A rubber seal assembly for high pressure pipe connections

Abstract

The utility model discloses a rubber sealing assembly for high pressure pipeline connection relates to pipeline sealing connection field, including sealed pipe and two high pressure pipes, the end face of sealed pipe both ends is all set up with thread groove, and the both ends of two high pressure pipes are all integrative and are provided with the plug -in board matched with thread groove, and the first rubber ring is all bonded in two thread grooves, and the both end walls of sealed pipe are all bonded with second rubber ring and third rubber ring, and the outer wall of sealed pipe evenly installs four sets of sealing assembly, and each set of sealing assembly is used for assisting fastening to two high pressure pipes, and the first rubber ring, second rubber ring and third rubber ring all are composed of external rubber layer, middle part reinforcing support layer and internal medium -resistant rubber layer, and the utility model discloses through multilayer rubber ring structure, has strengthened overall sealing performance, can effectively respond to high pressure and complex medium environment, and the leakage risk is reduced greatly, and it is guaranteed that the stable sealing in the high requirement field such as petroleum chemical industry, natural gas transmission.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of pipeline sealing connection, specifically a rubber sealing component for high-pressure pipeline connection. Background Technology

[0002] In many critical industrial sectors, such as the petrochemical industry, hydraulic system applications, and natural gas pipelines, the sealing performance of high-pressure connection components is of paramount importance. These sectors have extremely high requirements for sealing performance because once the seal fails, it may lead to serious leakage accidents, which in turn affect production safety and the environment.

[0003] A pipe rubber seal described in the prior art includes a sealing assembly, a locking element mounted on the surface of the sealing assembly, a locking bolt mounted on the surface of the locking element, and pipes provided at both ends of the sealing assembly. The pipes and the sealing assembly are connected by threaded connection with a connecting ring through a threaded groove on the surface of a connecting block, and the sealing rubber is used to seal the connection between the pipes and the sealing assembly.

[0004] While the above technologies can increase the sealing area, making it less likely for water flow to erode the sealing rubber and improve the sealing effect, and the locking mechanism ensures the fixation between the sealing component and the pipeline, preventing the sealing component from loosening, the structure of the sealing rubber is simple and it is difficult to maintain good sealing performance for a long time under complex and harsh working conditions. When faced with high pressure and corrosion from various chemical media, ordinary rubber is prone to aging and deformation, leading to seal failure. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a rubber sealing assembly for high-pressure pipeline connections to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A rubber sealing assembly for high-pressure pipeline connection includes a sealing tube and two high-pressure tubes. Threaded grooves are formed on the end faces of both ends of the sealing tube. Insert plates that match the threaded grooves are integrally formed on both ends of the two high-pressure tubes. A first rubber ring is bonded to each of the two threaded grooves. A second rubber ring and a third rubber ring are bonded to the end walls of both ends of the sealing tube. Four sets of sealing assemblies are evenly installed on the outer wall of the sealing tube. Each set of sealing assemblies is used to assist in fastening the two high-pressure tubes. The first rubber ring, the second rubber ring, and the third rubber ring are all composed of an outer rubber layer, a middle reinforcing support layer, and an inner media-resistant rubber layer.

[0007] Specifically, in this technical solution, the second rubber ring is located at the outer edge of the end face of the sealing tube, the third rubber ring is located at the inner edge of the end face of the sealing tube, the outer rubber layer is made of high elasticity and high strength rubber material, the middle reinforcing support layer is made of metal mesh, and the inner media-resistant rubber layer is made of oil-resistant and corrosion-resistant rubber material. The central reinforcing support layer is evenly distributed within the outer rubber layer, and the inner media-resistant rubber layer is bonded to the outer rubber layer.

[0008] Specifically, in this technical solution, each sealing assembly is provided with two opposing movable plates. The opposite ends of the two movable plates extend out of the wall of the sealing tube. A square through groove is opened at the opposite ends of the two movable plates. A rotating shaft is fixed on both sides of the other end of the two movable plates. An installation block is provided on the outer wall of each rotating shaft. The bottom end of each installation block is fixedly connected to the outer wall of the sealing tube.

[0009] Specifically, in this technical solution, each of the rotating shafts is rotatably connected to the mounting block, and each of the movable plates is equipped with bolts at the square through slot.

