three-way sealing tube assembly; a connector positioning groove is also provided on the outer periphery of the inner lining sealing port, and an anti-slip tooth for the connector is integrally formed on the end of the inner lining sealing port away from the three-way sealing tube assembly.

[0010] Preferably, the outer wall of the locking nut at the connecting end is fixedly connected with a nut anti-slip ridge.

[0011] Preferably, the interior of the tee sealing pipe assembly has a tee sealing groove for installing the internal sealing ring of the pipe.

[0012] Preferably, the material of the inner lining sealing port is stainless steel.

[0013] Preferably, the connector positioning slots are evenly distributed around the outer periphery of the inner liner sealing port.

[0014] Preferably, the anti-slip teeth of the connector are serrated structures extending toward the inside of the locking nut at the connecting end.

[0015] Preferably, the internal sealing ring of the pipe and the elastic sealing rubber ring are spaced apart along the axial direction of the tee sealing pipe assembly.

[0016] Preferably, the inner lining sealing port is a hollow tubular structure.

[0017] This utility model has the following beneficial effects: 1. This utility model forms a double sealing structure by setting an elastic sealing ring on the outer periphery of the inner lining sealing port and setting an inner sealing ring inside the pipe inside the tee sealing pipe assembly. This solves the problem that the existing tee pipe fittings have a single sealing structure and are prone to leakage under vibration or pressure fluctuations, achieving the technical effect of redundant sealing structure and high safety and reliability.

[0018] 2. This utility model solves the problems of inaccurate positioning, easy axial movement and relative rotation leading to loosening of the connection after pipe connection in the prior art by integrating the connector positioning groove and connector anti-slip teeth on the inner lining sealing port. It achieves the technical effect of enhancing the mechanical stability of the connection, preventing loosening and improving the long-term connection firmness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a pipe fastening assembly for a high-sealing stainless steel-lined tee pipe fitting proposed in this utility model. Figure 2 This is a schematic diagram of an inner sealing connection assembly for a high-sealing stainless steel-lined tee pipe fitting proposed in this utility model. Figure 3 This is a schematic diagram of the anti-slip teeth of the connector of a high-sealing stainless steel lined tee pipe fitting proposed in this utility model. Figure 4 This is a schematic diagram of a tee sealing pipe assembly with a high sealing performance and stainless steel lining, as proposed in this utility model. Figure 5 This is a schematic diagram of the internal sealing ring of a stainless steel-lined tee fitting with high sealing performance proposed in this utility model.

[0020] Legend: 1. Pipe fastening assembly; 101. Connecting end lock nut; 102. Nut anti-slip ridge; 2. Inner lining sealing connection assembly; 201. Inner lining sealing port; 202. Elastic sealing ring; 203. Connector positioning groove; 204. Connector anti-slip teeth; 3. T-joint sealing pipe assembly; 301. T-joint sealing groove; 302. Threaded joint; 303. Pipe internal sealing ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-5 The present invention provides an embodiment of a high-sealing stainless steel lined tee fitting, comprising a tee sealing pipe assembly 3 and a pipe fastening assembly 1 detachably connected to the tee sealing pipe assembly 3 by means of a threaded connection. An inner lining sealing connection assembly 2 is also provided between the pipe fastening assembly 1 and the tee sealing pipe assembly 3. The tee sealing pipe assembly 3 serves as the main channel for fluid transportation, the pipe fastening assembly 1 is used to provide external axial locking force, and the inner lining sealing connection assembly 2 achieves the core sealing and positioning functions under the action of the locking force.

[0023] Specifically, a threaded connector 302 is fixedly connected to the external port of the tee sealing pipe assembly 3. The pipe fastening assembly 1 includes a connecting end locking nut 101. The internal thread of the connecting end locking nut 101 engages with the external thread of the threaded connector 302. By rotating the connecting end locking nut 101, the pipe fastening assembly 1 and the tee sealing pipe assembly 3 can be fastened or separated. The inner lining sealing connection assembly 2 is entirely housed in the internal cavity of the connecting end locking nut 101. In the assembled state, one end of the inner lining sealing connection assembly 2 abuts against the port end face of the tee sealing pipe assembly 3.

