TA2 titanium pipe spiral corrugated reinforced type anti-corrosion connecting structure suitable for strong acid and alkali environments

Abstract

The utility model discloses a TA2 titanium tube spiral corrugation enhancement type anti-corrosion connecting structure suitable for strong acid and alkali environments, and relates to the field of titanium tubes, the TA2 titanium tube spiral corrugation enhancement type anti-corrosion connecting structure comprises a connecting sleeve, the inner wall of the connecting sleeve is bonded with anti-corrosion sealant, the outer wall of the anti-corrosion sealant is bonded with a titanium tube main body, the outer wall of the titanium tube main body is attached with a titanium alloy coating, and the titanium alloy coating is coated with a titanium alloy coating. Silicon carbide ceramic is attached to the outer wall of the titanium alloy coating. The titanium pipe body is arranged to conduct clamping and tensioning connection on the connecting sleeve, the connecting sleeve is tensioned on the titanium pipe body, tight mechanical engagement is formed between the connecting sleeve and the titanium pipe body, meanwhile, corrosion-resistant sealant is injected into a connecting gap, permeation of strong acid and alkali media can be effectively prevented, and the corrosion-resistant sealing performance of the titanium pipe is improved. And after curing, chemical bonding can be formed with the connecting sleeve and the surface of the titanium tube main body, so that the overall corrosion resistance of the connecting part is enhanced, and the reliability and stability of expansion connection are ensured.

Description

Technical Field

[0001] This utility model relates to the field of titanium tubes, specifically a spiral corrugated reinforced anti-corrosion connection structure for TA2 titanium tubes suitable for strong acid and alkali environments. Background Technology

[0002] TA2 titanium pipes are often used in corrosive environments such as strong acids and alkalis due to their strong corrosion resistance and high strength. At the same time, the spiral corrugated reinforced structure improves the resistance to deformation. However, ordinary connection structures are susceptible to corrosion, which can lead to sealing failure and pipe damage. Traditional flanges and welded connections have shortcomings such as easy corrosion of sealing materials and the impact of welding on corrosion resistance. Simple coating corrosion protection is also difficult to maintain for long. Therefore, a spiral corrugated reinforced anti-corrosion connection structure for TA2 titanium pipes suitable for strong acid and alkali environments is needed.

[0003] When connecting existing TA2 titanium pipes, welding and flange connections are commonly used. During welding, the high temperature alters the microstructure of the titanium pipe joint, creating a heat-affected zone. In this zone, the originally dense and stable oxide film on the titanium pipe surface is destroyed, exposing the metal substrate directly to a strong acid or alkali environment, making it highly susceptible to corrosion. Furthermore, the stress concentration generated during welding accelerates the corrosion process at the joint. Flange connections require auxiliary materials such as gaskets to ensure a sealing effect. However, in strong acid or alkali environments, the corrosion resistance of these sealing materials varies. Even if a seal is initially achieved, the gasket material will gradually corrode over time, leading to seal failure. Corrosive media will then seep into the gaps at the joint, corroding the TA2 titanium pipe. At the same time, simple coating corrosion protection is not durable. Therefore, there is an urgent need for a spiral corrugated reinforced anti-corrosion connection structure for TA2 titanium pipes suitable for strong acid and alkali environments. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a spiral corrugated reinforced anti-corrosion connection structure for TA2 titanium tubes suitable for strong acid and alkali environments. This addresses the common issues encountered with existing spiral corrugated reinforced anti-corrosion connection structures for TA2 titanium tubes in strong acid and alkali environments, such as welding and flange connections. During welding, the high temperature alters the microstructure of the titanium tube connection, creating a heat-affected zone. In this zone, the originally dense and stable oxide film on the titanium tube surface is destroyed, exposing the metal substrate directly to the strong acid and alkali environment, making it highly susceptible to corrosion. Furthermore, the stress concentration generated during welding accelerates the corrosion process at the connection. Flange connections require auxiliary materials such as gaskets to ensure a sealing effect. However, in strong acid and alkali environments, the corrosion resistance of these sealing materials varies. Even if a seal is initially achieved, the gasket material gradually corrodes over time, leading to seal failure. Corrosive media then seep into the gaps at the connection, corroding the TA2 titanium tube. Additionally, simple coating corrosion protection is not durable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a TA2 titanium tube spiral corrugated reinforced anti-corrosion connection structure suitable for strong acid and alkali environments, including a connecting sleeve, wherein the inner wall of the connecting sleeve is bonded with a corrosion-resistant sealant, and the outer wall of the corrosion-resistant sealant is bonded with a titanium tube body.