[0010] Specifically, in this technical solution, four fixing blocks are evenly fixed on the outer wall of one end of the two high-pressure pipes near the plug plate. Each fixing block matches a square through slot, and two through holes are opened on the side wall of each fixing block. The rod of each bolt passes through the through holes.

[0011] Specifically, in this technical solution, annular baffles are fixed to the outer walls of both ends of the sealing tube, and the outer ring walls of the two baffles are in contact with the lower surface of the movable plate.

[0012] In summary, the present invention has the following advantages: by adopting a multi-layer rubber ring structure consisting of an outer rubber layer, a middle reinforcing support layer, and an inner media-resistant rubber layer, the overall sealing performance is enhanced. The outer rubber layer provides high elasticity and strength, the middle metal mesh support layer prevents deformation, and the inner media-resistant rubber layer resists oil and chemical corrosion. It can effectively cope with high pressure and complex media environments, significantly reduce the risk of leakage, and ensure stable sealing in high-requirement fields such as petrochemicals and natural gas transportation. By using a plug-in plate and threaded groove, and supplemented by multiple sets of sealing components for fastening, it is more stable than the traditional method of relying solely on threaded connections and simple locking parts. It can prevent the connection from loosening due to pipeline displacement or vibration caused by pressure changes, ensuring the reliability and stability of high-pressure pipeline connections, and reducing maintenance costs and safety hazards. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the pipe fitting connection of this utility model; Figure 2 This is a schematic diagram showing the disassembled pipe fittings of this utility model; Figure 3 For the present utility model Figure 1 Front view sectional structural schematic diagram; Figure 4 This is a schematic diagram of the cross-section of the rubber ring of this utility model.

[0014] Figure Descriptions: 1. Sealing tube; 101. Threaded groove; 1011. First rubber ring; 102. Second rubber ring; 103. Third rubber ring; 104. Baffle; 2. Sealing assembly; 201. Mounting block; 202. Movable plate; 2021. Square through groove; 203. Rotating shaft; 204. Bolt; 3. High-pressure pipe; 301. Insert plate; 302. Fixing block; 3021. Perforation; 4. Outer rubber layer; 5. Middle reinforcing support layer; 6. Inner media-resistant rubber layer. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0016] The embodiments of this utility model will be described below based on its overall structure.

[0017] In this embodiment, please refer to Figures 1-4 As shown, a rubber sealing assembly for high-pressure pipeline connection includes a sealing tube 1 and two high-pressure tubes 3. Threaded grooves 101 are provided on the end faces of both ends of the sealing tube 1. Insertion plates 301 that match the threaded grooves 101 are integrally provided on both ends of the two high-pressure tubes 3. The inner wall of the insertion plate 301 is provided with threads that mesh with the threaded grooves 101. A first rubber ring 1011 is bonded to each of the two threaded grooves 101. A second rubber ring 102 and a third rubber ring 103 are bonded to the end walls of both ends of the sealing tube 1. The second rubber ring 102 is located at the outer edge of the end face of the sealing tube 1, and the third rubber ring 103 is located at the inner edge of the end face of the sealing tube 1. Four sets of sealing components 2 are evenly installed on the outer wall of the sealing tube 1. Each set of sealing components 2 is used to assist in fastening the two high-pressure tubes 3. The first rubber ring 1011, the second rubber ring 102, and the third rubber ring 103 are all composed of an outer rubber layer 4, a middle reinforcing support layer 5, and an inner media-resistant rubber layer 6. The outer rubber layer 4 is made of a high-elasticity and high-strength rubber material, such as ethylene propylene rubber. The rubber raw material is fully mixed with additives such as vulcanizing agents and accelerators through a mixer, and then vulcanized in a mold to provide basic sealing function and mechanical strength, effectively resisting deformation and extrusion under high pressure. The middle reinforcing support layer 5 is made of metal mesh, which is cut to an appropriate size according to the size of the sealing component. The metal mesh is placed in the mold and integrated with the outer rubber layer during the vulcanization process. The metal mesh is evenly distributed inside the rubber layer to enhance its overall rigidity. If fiber fabrics, such as aramid fiber fabrics, are used, they are also cut and vulcanized with the rubber layer. The strength of the reinforcing support layer is controlled by adjusting the number of fiber fabric layers and the weaving method. The inner media-resistant rubber layer 6 uses oil-resistant and corrosion-resistant rubber materials. Appropriate rubber materials are selected according to different media. For example, fluororubber is selected for acidic media. The middle reinforcing support layer 5 is evenly distributed in the outer rubber layer 4. The inner media-resistant rubber layer 6 and the outer rubber layer 4 are tightly connected by special adhesives or co-vulcanization processes to ensure that they do not delaminate during use.

