Elbow with long service life

Abstract

The utility model discloses an elbow pipe with long service life, which comprises an elbow pipe main body, connecting threaded pipes are fixedly arranged at two ends of the elbow pipe main body, and sealing components are sleeved on the surfaces of the connecting threaded pipes; an outer protection assembly is fixedly arranged on the surface of the bent pipe body. A reinforcing assembly is fixedly arranged at the bent position of the bent pipe body, the surface of the reinforcing assembly is coated with a polyurethane coating, a cavity is formed in the inner wall of the bent pipe body, a reinforcing metal wire is fixedly arranged in the cavity, the sealing assembly comprises a silica gel ring and a rubber ring, and the silica gel ring is connected to the surface of a connecting threaded pipe in a sleeving mode. According to the elbow pipe with the long service life, the outer protection assembly and the reinforcing metal wires are arranged, the reinforcing metal wires are used for improving the tensile property of the elbow pipe body, the extrusion polyethylene layer and the polyurethane layer can protect the outer layer of the elbow pipe body, deformation and fracture caused by the temperature difference between the interior and the exterior of the elbow pipe body are avoided, and the service life of the elbow pipe body is prolonged.

Description

A type of long-life bend Technical Field

[0001] This utility model relates to the field of pipe bending technology, specifically to a pipe bending method with a long service life. Background Technology

[0002] Pipe bends, as a common pipe fitting, are widely used in various fields such as petroleum, natural gas, chemical, power, shipbuilding, and construction. Their main function is to change the flow direction of fluids to adapt to complex pipeline layouts. However, traditional pipe bends often face problems such as wear, corrosion, and fatigue during use, resulting in a short service life, especially under harsh conditions such as high pressure, high temperature, and corrosive media. Flexible pipe bends, on the other hand, are highly flexible pipes that can be bent without damaging the pipe structure.

[0003] A bend in a pipe disclosed in publication number CN211040072U has the following advantages: the bend in this utility model can expel gas at the bend by means of a sealing plug, thereby reducing the gas pressure in the pipe and protecting the pipe.

[0004] However, this bend has the following disadvantages: the stress on the pipe at the bend is much greater than in other parts, especially the outer side which is subjected to tensile stress and the inner side to compressive stress, which makes the bend prone to cracking and affects its service life. In addition, the use of a sealing ring alone can easily leave gaps in the connection, causing leakage and affecting the sealing effect. Summary of the Invention

[0005] The technical problem to be solved by this utility model is as follows: At the bending part, the stress on the pipe is much greater than that in other parts, especially the outer side will bear tensile stress and the inner side will bear compressive stress, which will make the bend pipe easy to break and affect its service life. In addition, the use of sealing rings alone can easily lead to gaps in the connection, causing leakage and affecting the sealing effect.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A long-service-life bent pipe includes a bent pipe body, both ends of which are fixedly provided with connecting threaded pipes, and the surface of the connecting threaded pipes is fitted with a sealing component; an outer protective component is fixedly provided on the surface of the bent pipe body; a reinforcing component is fixedly provided at the bend of the bent pipe body, the surface of the reinforcing component is coated with a polyurethane coating, and a cavity is opened in the inner wall of the bent pipe body, and a reinforcing metal wire is fixedly provided inside the cavity.

[0008] As a further embodiment of this utility model: the sealing component includes a silicone ring and a rubber ring. The silicone ring is fitted onto the surface of the connecting threaded pipe, and the rubber ring is fitted onto the surface of the silicone ring. When the main bend 1 is connected to the external pipe, the silicone ring and the rubber ring cooperate to seal the connection of the connecting threaded pipe. When the silicone ring is under pressure, it can better fill the connection gap, resulting in a better sealing effect.

[0009] As a further embodiment of this utility model: the outer protective component includes an extruded polyethylene layer and a polyurethane layer. The extruded polyethylene layer is fixedly disposed on the surface of the bent pipe body, and the polyurethane layer is fixedly disposed on the surface of the extruded polyethylene layer. The extruded polyethylene layer and the polyurethane layer can protect the outer layer of the bent pipe body, avoid deformation and cracking caused by temperature difference between the inside and outside of the bent pipe body, and extend the service life of the bent pipe body.

[0010] As a further embodiment of this utility model: the reinforcing component includes a steel wire braided layer and high-strength rubber. The steel wire braided layer is fixedly disposed at the bending point of the pipe body, and the high-strength rubber is fixedly disposed on the surface of the steel wire braided layer. The steel wire braided layer and the high-strength rubber can improve the strength and pressure resistance of the bending point of the pipe body, while having good flexibility, reducing excessive stress and impact caused by local bending, and reducing the risk of breakage at the bend.

[0011] As a further aspect of this utility model: the number of reinforcing metal wires is four groups, and the four groups of reinforcing metal wires are distributed in a ring array. The reinforcing metal wires are used to improve the tensile strength of the bent pipe body.

