Anti-corrosion sleeve

Abstract

The utility model discloses an anti-corrosion sleeve which comprises a connecting part, an anti-corrosion mechanism is arranged on the outer wall of the connecting part, and connecting mechanisms are arranged at the two ends of the connecting part. The service life of the casing pipe can be effectively prolonged through the arranged anti-corrosion mechanism, the maintenance cost caused by corrosion is reduced, the inner wall of the anti-corrosion mechanism is connected with the outer wall of the connecting part in a wrapping mode, the sealing performance of the connecting part is ensured, and therefore invasion of corrosive media is avoided; by means of the arranged connecting mechanism, operation can be conveniently and rapidly conducted when parts need to be maintained or replaced, the maintenance efficiency is greatly improved, the outer wall of the annular groove is connected with the inner wall of the connecting part in an embedded mode, connection is firmer and not prone to loosening due to the embedded mode, a groove is formed in the lower end of the annular groove, and the annular groove is not prone to loosening. Protruding blocks are arranged on the inner walls of the grooves, inserting rods are fixedly connected to the upper ends of the protruding blocks, connecting rods are fixedly connected to the sides, close to each other, of the two inserting rods, and a barrel is fixedly connected to the upper ends of the inserting rods.

Description

Technical Field

[0001] The utility model relates to the technical field of casing pipes, in particular to a corrosion-resistant casing pipe. Background Art

[0002] For the purpose of constructing such a wall bushing, a device in the form of a double sleeve with a threaded nipple at the end, a sealing body and a pressure screw is known. In order to enable a damaged or destroyed device of the type described to be replaced during an existing installation in such a configuration, it is known that the device consists of separate elements, namely a double sleeve divided longitudinally in the middle, a sealing insert divided longitudinally in the middle and a pressure screw divided longitudinally in the middle. With such a configuration, it is possible in a simple manner to insert such device components even during an existing installation;

[0003] Patent CN105089515A discloses a corrosion-resistant oil casing made of pure steel, including an oil casing body 1 and a coupling 3. The end of the oil casing body 1 is provided with an external thread 2; the coupling 3 is provided with an internal thread 4. The material of the oil casing body 1 and the coupling 3 are both pure steel, and the external thread 2 and the internal thread 4 are used in combination.

[0004] At present, the traditional casing structure is relatively simple, with poor corrosion resistance and wear resistance. In addition, the inner wall will inevitably be subjected to huge pressure during the use of the casing. Most of them are one-piece molding structures, which can easily cause the casing to rupture and reduce its service life. They do not have a structure that can be disassembled or replaced. Utility Model Content

[0005] The purpose of the utility model is to provide a corrosion-resistant casing to solve the problems proposed in the above-mentioned background technology that the casing structure is relatively simple, the corrosion resistance and wear resistance are poor, and the inner wall is inevitably subjected to huge pressure during the use of the casing. Most of them are one-piece molding structures, which easily cause the casing to rupture, reduce the service life, and have no structure for disassembly or replacement.

[0006] To achieve the above object, the utility model provides the following technical solution: an anti-corrosion casing, comprising a connecting portion, an outer wall of the connecting portion is provided with an anti-corrosion mechanism, and both ends of the connecting portion are provided with connecting mechanisms;

[0007] The anti-corrosion mechanism includes a base layer, the outer wall of the base layer is fixedly connected to the inner wall of the connecting part, the inner wall of the base layer is provided with an adhesive layer 1, the inner wall of the adhesive layer 1 is provided with an anti-corrosion layer 1, the outer wall of the base layer is bonded with an adhesive layer 2, the outer wall of the adhesive layer 2 is fixedly connected to the anti-corrosion layer 2, and the outer wall of the anti-corrosion layer 2 is fixedly connected to a protective layer.

[0008] Preferably, the outer wall of the anti-corrosion mechanism is wrapped and connected to the outer wall of the connecting part, and one end of the connecting mechanism is detachably connected to both ends of the connecting part.