[0018] When connecting the two high-pressure pipes 3, align the end of the high-pressure pipe 3 with the plug plate 301 with the threaded groove 101 of the sealing pipe 1, insert the plug plate 301 into the threaded groove 101, and screw it in through the thread until the end of the plug plate 301 presses against the first rubber ring 1011. At this time, the end face of the high-pressure pipe 3 will be in close contact with the end face of the sealing pipe 1, pressing against the second rubber ring 102 and the third rubber ring 103, initially fixing the position of the high-pressure pipe 3 and the sealing pipe 1. Then, the operator will fit the sealing component 2 onto the fixing block 302 on the outer wall of the high-pressure pipe 3 and fix it with bolts 204 to further tighten the connection between the high-pressure pipe 3 and the sealing pipe 1. Finally, after the connection is completed, a comprehensive inspection is carried out to check whether the installation position of each rubber ring is accurate, whether there is any displacement or damage, whether the connection between the sealing component 2 and the high-pressure pipe 3 and the sealing pipe 1 is firm, and whether the bolts 204 are tightened. This multi-layered rubber ring structure enhances the overall sealing performance, effectively copes with high pressure and complex media environments, significantly reduces the risk of leakage, and ensures stable sealing in demanding fields such as petrochemicals and natural gas transportation. Furthermore, the combination of the plug plate 301 and the threaded groove 101, along with multiple sets of sealing components 2 for fastening, provides greater stability compared to traditional methods that rely solely on threaded connections and simple locking devices. This prevents pipeline displacement or vibration due to pressure changes from causing loosening of the connection, ensuring the reliability and stability of the connection, and reducing maintenance costs and safety hazards.

[0019] Please see Figures 1-3As shown, each sealing assembly 2 is provided with two opposing movable plates 202. The opposite ends of the two movable plates 202 extend out of the wall of the sealing tube 1. A square through groove 2021 is provided at the opposite ends of each movable plate 202. Rotating shafts 203 are fixed to both sides of the other ends of the two movable plates 202. Each rotating shaft 203 has a mounting block 201 on its outer wall. The bottom end of each mounting block 201 is fixedly connected to the outer wall of the sealing tube 1. Each rotating shaft 203 is rotatably connected to the mounting block 201. Each movable plate... Bolts 204 are installed at the square through slot 2021. Four fixing blocks 302 are evenly fixed on the outer wall of the two high-pressure pipes 3 near the plug plate 301. Each fixing block 302 matches the square through slot 2021, and two through holes 3021 are opened on the side wall of each fixing block 302. The rod of each bolt 204 passes through the through hole 3021. Annular baffles 104 are fixed on the outer walls of both ends of the sealing pipe 1. The outer ring walls of the two baffles 104 are in contact with the lower surface of the movable plate 202.

[0020] After the high-pressure pipe 3 and the sealing pipe 1 are initially connected through the plug plate 301 and the threaded groove 101, the operator flips the movable plate 202 so that the movable plate 202 rotates around the mounting block 201 through the rotating shaft 203 until the square through groove 2021 of the movable plate 202 fits onto the fixed block 302. The baffle 104 can limit the excessive rotation of the movable plate 202. Then, the bolts 204 are tightened with tools to make the movable plate 202 and the fixed block 302 firmly connected, further tightening the connection between the high-pressure pipe 3 and the sealing pipe 1. During the tightening of the bolts 204, it is necessary to ensure that the tightening force of each bolt 204 is uniform so as to ensure that the auxiliary tightening effect of the sealing component 2 on the two high-pressure pipes 3 is consistent.