[0012] As a further embodiment of this utility model: the inner wall of the bent pipe body is fixedly provided with an inner lining layer, the material of which is polytetrafluoroethylene, and the inner lining layer is used to improve corrosion resistance.

[0013] As a further embodiment of this utility model: the number of connecting threaded pipes and sealing components are both two sets, and the two sets of connecting threaded pipes and sealing components are respectively fixedly installed at both ends of the bent pipe body.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting external protective components and reinforcing metal wires, the reinforcing metal wires are used to improve the tensile strength of the bend body. The extruded polyethylene layer and polyurethane layer can protect the outer layer of the bend body, avoid deformation and cracking caused by temperature difference between the inside and outside of the bend body, and extend the service life of the bend body.

[0016] 2. By reinforcing the components, the steel wire braided layer and high-strength rubber can improve the strength and pressure resistance of the bending part of the pipe body, while also having good flexibility, reducing excessive stress and impact caused by local bending, and reducing the risk of breakage at the bend.

[0017] 3. By setting up the sealing components, when the bend body is connected to the external pipe, the silicone ring and the rubber ring work together to seal the connection of the threaded pipe. When the silicone ring is under pressure, it can better fill the connection gap, resulting in a better sealing effect. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 is a schematic diagram of the reinforced component structure of this utility model;

[0021] Figure 3 is a schematic diagram of the reinforcing metal wire and outer protective component structure of this utility model;

[0022] Figure 4 is a schematic diagram of the sealing assembly structure of this utility model;

[0023] Figure 5 is a schematic diagram of the overall cross-sectional structure of this utility model.

[0024] In the diagram: 1. Main body of the bend; 2. Connecting threaded pipe; 3. Sealing assembly; 301. Silicone ring; 302. Rubber ring; 4. Inner liner; 5. Outer protective assembly; 501. Extruded polyethylene layer; 502. Polyurethane layer; 6. Reinforcing assembly; 601. Steel wire braided layer; 602. High-strength rubber; 7. Polyurethane coating; 8. Reinforcing metal wire. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] As shown in Figures 1-4, a long-service-life elbow includes an elbow body 1, with threaded connecting pipes 2 fixedly installed at both ends of the elbow body 1. A sealing component 3 is fitted onto the surface of the threaded connecting pipes 2. Through the sealing component 3, when the elbow body 1 is connected to an external pipe, a silicone ring 301 and a rubber ring 302 work together to seal the connection point of the threaded connecting pipes 2. The silicone ring 301 can better fill the connection gap under pressure, resulting in a better sealing effect. An external protective component 5 is fixedly installed on the surface of the elbow body 1. A reinforcing component 6 is fixedly installed at the bend of the elbow body 1. Through the reinforcing component 6, the steel wire braided layer 601 and high-strength rubber 602 can improve the strength and pressure resistance of the bend of the elbow body 1, while also providing good flexibility, reducing excessive stress and impact from local bending, and reducing the risk of breakage at the bend.

[0027] The surface of the reinforcing component 6 is coated with a polyurethane coating 7. A cavity is opened in the inner wall of the bend body 1, and a reinforcing metal wire 8 is fixedly installed inside the cavity. With the setting of the outer protective component 5 and the reinforcing metal wire 8, the reinforcing metal wire 8 is used to improve the tensile strength of the bend body 1. The extruded polyethylene layer 501 and polyurethane layer 502 can protect the outer layer of the bend body 1, avoid deformation and cracking caused by the temperature difference between the inside and outside of the bend body 1, and extend the service life of the bend body 1.

[0028] As shown in Figure 4, the sealing assembly 3 includes a silicone ring 301 and a rubber ring 302. The silicone ring 301 is fitted onto the surface of the connecting threaded pipe 2, and the rubber ring 302 is fitted onto the surface of the silicone ring 301.

[0029] With the sealing component 3, when the bend body 1 is connected to the external pipe, the silicone ring 301 and the rubber ring 302 work together to seal the connection of the threaded pipe 2. When the silicone ring 301 is under pressure, it can better fill the connection gap, resulting in a better sealing effect.

[0030] As shown in Figure 3, the outer protective component 5 includes an extruded polyethylene layer 501 and a polyurethane layer 502. The extruded polyethylene layer 501 is fixedly disposed on the surface of the bent pipe body 1, and the polyurethane layer 502 is fixedly disposed on the surface of the extruded polyethylene layer 501.

[0031] By setting the outer protective component 5, the extruded polyethylene layer 501 and polyurethane layer 502 can protect the outer layer of the bent pipe body 1, avoid deformation and cracking caused by the temperature difference between the inside and outside of the bent pipe body 1, and extend the service life of the bent pipe body 1.

