Corrosion resistant tubing

Abstract

The utility model belongs to oil pipe technical field especially relates to a kind of corrosion-resistant oil pipe;Pipe body;Pipe joint, with pipe body is connected;Sealing element, between pipe body and pipe joint are set;Wherein, pipe joint includes: joint body;Joint end cover, set in the upper of joint body;Tubular shell, set in the lower of joint body.Joint body and tubular shell, the contact site of joint body and pipe body are sealed by sealing groove and sealing ring sticking, avoid medium from connecting gap leakage;Sealing portion is integrally formed between joint end cover and pipe body side wall, reduce the risk of sealing failure caused by splicing gap;The reinforcing ring in L-shaped groove can enhance the structural rigidity of sealing portion, prevent sealing portion from pressure or vibration deformation, cooperate the fastening effect of outside fixed ring, further guarantee the close sticking of sealing portion and pipe body, joint end cover, applicable to high corrosive medium transmission scene.

Description

Technical Field

[0001] This utility model belongs to the field of oil pipe technology, and in particular relates to a corrosion-resistant oil pipe. Background Technology

[0002] In the current field of fluid transportation, especially in scenarios involving the transmission of corrosive media such as fuel oil and lubricating oil, corrosion-resistant tubing is widely used as a core transportation component. It is typically connected to the pipeline using tubing fittings, and the sealing performance between the fittings and the tubing is ensured by tubing seals. However, existing technologies still have significant shortcomings: on the one hand, the sealing performance is not good enough, and the fit between the seals and the fitting end caps and tubing is insufficient, making localized leaks likely; on the other hand, the disassembly and assembly structure of tubing fittings is poorly designed. Most fittings lack dedicated disassembly slots or auxiliary disassembly structures, making the separation of the fitting end cap from the tubular shell and the fitting from the tubing cumbersome during maintenance, requiring considerable time and tools. This makes it difficult to meet the stringent requirements for sealing performance, ease of disassembly and assembly, and structural stability of tubing components in highly corrosive, high-frequency maintenance scenarios. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned technical problems by providing a corrosion-resistant oil pipe that achieves both corrosion resistance and good sealing performance.

[0004] In view of this, the present invention provides a corrosion-resistant oil pipe, comprising:

[0005] tube body;

[0006] Pipe fitting, which connects to the pipe body;

[0007] A sealing element is installed between the pipe body and the pipe joint;

[0008] Pipe fittings include:

[0009] Connector body;

[0010] The connector end cap is located on top of the connector body;

[0011] A tubular housing is located below the connector body.

[0012] In the above technical solution, the pipe fitting further includes:

[0013] Several sealing grooves are provided at the side wall where the joint body connects to the tubular shell and at the side wall where the joint body connects to the tube.

[0014] Several sealing rings are placed inside the sealing groove.

[0015] In the above technical solution, the pipe fitting further includes:

[0016] Several disassembly slots are provided on the top of the connector end cap and on the side wall of the tubular housing.

[0017] In the above technical solution, the connector end cap further includes:

[0018] The snap-fit ​​part extends into the disassembly groove on the side wall of the tubular housing on both sides of the connector end cap.

[0019] In the above technical solution, the sealing element further includes:

[0020] The sealing part is integrally formed between the connector end cap and the side wall of the pipe body.

[0021] In the above technical solution, the sealing element further includes:

[0022] A retaining ring is fitted onto the outside of the sealing part.

[0023] In the above technical solution, the sealing element further includes:

[0024] The L-shaped groove is located inside the sealing part;

[0025] A reinforcing ring is installed inside the L-shaped groove.

[0026] In the above technical solution, the pipe body is further composed of corrosion-resistant rubber as the main component and a blend of FKM, ECO, NBR, and PVC as the main component.

[0027] The beneficial effects of this utility model are as follows:

[0028] 1. The contact points between the connector body and the tubular shell, and between the connector body and the pipe body, are sealed by sealing grooves and sealing rings to prevent media leakage from the connection gaps; the sealing part is integrally formed between the connector end cap and the side wall of the pipe body, reducing the risk of seal failure caused by splicing gaps; the reinforcing ring in the L-shaped groove can enhance the structural rigidity of the sealing part and prevent the sealing part from deforming due to pressure or vibration. Combined with the fastening effect of the outer fixing ring, it further ensures the tight fit between the sealing part and the pipe body and connector end cap, which is suitable for high corrosive media transmission scenarios.