[0006] The outer wall of the titanium tube body is coated with a titanium alloy coating, the outer wall of the titanium alloy coating is coated with silicon carbide ceramic, and the outer wall of the silicon carbide ceramic is coated with an organic-inorganic hybrid coating.

[0007] Preferably, the inner wall of the connecting sleeve is in close contact with the outer wall of the corrosion-resistant sealant, and the inner diameter of the connecting sleeve is larger than the outer diameter of the corrosion-resistant sealant.

[0008] Preferably, the connecting sleeve is engaged with the titanium tube body, and one end of the titanium tube body has a slotted design.

[0009] Preferably, the titanium tube body is symmetrically arranged about the central axis of the connecting sleeve, and the connecting sleeve is arranged parallel to the titanium tube body.

[0010] Preferably, the outer wall of the titanium alloy coating is in close contact with the outer wall of the silicon carbide ceramic, and the length of the outer wall of the titanium alloy coating is the same as the length of the outer wall of the silicon carbide ceramic.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model uses a titanium tube body to engage and tighten the connecting sleeve. The connecting sleeve tightens onto the titanium tube body, forming a tight mechanical engagement between the connecting sleeve and the titanium tube body. At the same time, corrosion-resistant sealant is injected into the connection gap, which can effectively prevent the penetration of strong acid and alkali media. After curing, it can also form a chemical bond with the surface of the connecting sleeve and the titanium tube body, enhancing the overall corrosion resistance of the connection and ensuring the reliability and stability of the tightening connection.

[0013] 2. This utility model achieves a tight bond between the titanium alloy coating and the silicon carbide ceramic by setting a titanium alloy coating. A gradient composite coating is prepared on the surface of the titanium tube main connecting structure. From the inside out, the first layer is a titanium alloy coating with a material similar to that of the titanium tube, which enhances the bonding force with the substrate. The second layer is silicon carbide ceramic, which uses the high hardness and chemical stability of ceramic to resist the corrosion of strong acids and alkalis. The outermost layer is an organic-inorganic hybrid coating. The organic part provides good flexibility, and the inorganic part enhances corrosion resistance and wear resistance. Through this gradient composite protective structure, the durability of the connecting structure in strong acid and alkali environments is improved from the surface protection level. Moreover, the gradient design of the coating can reduce the stress concentration problem caused by the difference in material properties. Attached Figure Description

[0014] Figure 1This is a perspective view of the present utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model from a vertical sectional view;

[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0017] Figure 4 This utility model Figure 2 Enlarged structural diagram of section B in the middle.

[0018] In the diagram: 1. Connecting sleeve; 2. Corrosion-resistant sealant; 3. Titanium tube body; 4. Titanium alloy coating; 5. Silicon carbide ceramic; 6. Organic-inorganic hybrid coating. Detailed Implementation

[0019] 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.

[0020] The embodiments of this utility model will be described below based on its overall structure.

[0021] Please see Figure 1-4 A TA2 titanium tube spiral corrugated reinforced anti-corrosion connection structure suitable for strong acid and alkali environments includes a connecting sleeve 1. The inner wall of the connecting sleeve 1 is bonded with a corrosion-resistant sealant 2. The inner wall of the connecting sleeve 1 and the outer wall of the corrosion-resistant sealant 2 are tightly fitted, and the inner diameter of the connecting sleeve 1 is larger than the outer diameter of the corrosion-resistant sealant 2. A titanium tube body 3 is bonded to the outer wall of the corrosion-resistant sealant 2. The connecting sleeve 1 and the titanium tube body 3 are engaged and connected. One end of the titanium tube body 3 has a slotted design, and the titanium tube body 3 is aligned with the central axis of the connecting sleeve 1. The connecting sleeve 1 is set parallel to the titanium tube body 3. The connecting sleeve 1 is engaged and tightened by the titanium tube body 3. The connecting sleeve 1 is tightened on the titanium tube body 3, forming a tight mechanical engagement between the connecting sleeve 1 and the titanium tube body 3. At the same time, corrosion-resistant sealant 2 is injected into the connection gap, which can effectively prevent the penetration of strong acid and alkali media. After curing, it can also form a chemical bond with the surface of the connecting sleeve 1 and the titanium tube body 3, enhancing the overall corrosion resistance of the connection and ensuring the reliability and stability of the tightened connection.