[0009] Preferably, the inner wall of the base layer is bonded to the outer wall of the adhesive layer one, and the inner wall of the adhesive layer one is fixedly connected to the outer wall of the anti-corrosion layer one.

[0010] Preferably, the inner wall of the base layer is wrapped around the outer wall of the connecting portion.

[0011] Preferably, the connecting mechanism includes an annular groove, the outer wall of the annular groove is embedded and connected with the inner wall of the connecting part, the lower end of the annular groove is provided with a groove, the inner wall of the groove is provided with a protrusion, the upper end of the protrusion is fixedly connected with an insertion rod, the side where the two insertion rods are close to each other is fixedly connected with a connecting rod, and the upper end of the insertion rod is fixedly connected with a cylinder.

[0012] Preferably, the lower end of the annular groove is fixedly connected to the upper end of the groove, and the inner cavity top wall of the groove is snap-fittedly connected to the upper end of the protrusion.

[0013] Preferably, the number of the grooves and the number of the protrusions are both four.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The anti-corrosion mechanism can effectively extend the service life of the casing and reduce the maintenance cost caused by corrosion. The inner wall of the anti-corrosion mechanism is connected with the outer wall of the connection part by coating, which ensures the sealing of the connection part, thereby avoiding the invasion of corrosive media. In addition, the inner wall of the base layer is bonded with the outer wall of the adhesive layer 1, and the inner wall of the adhesive layer 1 is fixedly connected with the outer wall of the anti-corrosion layer 1. This structure not only enhances the overall stability of the anti-corrosion casing, but also further improves the anti-corrosion effect through multi-layer protection;

[0016] 2. The connection mechanism set up can make the equipment able to be operated conveniently and quickly when maintenance or replacement of parts is needed, which greatly improves the maintenance efficiency. The outer wall of the annular groove is embedded in the inner wall of the connecting part. This embedding makes the connection more firm and not easy to loosen. A groove is set at the lower end of the annular groove, and a protrusion is set on the inner wall of the groove. The upper end of the protrusion is fixedly connected with a plug rod, and the side where the two plug rods are close to each other is fixedly connected with a connecting rod, and the upper end of the plug rod is fixedly connected with a cylinder. This structure not only increases the strength of the connection mechanism, but also ensures the reliability of the connection through the snap-fit ​​connection between the protrusion and the groove. The snap-fit ​​connection between the groove and the protrusion can make the connection mechanism remain stable when subjected to external force and not easy to displace. The number of grooves and protrusions is set in four groups. This multi-point fixing method further enhances the stability of the connection mechanism and ensures the reliability of the entire corrosion-resistant casing in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the anti-corrosion mechanism of the utility model;

[0019] Figure 3 It is a schematic diagram of the connection mechanism of the utility model;

[0020] Figure 4 It is a side exploded schematic diagram of the three-dimensional structure of the utility model.

[0021] In the figure: 1, connecting part; 2, anti-corrosion mechanism; 3, connecting mechanism; 21, base layer; 22, adhesive layer 1; 23, anti-corrosion layer 1; 24, adhesive layer 2; 25, anti-corrosion layer 2; 26, protective layer; 31, annular groove; 32, groove; 33, bump; 34, plug rod; 35, connecting rod; 36, cylinder. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 and Figure 4 The utility model provides a technical solution: an anti-corrosion casing, comprising a connecting part 1, an anti-corrosion mechanism 2 is arranged on the outer wall of the connecting part 1, connecting mechanisms 3 are arranged at both ends of the connecting part 1, the anti-corrosion mechanism 2 comprises a base layer 21, the outer wall of the base layer 21 is fixedly connected to the inner wall of the connecting part 1, an adhesive layer 1 22 is arranged on the inner wall of the base layer 21, an anti-corrosion layer 1 23 is arranged on the inner wall of the adhesive layer 1 22, an adhesive layer 2 24 is bonded to the outer wall of the base layer 21, an anti-corrosion layer 2 25 is fixedly connected to the outer wall of the adhesive layer 24, a protective layer 26 is fixedly connected to the outer wall of the anti-corrosion layer 25, the outer wall of the anti-corrosion mechanism 2 is wrapped and connected to the outer wall of the connecting part 1, and one end of the connecting mechanism 3 is detachably connected to the two ends of the connecting part 1;