[0029] 2. The disassembly grooves on the top of the connector end cap and the side wall of the tubular housing provide clear points of force for the tool, eliminating the need to find the disassembly location separately; the extensions on both sides of the connector end cap are embedded in the disassembly grooves of the tubular housing, which not only achieves a stable fit between the end cap and the tubular housing, but also allows the end cap and the tubular housing to be quickly separated by prying the extensions in the disassembly groove with the tool, thereby facilitating the disassembly or replacement of the tube and seals, reducing maintenance time and labor costs.

[0030] 3. The pipe body is made of corrosion-resistant rubber such as FKM, ECO, and NBR as the main components, which can resist long-term erosion by corrosive media such as fuel and lubricating oil, extend the service life of the pipe body, and is suitable for high-frequency vibration applications such as vehicles and industrial equipment. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a sectional view I of the present invention;

[0033] Figure 3 This is a cross-sectional view of the oil pipe seal of this utility model;

[0034] Figure 4 This is a sectional view II of the present invention;

[0035] The markings in the diagram are as follows: pipe body 1, pipe connector 2, seal 3, connector body 21, connector end cap 22, tubular shell 23, sealing groove 24, sealing ring 25, disassembly groove 26, snap fastener 27, sealing part 31, fixing ring 32, L-shaped groove 33, reinforcing ring 34. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0037] Example 1:

[0038] This embodiment provides a corrosion-resistant oil pipe, including:

[0039] tube body 1;

[0040] Pipe connector 2 is connected to pipe body 1;

[0041] The sealing element 3 is disposed between the pipe body 1 and the pipe joint 2.

[0042] Pipe fitting 2 includes:

[0043] Connector body 21;

[0044] The connector end cap 22 is located above the connector body 21;

[0045] A tubular housing 23 is located below the connector body 21.

[0046] In this embodiment, by specially setting a sealing element 3 between the pipe body 1 and the pipe connector 2, the tiny gap between the two connection surfaces can be tightly filled, effectively blocking the path of liquid leakage from the connection part of the connector 2, greatly improving the sealing reliability, and avoiding waste and safety hazards caused by sealing failure. In addition, the overall structure design is simple and highly adaptable. The connection method between the pipe body 1 and the pipe connector 2 is easy to assemble and maintain. The upper connector end cap 22 can protect the upper connection area of ​​the connector body 21, preventing dust, water vapor and other impurities from entering to avoid affecting the sealing performance or causing component corrosion. The lower tubular shell 23 can provide a stable installation carrier for the connection between the connector body 21 and the external pipeline, and at the same time play a supporting and protective role for the extended pipeline, reducing the loosening of the connection caused by vibration and collision. The connector body 21 and the tubular shell 23 can be made of corrosion-resistant metal or high-strength corrosion-resistant polymer material to ensure that they are not easily corroded or deformed when in contact with the transported medium and the external environment for a long time. The connector end cap 22 can be matched with the same material or elastic corrosion-resistant material such as corrosion-resistant rubber composite layer to take into account both protection and sealing adaptability. The tubular shell can be integrally formed on the outer edge of the oil hole that connects to the oil pipe.

[0047] Example 2:

[0048] This embodiment provides a corrosion-resistant oil pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] Pipe fitting 2 also includes:

[0050] Several sealing grooves 24 are provided at the side wall where the connector body 21 connects to the tubular shell 23 and at the side wall where the connector body 21 connects to the tube body 1.

[0051] Several sealing rings 25 are disposed inside the sealing groove 24.

[0052] In this embodiment, structurally, sealing grooves 24 are provided at the joint body 21 and the tubular shell 23, and at the joint body 21 and the pipe body 1, and sealing rings 25 are embedded in the grooves. The sealing grooves 24 can provide precise positioning and stable support for the sealing rings 25, preventing the sealing rings 25 from shifting due to vibration or assembly deviation. At the same time, the sealing rings 25 can fully fill the tiny gaps between the two parts, forming a double sealing defense line, effectively solving the leakage problem of traditional joints caused by uneven mating surfaces or loose parts. In terms of materials, the sealing rings 25 are made of elastic corrosion-resistant materials such as fluororubber and nitrile rubber, which can withstand the long-term erosion of the conveyed medium and can tightly fit the sealing grooves 24 and the mating surfaces with elastic deformation to ensure the sealing effect.