[0022] Please see Figure 1-4This is a TA2 titanium tube spiral corrugated reinforced anti-corrosion connection structure suitable for strong acid and alkali environments. The outer wall of the titanium tube body 3 is coated with a titanium alloy coating 4, and the outer wall of the titanium alloy coating 4 is coated with a silicon carbide ceramic 5. The outer walls of the titanium alloy coating 4 and the silicon carbide ceramic 5 are tightly bonded, and the length of the outer wall of the titanium alloy coating 4 is the same as the length of the outer wall of the silicon carbide ceramic 5. An organic-inorganic hybrid coating 6 is bonded to the outer wall of the silicon carbide ceramic 5. The titanium alloy coating 4 provides a tight bond to the silicon carbide ceramic 5. The surface of the connection structure of the titanium tube body 3 is prepared with a gradient composite... The coating consists of several layers. The first layer is a titanium alloy coating 4, which is similar in material to the titanium tube, to enhance the bonding strength with the substrate. The second layer is silicon carbide ceramic 5, which utilizes the high hardness and chemical stability of ceramics to resist the corrosion of strong acids and alkalis. The outermost layer is an organic-inorganic hybrid coating 6, where the organic part provides good flexibility and the inorganic part enhances corrosion resistance and wear resistance. Through this gradient composite protective structure, the durability of the connection structure in strong acid and alkali environments is improved from the surface protection level. Furthermore, the gradient design of the coating can reduce stress concentration problems caused by differences in material properties.

[0023] Working principle: In use, the device is taken out and placed in the designated position. The titanium alloy coating 4 is applied to the titanium tube body 3, the silicon carbide ceramic 5 is bonded to the titanium alloy coating 4, and the organic-inorganic hybrid coating 6 is bonded to the silicon carbide ceramic 5. Finally, a specific-sized expansion groove is machined at the connecting end of the titanium tube body 3. The connecting sleeve 1 is then tightened onto the titanium tube body 3 using a special expansion tool, so that a tight mechanical engagement is formed between the connecting sleeve 1 and the titanium tube body 3. Then, high-performance corrosion-resistant sealant 2 is injected into the connection gap, which can effectively prevent the penetration of strong acid and alkali media. This completes the use of the device. The contents not described in detail in this manual are existing technologies known to those skilled in the art.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spiral corrugated reinforced anti-corrosion connection structure for TA2 titanium tubes suitable for strong acid and alkali environments, comprising a connecting sleeve (1), characterized in that: The inner wall of the connecting sleeve (1) is bonded with corrosion-resistant sealant (2), and the outer wall of the corrosion-resistant sealant (2) is bonded with titanium tube body (3). The outer wall of the titanium tube body (3) is coated with a titanium alloy coating (4), the outer wall of the titanium alloy coating (4) is coated with a silicon carbide ceramic (5), and the outer wall of the silicon carbide ceramic (5) is coated with an organic-inorganic hybrid coating (6).

2. The TA2 titanium tube spiral corrugated reinforced anti-corrosion connection structure suitable for strong acid and alkali environments according to claim 1, characterized in that: The inner wall of the connecting sleeve (1) is tightly fitted with the outer wall of the corrosion-resistant sealant (2), and the inner diameter of the connecting sleeve (1) is larger than the outer diameter of the corrosion-resistant sealant (2).

3. The TA2 titanium tube spiral corrugated reinforced anti-corrosion connection structure suitable for strong acid and alkali environments according to claim 1, characterized in that: The connecting sleeve (1) is engaged with the titanium tube body (3), and one end of the titanium tube body (3) is slotted.

4. The TA2 titanium tube spiral corrugated reinforced anti-corrosion connection structure suitable for strong acid and alkali environments according to claim 1, characterized in that: The titanium tube body (3) is symmetrically arranged with respect to the central axis of the connecting sleeve (1), and the connecting sleeve (1) is arranged parallel to the titanium tube body (3).

5. The TA2 titanium tube spiral corrugated reinforced anti-corrosion connection structure suitable for strong acid and alkali environments according to claim 1, characterized in that: The outer wall of the titanium alloy coating (4) is closely attached to the outer wall of the silicon carbide ceramic (5), and the length of the outer wall of the titanium alloy coating (4) is the same as the length of the outer wall of the silicon carbide ceramic (5).

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