[0021] The working principle of this utility model is as follows: When connecting the two high-pressure pipes 3, align the end of the high-pressure pipe 3 with the insertion plate 301 with the threaded groove 101 of the sealing pipe 1, insert the insertion plate 301 into the threaded groove 101, and screw it in through the thread until the end of the insertion plate 301 presses against the first rubber ring 1011. At this time, the end face of the high-pressure pipe 3 will be in close contact with the end face of the sealing pipe 1, pressing against the second rubber ring 102 and the third rubber ring 103, initially fixing the position of the high-pressure pipe 3 and the sealing pipe 1. Then, the operator flips the movable plate 202, so that the movable plate 202 passes through the rotating shaft 2. 03. Rotate around the mounting block 201 until the square through groove 2021 of the movable plate 202 fits onto the fixed block 302. The baffle 104 can limit the excessive rotation of the movable plate 202. Then, use a tool to tighten the bolt 204 to make the movable plate 202 and the fixed block 302 firmly connected. Further tighten the connection between the high pressure pipe 3 and the sealing pipe 1. Finally, after the connection is completed, conduct a comprehensive inspection to check whether the installation position of each rubber ring is accurate, whether there is any displacement or damage, and whether the connection between the sealing component 2 and the high pressure pipe 3 and the sealing pipe 1 is firm and whether the bolt 204 is tightened.

[0022] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A rubber sealing assembly for high-pressure pipeline connection, comprising a sealing pipe (1) and two high-pressure pipes (3), characterized in that, The end faces of both ends of the sealing tube (1) are provided with threaded grooves (101). Both ends of the two high-pressure tubes (3) are provided with plug plates (301) that match the threaded grooves (101). A first rubber ring (1011) is bonded to both threaded grooves (101). A second rubber ring (102) and a third rubber ring (103) are bonded to both ends of the sealing tube (1). Four sets of sealing components (2) are evenly installed on the outer wall of the sealing tube (1). Each set of sealing components (2) is used to assist in fastening the two high-pressure tubes (3). The first rubber ring (1011), the second rubber ring (102) and the third rubber ring (103) are all composed of an outer rubber layer (4), a middle reinforcing support layer (5) and an inner media-resistant rubber layer (6).

2. The rubber sealing assembly for high-pressure pipeline connection according to claim 1, characterized in that, The second rubber ring (102) is located at the outer edge of the end face of the sealing tube (1), the third rubber ring (103) is located at the inner edge of the end face of the sealing tube (1), the outer rubber layer (4) is made of ethylene propylene rubber, the middle reinforcing support layer (5) is made of metal mesh, and the inner media resistant rubber layer (6) is made of oil-resistant and corrosion-resistant rubber material. The central reinforcing support layer (5) is evenly distributed within the outer rubber layer (4), and the inner medium-resistant rubber layer (6) is bonded to the outer rubber layer (4).

3. A rubber sealing assembly for high-pressure pipeline connection according to claim 1, characterized in that, Each sealing assembly (2) is provided with two opposing movable plates (202). The opposite ends of the two movable plates (202) extend out of the wall of the sealing tube (1). The opposite ends of the two movable plates (202) are provided with square through grooves (2021). The other ends of the two movable plates (202) are fixed with rotating shafts (203). Each rotating shaft (203) has an mounting block (201) on its outer wall. The bottom end of each mounting block (201) is fixedly connected to the outer wall of the sealing tube (1).

4. A rubber sealing assembly for high-pressure pipeline connection according to claim 3, characterized in that, Each of the said rotating shafts (203) is rotatably connected to the mounting block (201), and each of the said movable plates (202) is fitted with bolts (204) at the square through slot (2021).

5. A rubber sealing assembly for high-pressure pipeline connection according to claim 4, characterized in that, Four fixing blocks (302) are evenly fixed on the outer wall of one end of the two high-pressure pipes (3) near the plug plate (301). Each fixing block (302) matches the square through groove (2021), and two through holes (3021) are opened on the side wall of each fixing block (302). The rod of each bolt (204) passes through the through hole (3021).

6. A rubber sealing assembly for high-pressure pipeline connection according to claim 3, characterized in that, Both ends of the sealing tube (1) are fixed with annular baffles (104), and the outer ring walls of the two baffles (104) are in contact with the lower surface of the movable plate (202).

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