[0053] Example 3:

[0054] This embodiment provides a corrosion-resistant oil pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] Pipe fitting 2 also includes:

[0056] Several disassembly slots 26 are provided on the top of the connector end cap 22 and on the side wall of the tubular housing 23.

[0057] In this embodiment, from the perspective of use and maintenance, the disassembly groove 26 can be used as a force application point for special tools. When it is necessary to disassemble, repair or replace parts of the pipe joint 2, the tool can be accurately embedded in the groove to avoid slipping during operation and easily apply disassembly force. This effectively solves the problem of disassembly difficulty caused by the smooth surface or lack of force application point of traditional joints. In particular, it can greatly reduce the difficulty of disassembly and labor intensity in the case of component adhesion and increased fastening force that may occur after long-term use.

[0058] Example 4:

[0059] This embodiment provides a corrosion-resistant oil pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0060] The connector end cap 22 includes:

[0061] The snap-fit ​​part 27 and the connector end cap 22 extend on both sides into the disassembly groove 26 on the side wall of the tubular housing 23.

[0062] In this embodiment, structurally, the connector end cap 22 extends into the disassembly groove 26 on both sides of the tubular housing 23. Through the engagement of the snap fastener 27 with the disassembly groove 26, it provides additional positioning and fixing for the connector end cap 22 and the tubular housing 23, preventing the end cap from shifting or loosening due to vibration or collision during long-term use, and further enhancing the overall structural stability of the pipe connector 2.

[0063] Example 5:

[0064] This embodiment provides a corrosion-resistant oil pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] Seal 3 includes:

[0066] The sealing part 31 is integrally formed between the connector end cap 22 and the side wall of the pipe body 1.

[0067] In this embodiment, structurally, the sealing part 31 is integrally formed between the connector end cap 22 and the side wall of the pipe body 1. This structure ensures a stable fit between the sealing part 31, the connector end cap 22, and the side wall of the pipe body 1. Even under long-term vibration and temperature changes, this reduces the risk of deformation or detachment of the sealing part 31, further enhancing sealing stability. In terms of materials, the sealing part 31 can be made of elastic, corrosion-resistant materials such as fluororubber or nitrile rubber. These materials can withstand long-term erosion by the transported medium and, with their excellent elastic deformation capabilities, closely fit the contours of the connector end cap 22 and the side wall of the pipe body 1. Even with slight processing errors, reliable sealing can be achieved. Furthermore, they have strong compatibility with the connector end cap 22 and the side wall of the pipe body 1, preventing aging, detachment, or corrosion failure due to material compatibility issues. The overall design balances sealing performance, structural stability, and corrosion resistance, ensuring the long-term reliable operation of the pipe connector 2.

[0068] Example 6:

[0069] This embodiment provides a corrosion-resistant oil pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] Seal 3 also includes:

[0071] The retaining ring 32 is sleeved on the outside of the sealing part 31.

[0072] In this embodiment, structurally, the retaining ring 32 is sleeved on the outside of the sealing part 31, which can form a continuous radial constraint and support for the sealing part 31, preventing the sealing part 31 from excessive deformation, bulging or displacement under long-term medium pressure or vibration conditions. This ensures that the sealing part 31 always fits tightly against the gap between the connector end cap 22 and the side wall of the pipe body 1, maintaining a stable sealing effect. Especially for high-pressure transmission scenarios, it can effectively prevent the sealing part 31 from failing due to pressure impact. In terms of materials, the retaining ring 32 can be made of high-strength corrosion-resistant materials such as stainless steel, hard anodized aluminum, or polymer materials such as reinforced polyamide and polytetrafluoroethylene. These materials have high mechanical strength and good resistance to environmental aging, which can provide reliable structural support for the sealing part 31 and withstand the erosion of the external environment and medium. While ensuring the reliability of the seal, it extends the service life of the sealing element 3 and improves the adaptability of the pipe connector 2 under complex working conditions.