[0024] The core innovation of this solution lies in the synergistic cooperation between the internal structures of the inner lining sealing connection component 2 and the three-way sealing pipe assembly 3, which together form a stable and reliable double sealing system. The inner lining sealing connection component 2 includes an inner lining sealing port 201 as the main load-bearing component. The inner lining sealing port 201 is a hollow tubular structure made of stainless steel. An elastic sealing ring 202 is fitted around the outer periphery of the inner lining sealing port 201. When the locking nut 101 at the connection end is tightened, the inner lining sealing port 201 is axially pushed, causing the elastic sealing ring 202 to be compressed and elastically deformed, thereby tightly filling the space between the outer wall of the inner lining sealing port 201 and the inner wall of the port of the three-way sealing pipe assembly 3, forming the first layer of external sealing. At the same time, an internal pipe sealing ring 303 is independently set inside the three-way sealing pipe assembly 3, forming the second layer of internal sealing. Through this double sealing structure design, the sealing safety redundancy of the entire pipe fitting is greatly improved.

[0025] To further enhance the stability of the connection, the structure of the inner liner sealing port 201 has been optimized. On the outer periphery of the inner liner sealing port 201, specifically at the axial adjacent position of the elastic sealing ring 202, a connector positioning groove 203 is provided. The connector positioning groove 203 is used to precisely limit the position of the mating pipe and prevent axial movement after assembly. At the end of the inner liner sealing port 201 away from the tee sealing pipe assembly 3, a connector anti-slip tooth 204 is integrally formed. The connector anti-slip tooth 204 is a serrated structure extending toward the inside of the locking nut 101 at the connection end. It is used to increase the friction during connection, prevent relative rotation between components, and ensure the long-term firmness of the connection. To facilitate the application of sufficient torque during installation or disassembly and to prevent hand slippage, multiple arrayed anti-slip ribs 102 are fixedly connected to the outer wall of the locking nut 101 at the connecting end. The anti-slip ribs 102 significantly increase the contact friction during operation, making the tightening process more labor-saving and efficient.

[0026] The tee sealing pipe assembly 3 serves as the foundation for media flow and connection. Its internal structure is also precisely designed. Inside the tee sealing pipe assembly 3, specifically on the inner wall of the pipe opposite to the inner lining sealing connection assembly 2, a tee pipe sealing groove 301 is provided for installing the inner sealing ring 303. The tee pipe sealing groove 301 is an annular groove. The inner sealing ring 303 is embedded and fixed in the tee pipe sealing groove 301. This arrangement ensures the accuracy and stability of the position of the inner sealing ring 303. Thus, together with the external elastic sealing ring 202, which is spaced along the axial direction of the tee sealing pipe assembly 3, they form two independent and non-interfering sealing lines. This structure ensures a stable and reliable sealing effect even under extreme working conditions. As a preferred embodiment, in order to further improve the stability and vibration resistance of the connection, the structure of the inner lining sealing port 201 is more specifically defined. The connector positioning groove 203 is evenly distributed around the outer periphery of the inner lining sealing port 201. This evenly distributed structural design makes the positioning force more uniform when connected to the external pipe, effectively preventing the connection misalignment problem caused by uneven force at a single point.

[0027] As another preferred embodiment, in order to enhance the torsional resistance of the connection, the structure of the anti-slip teeth 204 of the connector has been optimized. Specifically, the anti-slip teeth 204 of the connector are sawtooth structures extending toward the inside of the locking nut 101 at the connection end. When the external pipe is inserted and mates with the inner lining sealing port 201, these sawtooth structures can mechanically engage with the outer wall of the pipe to form a strong static friction torque, thereby effectively resisting the relative rotation caused by pipeline vibration or torsional stress and ensuring the long-term stability of the connection.