[0024] The base layer 21 is the foundation of the entire anti-corrosion mechanism 2, on which an adhesive layer 22, an anti-corrosion layer 23, an adhesive layer 24 and an anti-corrosion layer 25 are arranged in sequence. The arrangement of these layers ensures the stability and durability of the anti-corrosion mechanism 2 in a harsh environment. The protective layer 26 is located at the outermost layer to provide additional protection against external physical damage and chemical erosion. The inner wall of the base layer 21 is coated with an adhesive layer 22, and the adhesive layer 22 is coated with an anti-corrosion layer 23. The anti-corrosion layer The adhesive layer 24 is coated on the outside of the adhesive layer 24, the anti-corrosion layer 25 is coated on the outside of the anti-corrosion layer 25, and the protective layer 26 is fixed to the outside of the anti-corrosion layer 25. The anti-corrosion layer 23 is a rubber anti-corrosion coating layer, and the anti-corrosion layer 25 is a fiberglass layer. The anti-corrosion layer 23 and the anti-corrosion layer 25 have good sulfur corrosion resistance, which improves the sulfur corrosion resistance. The protective layer 26 has mechanical strength and wear resistance, and has strong anti-sliding friction ability, thereby improving the overall sulfur corrosion resistance and wear resistance of the device.

[0025] See also Figure 2 In order to quickly resist corrosion of the cylinder 36 on the connection part 1, the inner wall of the base layer 21 is bonded to the outer wall of the adhesive layer 22, the inner wall of the adhesive layer 22 is fixedly connected to the outer wall of the anti-corrosion layer 23, and the inner wall of the base layer 21 is wrapped around the outer wall of the connection part 1;

[0026] Among them, the annular groove 31, the groove 32, the protrusion 33, the insertion rod 34 and the connecting rod 35 work together to achieve a reliable connection between the connecting part 1 and the cylinder 36. The coordinated use of the annular groove 31 and the groove 32 makes the connecting mechanism 3 have higher stability when subjected to tension or pressure. The coordination of the protrusion 33 and the insertion rod 34 further enhances the firmness of the connection. The connecting rod 35 and the cylinder 36 provide the necessary strength and rigidity for the entire connecting mechanism 3. In practical applications, it can effectively protect the equipment from corrosion and extend the service life of the equipment. It is not only suitable for highly corrosive environments such as petroleum and chemical industries, but also for marine engineering, shipbuilding and other occasions that require long-term exposure to harsh environments. In addition, due to the detachable setting of the connecting mechanism 3, maintenance and replacement become simple and convenient, greatly reducing maintenance costs and time.

[0027] See also Figure 3 In order to quickly fix the cylinder 36 on the connecting part 1, the connecting mechanism 3 includes an annular groove 31, the outer wall of the annular groove 31 is embedded and connected with the inner wall of the connecting part 1, the lower end of the annular groove 31 is provided with a groove 32, the inner wall of the groove 32 is provided with a protrusion 33, the upper end of the protrusion 33 is fixedly connected with a plug rod 34, the side where the two plug rods 34 are close to each other is fixedly connected with a connecting rod 35, the upper end of the plug rod 34 is fixedly connected with a cylinder 36, the lower end of the annular groove 31 is fixedly connected with the upper end of the groove 32, the inner cavity top wall of the groove 32 is snap-connected with the upper end of the protrusion 33, and the number of the groove 32 and the protrusion 33 is set in four groups;

