Anti-corrosion and antioxidation electric heating tube shell structure

Abstract

The utility model discloses an anticorrosive antioxidative electric heating tube shell structure, and the device includes: the pipe body, one end of pipe body is equipped with end cap, the end cap one end is equipped with two lead, the pipe body includes base layer, anticorrosive layer, antioxidative layer gradually from inside to outside, the pipe body outer surface is equipped with oblique grid groove. The utility model's advantage lies in: the utility model discloses through the unique multilayer structure design, the reasonable selection of each layer material and the innovative application of oblique grid groove and super -hydrophobic coating, has promoted the anticorrosive and antioxidative performance of electric heating tube shell from multiple dimensions, effectively solved the problem that traditional electric heating tube shell is vulnerable to corrosion and oxidation under complex harsh environment, prolongs the service life of electric heating tube, improves the stability and reliability of equipment overall operation.

Description

Technical Field

[0001] This utility model belongs to the field of electric heating element technology, specifically relating to a corrosion-resistant and oxidation-resistant electric heating tube shell structure. Background Technology

[0002] Electric heating elements are widely used as key heating components in numerous fields such as industrial heating and household appliances. However, the outer shell of electric heating elements often faces complex and harsh conditions in actual working environments, such as humid water vapor environments, corrosive chemical media environments, and high-temperature oxidizing environments. Under the influence of these adverse factors, the outer shell of traditional electric heating elements is highly susceptible to corrosion and oxidation. Corrosion leads to thinning of the outer shell material and a decrease in structural strength, while oxidation deteriorates the surface properties of the outer shell, thereby causing safety hazards such as leakage and short circuits in the electric heating element, significantly shortening its service life, and affecting the overall stability and reliability of the equipment.

[0003] Therefore, there is an urgent need to provide a corrosion-resistant and oxidation-resistant heating tube shell structure to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant and oxidation-resistant electric heating tube shell structure to solve the technical problem that traditional electric heating tube shells are easily subject to corrosion and oxidation.

[0005] To solve the above-mentioned technical problems, this utility model provides a corrosion-resistant and oxidation-resistant electric heating tube shell structure, including: a tube body, an end cap at one end of the tube body, two leads at one end of the end cap, the tube body including a base layer, a corrosion-resistant layer and an oxidation-resistant layer from the inside to the outside, and an oblique grid groove on the outer surface of the tube body.

[0006] As further explained, the base layer and the anti-corrosion layer are bonded to each other, and the anti-corrosion layer and the anti-oxidation layer are bonded to each other.

[0007] As further explained, the base material is 316L stainless steel, the anti-corrosion layer material is an epoxy resin-glass flake composite coating, and the anti-oxidation layer material is a titanium nitride coating.

[0008] As a further explanation, the inclination angle of the oblique mesh groove is between 30° and 60°, and the groove is coated with a silica superhydrophobic coating.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. The tube body is constructed from the inside out with a base layer, an anti-corrosion layer, and an anti-oxidation layer, forming a multi-layered protective system. The base layer is made of 316L stainless steel, which inherently possesses excellent corrosion resistance. The anti-corrosion layer uses an epoxy resin-glass flake composite coating. This coating has a dense structure that effectively blocks the penetration of corrosive media (such as moisture and chemical media), greatly reducing the probability of direct contact between corrosive media and the base layer, and significantly improving the overall corrosion resistance of the heating element's outer shell. An anti-oxidation layer is then applied outside the anti-corrosion layer, and the anti-oxidation layer material is titanium nitride coating. Titanium nitride has excellent chemical stability and oxidation resistance. Under high-temperature environments, it can form a dense oxide film, preventing further erosion of the outer shell by oxidizing substances such as oxygen. This effectively protects the tube structure, prevents surface performance degradation due to oxidation, avoids safety hazards such as leakage and short circuits caused by oxidation, and ensures the stable operation of the heating element in high-temperature oxidizing environments.

[0011] 2. The outer surface of the heating element is equipped with inclined grid grooves at an angle between 30° and 60°. This specially designed grid groove structure not only increases the surface area of ​​the outer shell but also helps dissipate heat to a certain extent, allowing the heat generated by the heating element during operation to be dissipated more effectively, reducing the shell temperature, and indirectly reducing the impact of high temperatures on the anti-corrosion and anti-oxidation layers, thus extending the service life of each coating layer. Furthermore, the grooves are coated with a silica superhydrophobic coating. This superhydrophobic coating gives the shell surface excellent hydrophobic properties; water droplets form a large contact angle on the surface and quickly roll off, making it difficult for them to remain on the surface. This characteristic effectively reduces the adhesion and accumulation of moisture on the shell surface, lowering the risk of moisture erosion of the anti-corrosion and anti-oxidation layers, further enhancing the shell's corrosion and oxidation resistance, and ensuring the stable performance of the heating element in humid environments.

[0012] 3. The base layer and the anti-corrosion layer are bonded together, as are the anti-corrosion layer and the anti-oxidation layer. This tight bonding ensures a strong bond between the layers, forming a unified whole. During the operation of the heating element, even under the influence of thermal expansion and contraction, vibration, or other forces, the layers will not easily delaminate or detach, ensuring that the outer shell structure remains intact. This allows it to continuously maintain excellent anti-corrosion and anti-oxidation properties, improving the reliability and stability of the heating element's outer shell.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a preferred three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structural composition of the tube body of this utility model.