[0073] Example 7:

[0074] This embodiment provides a corrosion-resistant oil pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0075] Seal 3 also includes:

[0076] L-shaped groove 33 is provided inside sealing part 31;

[0077] The reinforcing ring 34 is set inside the L-shaped groove 33.

[0078] In this embodiment, the L-shaped groove 33 provides a precise installation and positioning space for the reinforcing ring 34, preventing the reinforcing ring 34 from shifting within the sealing part 31. The reinforcing ring 34 can provide targeted support to the sealing part 31 based on its own structural strength. The supporting effect of the reinforcing ring 34 can reduce excessive compression or stretching loss of the sealing part 31, slow down the aging rate of the sealing part 31, and extend the overall service life of the seal. At the same time, it does not affect the elastic deformation capability of the sealing part 31 itself, thus ensuring the reliability of the seal and strengthening the structural durability of the seal. It is especially suitable for complex working conditions such as high pressure and high frequency vibration, further improving the sealing stability and long-term reliability of the pipe joint 2.

[0079] Example 8:

[0080] This embodiment provides a corrosion-resistant oil pipe, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0081] Pipe body 1 is mainly composed of corrosion-resistant rubber, and mainly composed of a blend of FKM, ECO, NBR, NBR and PVC.

[0082] In this embodiment, these rubber materials all possess excellent corrosion resistance, enabling them to withstand the erosion of the medium transported by the pipe body 1 for a long time. This avoids material swelling, aging, or damage caused by the contact between the medium and the pipe wall, effectively extending the service life of the pipe body 1 and reducing maintenance costs and safety hazards caused by pipe wall damage. FKM, ECO, NBR, and blends of NBR and PVC ensure corrosion resistance while also considering economy and processing adaptability, meeting the performance requirements of different usage environments. The rubber material itself has good elasticity and flexibility, making the pipe body 1 easier to bend during assembly to adapt to complex installation spaces. At the same time, it can buffer the impact of external vibrations on the pipe body 1, reducing joint loosening or pipe wall cracking caused by vibration. This not only ensures the transport reliability of the pipe body 1 but also reduces the operational difficulty during assembly and use, achieving a balance between corrosion resistance, practicality, and structural stability.

[0083] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A corrosion resistant tubing characterized by, include: tube body(1); Pipe connector (2) is connected to pipe body (1); A sealing element (3) is provided between the pipe body (1) and the pipe joint (2); Among them, the pipe fitting (2) includes: Connector body (21); The connector end cap (22) is located above the connector body (21); A tubular housing (23) is located below the connector body (21).

2. The corrosion resistant tubing of claim 1, wherein, The pipe fitting (2) further includes: Several sealing grooves (24) are provided at the side wall where the connector body (21) connects to the tubular shell (23) and at the side wall where the connector body (21) connects to the tube body (1). Several sealing rings (25) are disposed inside the sealing groove (24).

3. The corrosion resistant tubing of claim 1, wherein, The pipe fitting (2) further includes: Several disassembly slots (26) are provided on the top of the connector end cap (22) and on the side wall of the tubular housing (23).

4. A corrosion resistant tubing as defined in claim 3, wherein The connector end cap (22) includes: The snap-fit ​​part (27) and the connector end cap (22) extend on both sides into the disassembly groove (26) on the side wall of the tubular housing (23).

5. The corrosion-resistant oil pipe according to claim 1, characterized in that, The seal (3) includes: The sealing part (31) is integrally formed between the connector end cap (22) and the side wall of the tube body (1).

6. The corrosion-resistant oil pipe according to claim 5, characterized in that, The seal (3) further includes: A retaining ring (32) is fitted on the outside of the sealing part (31).

7. A corrosion-resistant oil pipe according to claim 5, characterized in that, The seal (3) further includes: The L-shaped groove (33) is provided inside the sealing part (31); A reinforcing ring (34) is set inside the L-shaped groove (33).

8. The corrosion-resistant oil pipe according to claim 1, characterized in that, The pipe body (1) is mainly composed of corrosion-resistant rubber and a blend of FKM, ECO, NBR, NBR and PVC.

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