[0028] In order to ensure that the connection between the cylinder 36 and the connecting part 1 is more secure, the upper end of the plug rod 34 is in close contact with the inner wall of the annular groove 31, so that the cylinder 36 can be easily inserted or pulled out. In addition, a sealing ring is provided between the outer wall of the cylinder 36 and the inner wall of the connecting part 1 to ensure the sealing performance of the connecting part 1 and prevent the intrusion of corrosive media. In practical applications, in order to facilitate installation and maintenance, the annular groove 31 is opened at both ends of the connecting part 1, and the inner wall of the annular groove 31 is embedded and connected with the outer wall of the groove 32, so that the plug rod 34 in the annular groove 31 can be easily installed or removed. At the same time, the lower end of the annular groove 31 and the upper end of the groove 32 are embedded as an integral structure. To ensure the strength and durability of the connection part 1, in the selection of anti-corrosion layer 1 23 and anti-corrosion layer 2 25, high temperature resistant and corrosion resistant materials, such as polytetrafluoroethylene (PTFE) or epoxy resin, are used to meet the anti-corrosion requirements under different working conditions. In addition, in order to further improve the anti-corrosion effect, the surface of anti-corrosion layer 25 can be coated with a special protective coating, such as polyurethane coating or ceramic coating, to enhance its wear resistance and impact resistance. It has the characteristics of simple structure, easy installation, good anti-corrosion effect, etc., and can be widely used in pipeline connection parts 1 in petroleum, chemical, metallurgy and other industries, effectively extending the service life of the equipment and reducing maintenance costs.

[0029] Working principle: First, the base layer 21 is used as the foundation of the entire anti-corrosion mechanism 2, on which are arranged adhesive layer 1 22 and anti-corrosion layer 1 23, as well as adhesive layer 24 and anti-corrosion layer 25 in sequence. The arrangement of these layers ensures the stability and durability of the anti-corrosion mechanism 2 in harsh environments. The protective layer 26 is located on the outermost layer to provide additional protection against external physical damage and chemical erosion. The inner wall of the base layer 21 is coated with adhesive layer 1 22, and the adhesive layer 1 22 is coated with anti-corrosion layer 1 23, and the anti-corrosion layer 1 23 is coated with adhesive layer 24, and the adhesive layer 24 is coated with anti-corrosion layer 25. The anti-corrosion layer 25 is fixedly connected with a protective layer 26. The anti-corrosion layer 1 23 is a rubber anti-corrosion coating layer, and the anti-corrosion layer 25 is a fiberglass layer. The anti-corrosion layer 1 23 and the anti-corrosion layer 2 25 have good sulfur corrosion resistance, which improves the sulfur corrosion resistance. The protective layer 26 has mechanical strength and wear resistance, and can resist sliding friction. The strength is strong, so as to improve the overall anti-sulfur corrosion and anti-wear performance of the device. Among them, the annular groove 31, the groove 32, the protrusion 33, the plug rod 34 and the connecting rod 35 work together to realize the reliable connection between the connecting part 1 and the cylinder 36. The coordinated use of the annular groove 31 and the groove 32 makes the connecting mechanism 3 have higher stability when subjected to tension or pressure. The coordination of the protrusion 33 and the plug rod 34 further enhances the firmness of the connection. The connecting rod 35 and the cylinder 36 provide the necessary strength and rigidity for the entire connecting mechanism 3. In practical applications, it can effectively protect the equipment from corrosion and extend the service life of the equipment. It is not only suitable for highly corrosive environments such as petroleum and chemical industries, but also suitable for occasions such as marine engineering and shipbuilding that need to be exposed to harsh environments for a long time. In addition, due to the detachable setting of the connecting mechanism 3, maintenance and replacement become simple and convenient, greatly reducing the maintenance cost and time;