[0018] In the picture:

[0019] 1. Pipe body, 2. End cap, 3. Lead wire, 4. Base layer, 5. Anti-corrosion layer, 6. Anti-oxidation layer, 7. Slanted grid groove. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] Reference Figure 1-2 A corrosion-resistant and oxidation-resistant electric heating tube shell structure is characterized by comprising: a tube body 1, an end cap 2 at one end of the tube body 1, two lead wires 3 at one end of the end cap 2, and the tube body 1 comprising, from the inside out, a base layer 4, an anti-corrosion layer 5, and an anti-oxidation layer 6, with oblique mesh grooves 7 on the outer surface of the tube body 1. The corrosion-resistant and oxidation-resistant electric heating tube shell structure of this utility model is composed of the tube body 1, the end cap 2, and the lead wires 3. The tube body 1, as the core component, constructs a multi-layered protective system by sequentially setting the base layer 4, the anti-corrosion layer 5, and the anti-oxidation layer 6 from the inside out. The base layer 4 provides basic structural support for the shell, while the anti-corrosion layer 5 and the anti-oxidation layer 6 provide targeted protection against corrosion and oxidation, respectively. The oblique mesh grooves 7 on the outer surface of the tube body 1 effectively reduce the adhesion and accumulation of moisture on the shell surface and increase the heat dissipation area of ​​the shell, thereby improving the shell's adaptability to complex environments.

[0022] like Figure 1-2As shown, the base layer 4 and the anti-corrosion layer 5 are bonded together, and the anti-corrosion layer 5 and the anti-oxidation layer 6 are bonded together. This stable interlayer bonding helps each layer material fully exert its anti-corrosion and anti-oxidation properties, preventing the intrusion of corrosive media due to gaps between layers, thus ensuring the stability and reliability of the outer shell performance.

[0023] like Figure 1-2 As shown, the base layer 4 is made of 316L stainless steel, the anti-corrosion layer 5 is made of epoxy resin-glass flake composite coating, and the anti-oxidation layer 6 is made of titanium nitride coating. The base layer 4, made of 316L stainless steel, inherently possesses excellent corrosion resistance. The anti-corrosion layer 5 uses an epoxy resin-glass flake composite coating, which has a dense structure that effectively blocks the penetration of corrosive media (such as moisture and chemical media), greatly reducing the probability of direct contact between corrosive media and the base layer, and significantly improving the overall corrosion resistance of the heating element's outer shell. An anti-oxidation layer 6, also made of titanium nitride, is installed outside the anti-corrosion layer 5. Titanium nitride has excellent chemical stability and oxidation resistance, and at high temperatures, it can form a dense oxide film, preventing further erosion of the outer shell by oxidizing substances such as oxygen. This effectively protects the tube structure, prevents surface performance degradation due to oxidation, avoids safety hazards such as leakage and short circuits caused by oxidation, and ensures the stable operation of the heating element in high-temperature oxidizing environments.

[0024] like Figure 1-2 As shown, the inclination angle of the oblique grid groove 7 is between 30° and 60°, and the inside of the oblique grid groove 7 is coated with a silica superhydrophobic coating. This specially designed grid groove structure not only increases the surface area of ​​the shell, but also helps heat dissipation to a certain extent, allowing the heat generated by the heating element during operation to be dissipated more effectively, reducing the shell temperature, and indirectly reducing the impact of high temperature on the anti-corrosion layer 5 and the anti-oxidation layer 6, thus extending the service life of each coating layer. Furthermore, the silica superhydrophobic coating inside the oblique grid groove 7 gives the shell surface excellent hydrophobic properties; water droplets form a large contact angle on the surface and quickly roll off, making it difficult for them to remain on the surface. This characteristic effectively reduces the adhesion and accumulation of moisture on the shell surface, reducing the risk of moisture erosion of the anti-corrosion layer 5 and the anti-oxidation layer 6, further improving the shell's anti-corrosion and anti-oxidation capabilities, and ensuring the stable performance of the heating element in humid environments.

[0025] All components selected in this application (parts whose specific structures are not described) are general standard parts or parts known to those skilled in the art, and their structures and principles can be obtained by those skilled in the art through technical manuals.

[0026] This knowledge can be obtained through conventional experimental methods.

[0027] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0028] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0029] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A corrosion-resistant and oxidation-resistant heating element shell structure, characterized in that, include: The tube body (1) has an end cap (2) at one end and two lead wires (3) at one end of the end cap (2). The tube body (1) includes a base layer (4), an anti-corrosion layer (5), and an anti-oxidation layer (6) from the inside to the outside. The outer surface of the tube body (1) is provided with an oblique grid groove (7).

2. The anticorrosion and antioxidation electric heating tube shell structure according to claim 1, characterized in that, The base layer (4) and the anti-corrosion layer (5) are bonded to each other, and the anti-corrosion layer (5) and the anti-oxidation layer (6) are bonded to each other.

3. The anticorrosion and antioxidation electric heating tube shell structure according to claim 2, characterized in that, The base layer (4) is made of 316L stainless steel, the anti-corrosion layer (5) is made of epoxy resin-glass flake composite coating, and the anti-oxidation layer (6) is made of titanium nitride coating.

4. The anticorrosion and antioxidation electric heating tube shell structure according to claim 1, characterized in that, The inclination angle of the oblique mesh groove (7) is between 30° and 60°, and the groove of the oblique mesh groove (7) is coated with a silicon dioxide superhydrophobic coating.

Images