[0032] As shown in Figure 2, the reinforcing component 6 includes a steel wire braided layer 601 and a high-strength rubber 602. The steel wire braided layer 601 is fixedly disposed at the bend of the pipe body 1, and the high-strength rubber 602 is fixedly disposed on the surface of the steel wire braided layer 601.

[0033] By setting up the reinforcing component 6, the steel wire braided layer 601 and the high-strength rubber 602 can improve the strength and pressure resistance of the bending point of the pipe body 1, while also having good flexibility, reducing excessive stress and impact caused by local bending, and reducing the risk of breakage at the bend.

[0034] As shown in Figure 3, there are four sets of reinforcing metal wires 8, and the four sets of reinforcing metal wires 8 are distributed in a ring array.

[0035] By setting up the reinforcing metal wires 8, the four sets of reinforcing metal wires 8 can be used to improve the tensile strength of the pipe body 1 and prevent the pipe body 1 from breaking due to external tension.

[0036] As shown in Figure 3, an inner lining layer 4 is fixedly installed on the inner wall of the bent pipe body 1. The material of the inner lining layer 4 is polytetrafluoroethylene.

[0037] The inner lining layer 4 is designed to improve the corrosion resistance of the bend body 1, preventing damage to the bend body 1 caused by the transport of corrosive media and thus affecting its service life.

[0038] As shown in Figure 4, there are two sets of connecting threaded pipe 1 and sealing assembly 3, and the two sets of connecting threaded pipe 1 and sealing assembly 3 are respectively fixed at both ends of the bent pipe body 1.

[0039] The connection to the threaded pipe 1 serves to connect to external pipes.

[0040] The working principle of this utility model is as follows: Four sets of reinforcing metal wires 8 can be used to improve the tensile strength of the pipe body 1 and prevent the pipe body 1 from breaking due to external tension. The extruded polyethylene layer 501 and polyurethane layer 502 can protect the outer layer of the pipe body 1 and prevent deformation and cracking caused by the temperature difference between the inside and outside of the pipe body 1, thus extending the service life of the pipe body 1.

[0041] The steel wire braided layer 601 and high-strength rubber 602 can improve the strength and pressure resistance of the bending part of the pipe body 1, while having good flexibility, reducing excessive stress and impact caused by local bending, and reducing the risk of breakage at the bend. The inner lining layer 4 plays a role in improving the corrosion resistance of the pipe body 1, avoiding damage to the pipe body 1 caused by transporting corrosive media, which would affect its service life.

[0042] When the bent pipe body 1 is connected to the external pipe, the silicone ring 301 and the rubber ring 302 work together to seal the connection of the threaded pipe 2. The silicone ring 301 can better fill the connection gap when under pressure, resulting in a better sealing effect.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A long-service-life bent pipe, comprising a bent pipe body (1), characterized in that: Both ends of the bent pipe body (1) are fixedly provided with connecting threaded pipes (2), and the surface of the connecting threaded pipes (2) is fitted with a sealing component (3); the surface of the bent pipe body (1) is fixedly provided with an outer protective component (5); the bending part of the bent pipe body (1) is fixedly provided with a reinforcing component (6), the surface of the reinforcing component (6) is coated with a polyurethane coating (7), the inner wall of the bent pipe body (1) is provided with a cavity, and a reinforcing metal wire (8) is fixedly provided inside the cavity.

2. The long-service-life bent pipe according to claim 1, characterized in that, The sealing assembly (3) includes a silicone ring (301) and a rubber ring (302). The silicone ring (301) is fitted onto the surface of the connecting threaded pipe (2), and the rubber ring (302) is fitted onto the surface of the silicone ring (301).

3. The long-service-life bent pipe according to claim 1, characterized in that, The outer protective component (5) includes an extruded polyethylene layer (501) and a polyurethane layer (502). The extruded polyethylene layer (501) is fixedly disposed on the surface of the bent pipe body (1), and the polyurethane layer (502) is fixedly disposed on the surface of the extruded polyethylene layer (501).

4. The long-service-life bent pipe according to claim 1, characterized in that, The reinforcing component (6) includes a steel wire braided layer (601) and a high-strength rubber (602). The steel wire braided layer (601) is fixedly disposed at the bend of the pipe body (1), and the high-strength rubber (602) is fixedly disposed on the surface of the steel wire braided layer (601).

5. A long-service-life bent pipe according to claim 1, characterized in that, The number of the reinforcing metal wires (8) is four groups, and the four groups of reinforcing metal wires (8) are distributed in a ring array.

6. A long-service-life bent pipe according to claim 1, characterized in that, The inner wall of the bent pipe body (1) is fixedly provided with an inner lining layer (4), and the material of the inner lining layer (4) is polytetrafluoroethylene.

7. A long-service-life bent pipe according to claim 1, characterized in that, The number of the connecting threaded pipe (2) and the sealing assembly (3) are both two sets, and the two sets of the connecting threaded pipe (2) and the sealing assembly (3) are respectively fixed at both ends of the bent pipe body (1).

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