[0030] Then, in order to ensure that the connection between the cylinder 36 and the connecting part 1 is more secure, the upper end of the plug rod 34 is in close contact with the inner wall of the annular groove 31, so that the cylinder 36 can be easily inserted or pulled out. In addition, a sealing ring is provided between the outer wall of the cylinder 36 and the inner wall of the connecting part 1 to ensure the sealing performance of the connecting part 1 and prevent the invasion of corrosive media. In practical applications, in order to facilitate installation and maintenance, the annular groove 31 is opened at both ends of the connecting part 1, and the inner wall of the annular groove 31 is embedded and connected with the outer wall of the groove 32, so that the plug rod 34 in the annular groove 31 can be easily installed or removed. At the same time, the lower end of the annular groove 31 and the upper end of the groove 32 are embedded in an integrated structure to ensure the strength and durability of the connecting part 1. In the selection of the first 23 and the anti-corrosion layer 25, high temperature resistant and corrosion resistant materials, such as polytetrafluoroethylene (PTFE) or epoxy resin, are used to meet the anti-corrosion requirements under different working conditions. In addition, in order to further improve the anti-corrosion effect, the surface of the anti-corrosion layer 25 can be coated with a special protective coating, such as a polyurethane coating or a ceramic coating, to enhance its wear resistance and impact resistance. It has the characteristics of simple structure, easy installation, good anti-corrosion effect, etc., and can be widely used in pipeline connection parts 1 in the petroleum, chemical, metallurgical and other industries, effectively extending the service life of the equipment and reducing maintenance costs. The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant casing, comprising a connecting portion (1), characterized in that: The outer wall of the connecting portion (1) is provided with an anti-corrosion mechanism (2), and both ends of the connecting portion (1) are provided with connecting mechanisms (3); The anti-corrosion mechanism (2) comprises a base layer (21), the outer wall of the base layer (21) is fixedly connected to the inner wall of the connecting portion (1), the inner wall of the base layer (21) is provided with an adhesive layer 1 (22), the inner wall of the adhesive layer 1 (22) is provided with an anti-corrosion layer 1 (23), the outer wall of the base layer (21) is bonded with an adhesive layer 2 (24), the outer wall of the adhesive layer 2 (24) is fixedly connected to an anti-corrosion layer 2 (25), and the outer wall of the anti-corrosion layer 2 (25) is fixedly connected to a protective layer (26).

2. The corrosion-resistant casing according to claim 1, characterized in that: The outer wall of the anti-corrosion mechanism (2) is wrapped and connected to the outer wall of the connecting part (1), and one end of the connecting mechanism (3) is detachably connected to both ends of the connecting part (1).

3. The corrosion-resistant casing according to claim 1, characterized in that: The inner wall of the base layer (21) is bonded to the outer wall of the adhesive layer 1 (22), and the inner wall of the adhesive layer 1 (22) is fixedly connected to the outer wall of the anti-corrosion layer 1 (23).

4. The corrosion-resistant casing according to claim 3, characterized in that: The inner wall of the base layer (21) is wrapped around the outer wall of the connecting portion (1).

5. The corrosion-resistant casing according to claim 1, characterized in that: The connecting mechanism (3) comprises an annular groove (31), the outer wall of the annular groove (31) being embedded and connected with the inner wall of the connecting portion (1), the lower end of the annular groove (31) being provided with a groove (32), the inner wall of the groove (32) being provided with a protrusion (33), the upper end of the protrusion (33) being fixedly connected with an insertion rod (34), the side of the two insertion rods (34) close to each other being fixedly connected with a connecting rod (35), and the upper end of the insertion rod (34) being fixedly connected with a cylinder (36).

6. The corrosion-resistant casing according to claim 5, characterized in that: The lower end of the annular groove (31) is fixedly connected to the upper end of the groove (32), and the inner cavity top wall of the groove (32) is snap-fitted to the upper end of the protrusion (33).

7. The corrosion-resistant casing according to claim 5, characterized in that: The number of the grooves (32) and the number of the protrusions (33) are both four.

Images