[0028] Working principle: When installing the pipe connection, first place the inner lining sealing connection component 2 inside the connection end locking nut 101, and then pass the pipe to be connected through the connection end locking nut 101 and insert it into the hollow channel of the inner lining sealing port 201. At this time, the outer wall of the pipe will contact the connector positioning groove 203 and the connector anti-slip teeth 204 to achieve initial positioning and anti-rotation.

[0029] Subsequently, the locking nut 101 of the connecting end, which is equipped with the inner lining sealing connection assembly 2 and the pipe, is aligned with the threaded joint 302 at the port of the tee sealing pipe assembly 3 and rotated to lock. During the tightening process, the locking nut 101 of the connecting end generates a strong axial thrust through the engagement of the internal thread with the threaded joint 302. This thrust acts on the inner lining sealing port 201, causing it to move in the direction of the tee sealing pipe assembly 3.

[0030] As the inner lining sealing port 201 continues to advance, the elastic sealing ring 202 fitted around its outer periphery is axially compressed and radially expanded due to the elasticity of the material, tightly filling the gap between the outer wall of the inner lining sealing port 201 and the inner wall of the port of the tee sealing pipe assembly 3, forming the first reliable external seal. At the same time, the pipe internal sealing ring 303 fixed in the tee pipe sealing groove 301 forms a tight contact with the inner wall or end face of the inserted pipe, constituting the second independent internal seal. Through the synergistic effect of this double seal, leakage of the medium from the connection is completely eliminated.

Claims

1. A high-sealing stainless steel-lined tee fitting, comprising: The three-way sealing pipe assembly (3) has a threaded connector (302) fixedly connected to the outside of the port of the three-way sealing pipe assembly (3), and an internal pipe sealing ring (303) is provided inside the three-way sealing pipe assembly (3). Pipe fastening assembly (1), the pipe fastening assembly (1) includes a connecting end lock nut (101), the internal thread of the connecting end lock nut (101) engages with the external thread of the threaded joint (302); Its features are, The high-sealing stainless steel lined tee fitting also includes a lined sealing connection assembly (2), which is housed inside the connection end locking nut (101) and abuts against the port of the tee sealing pipe assembly (3). The inner lining sealing connection assembly (2) includes an inner lining sealing port (201), and an elastic sealing ring (202) is sleeved on the outer periphery of the inner lining sealing port (201). When the connecting end locking nut (101) is tightened, the elastic sealing ring (202) is compressed and sealed between the outer wall of the inner lining sealing port (201) and the inner wall of the port of the three-way sealing pipe assembly (3). The outer periphery of the inner lining sealing port (201) is also provided with a connector positioning groove (203), and the end of the inner lining sealing port (201) away from the three-way sealing pipe assembly (3) is integrally formed with connector anti-slip teeth (204).

2. The high-sealing stainless steel-lined tee fitting according to claim 1, characterized in that, The outer wall of the locking nut (101) at the connecting end is fixedly connected with a nut anti-slip rib (102).

3. The high-sealing stainless steel-lined tee fitting according to claim 1, characterized in that, The interior of the tee sealing pipe assembly (3) is provided with a tee sealing groove (301) for installing the internal sealing ring (303) of the pipe.

4. The high-sealing stainless steel-lined tee fitting according to claim 1, characterized in that, The inner lining sealing port (201) is made of stainless steel.

5. The high-sealing stainless steel-lined tee fitting according to claim 1, characterized in that, The connector positioning slots (203) are evenly distributed around the outer periphery of the inner liner sealing port (201).

6. The high-sealing stainless steel-lined tee fitting according to claim 1, characterized in that, The anti-slip teeth (204) of the connector are serrated structures extending toward the inside of the locking nut (101) at the connecting end.

7. The high-sealing stainless steel-lined tee fitting according to claim 1, characterized in that, The internal sealing ring (303) and the elastic sealing ring (202) are spaced apart along the axial direction of the tee sealing pipe assembly (3).

8. The high-sealing stainless steel-lined tee fitting according to claim 1, characterized in that, The inner lining sealing port (201) is a hollow tubular structure.

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