Metal-coated bent pipe

Abstract

The utility model relates to the technical field of pipelines, in particular to a metal coated elbow which comprises a first arc-shaped coating plate, an elastic lip plate is arranged on the rear side of the first arc-shaped coating plate, and a plurality of positioning through holes distributed at equal angles are formed in the inner surface of the elastic lip plate. Through the arrangement of the epoxy resin sealant layer, the elastic lip plate, the positioning lip plate, the positioning through hole and the positioning convex block, the elbow has the advantages of no need of welding, low technical requirement and high working efficiency, and solves the problems that the external metal coating of the existing metal-coated elbow is fixed in a welding manner, time and labor are wasted, and the working efficiency is high. And compared with a welding mode for wrapping a large elbow, the requirement for the operation technology of an operator is not high, and the requirement for the operation technology of the operator is greatly improved when a welding mode is adopted for wrapping a small elbow, so that the working efficiency of the metal-wrapped elbow is low.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a metal-clad elbow. Background Art

[0002] As one of the important parts of the pipeline system, the elbow is mainly used to change the flow direction. It is widely used in pipeline transportation fields such as water conservancy, chemical industry, and petroleum. Due to its high frequency of use and the problem of accelerated wear when the slurry flows through the elbow, for example, when the slurry changes direction in the elbow, the pressure and wear on the pipe wall are relatively large, which can easily cause the elbow to rupture and leak.

[0003] At present, a patent document with publication number CN215410759U discloses a high-pressure resistant metal-clad elbow, including a plastic inner layer and a metal-clad outer layer, wherein the metal-clad outer layer is formed by covering two mutually welded cladding plates, and the metal-clad outer layer covers the plastic inner layer. By coating the metal outer layer, the pressure resistance of the elbow is more superior, and the maximum pressure that can be withstood is significantly improved compared with the existing shrimp-jointed pipe; and the manufacturing process is simple, and the welding workload is greatly reduced. And the flexible positioning enables the two workpieces to automatically align and fit the weld. And it is quick to load and unload, not affected by the high temperature after welding, and can provide good argon internal protection during welding, which greatly improves the efficiency of welding production.

[0004] However, the outer metal cladding of the above-mentioned existing metal clad elbow is fixed by welding, which is time-consuming and labor-intensive. Compared with the large elbow, the welding method for the cladding does not require high operating skills of the operator, while the welding method for the cladding of small elbows greatly increases the operating skills requirements of the operator, which leads to low working efficiency of the metal clad elbow. For this reason, we propose a metal clad elbow. Utility Model Content

[0005] The purpose of the utility model is to provide a metal-clad elbow, which has the advantages of no need for welding, low technical requirements and high work efficiency, and solves the problem that the external metal cladding of the existing metal-clad elbow is fixed by welding, which is time-consuming and labor-intensive, and has low operating technical requirements for operators compared to large-scale elbows. However, the operating technical requirements for operators for welding small-sized elbows will be greatly increased, which leads to the problem of low working efficiency of the metal-clad elbow.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a metal-clad elbow, comprising:

[0007] A first arc-shaped covering plate, wherein an elastic lip plate is disposed at the rear side of the first arc-shaped covering plate, and a plurality of positioning through holes distributed at equal angles are formed on the inner surface of the elastic lip plate;

[0008] A second arc-shaped covering plate, wherein a positioning lip plate is disposed on the front side of the second arc-shaped covering plate, and a plurality of positioning protrusions distributed at equal angles are disposed on a side of the positioning lip plate close to the elastic lip plate, and a plurality of reinforcing grooves distributed at equal angles are disposed on the inner and outer surfaces of the first arc-shaped covering plate and the second arc-shaped covering plate, and an epoxy resin sealant layer is coated inside the inner and outer grooves of the reinforcing grooves after being matched with the elastic lip plate and the positioning lip plate;

[0009] The inner layer of the substrate has a polyetheretherketone resin filling layer disposed between the outer side of the inner layer of the substrate and the first curved covering plate and the second curved covering plate.

[0010] Preferably, the sum of the thicknesses of the elastic lip plate and the positioning lip plate is smaller than the thickness of the first arc-shaped covering plate, and the thicknesses of the first arc-shaped covering plate and the second arc-shaped covering plate are consistent.

[0011] Preferably, the elastic lip plate and the positioning lip plate are both arc-shaped structures, and the inner diameter of the elastic lip plate is consistent with the outer diameter of the positioning lip plate.

[0012] Preferably, the longitudinal section of the positioning protrusion is a semicircular structure, and the positioning protrusion and the positioning through hole are matched.

[0013] Preferably, the longitudinal section of the reinforcement groove is a right triangle.

[0014] Preferably, the material of the inner layer of the substrate is plastic.

[0015] Preferably, an impact-resistant and wear-resistant layer is bonded inside the inner layer of the substrate, and the material of the impact-resistant and wear-resistant layer is polyurethane.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. The utility model arranges the first arc-shaped covering plate and the second arc-shaped covering plate close to each other, so that the elastic lip plate with an inner diameter difference is sleeved on the outside of the positioning lip plate, and after the elastic lip plate encounters the positioning protrusion, the elastic lip plate will be deformed with the assistance of continuous pressure until the positioning protrusion enters the positioning through hole of the elastic lip plate, and the elastic lip plate restores its shape. At this time, the first arc-shaped covering plate and the second arc-shaped covering plate can be positioned on the outside of the inner layer of the substrate.

[0018] 2. The utility model applies an epoxy resin sealant layer in the inner and outer grooves and the reinforcement groove after the elastic lip plate and the positioning lip plate are matched, so that the first arc-shaped cladding plate and the second arc-shaped cladding plate are completely connected together to form a whole. The epoxy resin sealant layer bonds the metal, which can improve the load, tensile strength and tensile limit of the metal to a certain extent, improve the stability and safety of the structure, and thus form a pressure-resistant protection on the outside of the inner layer of the substrate. Then, polyetheretherketone resin is filled between the inner layer of the substrate and the first arc-shaped cladding plate and the second arc-shaped cladding plate to form a polyetheretherketone resin filling layer. The production and processing process does not require welding, has low technical requirements for staff, and has high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the reinforcement groove structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the first curved cladding plate and the second curved cladding plate of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the impact-resistant and wear-resistant layer of the utility model.

[0023] In the figure: 1. first arc-shaped covering plate; 2. second arc-shaped covering plate; 3. inner layer of substrate; 4. impact-resistant and wear-resistant layer; 5. reinforcement groove; 6. epoxy resin sealant layer; 7. positioning protrusion; 8. elastic lip plate; 9. positioning through hole; 10. positioning lip plate; 11. polyetheretherketone resin filling layer. DETAILED DESCRIPTION

[0024] 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.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] It should be noted that the first curved covering plate 1, the second curved covering plate 2, the substrate inner layer 3, the impact-resistant and wear-resistant layer 4, the reinforcement groove 5, the epoxy resin sealant layer 6, the positioning protrusion 7, the elastic lip plate 8, the positioning through hole 9, the positioning lip plate 10 and the polyetheretherketone resin filling layer 11 components of the present application are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0028] Embodiment 1

[0029] See also Figure 1-Figure 4 As shown, the utility model provides a technical solution: a metal-clad elbow, comprising: a first arc-shaped cladding plate 1, a second arc-shaped cladding plate 2, and a substrate inner layer 3;

[0030] An elastic lip plate 8 is provided at the rear side of the first arc-shaped covering plate 1, and a plurality of positioning through holes 9 distributed at equal angles are provided on the inner surface of the elastic lip plate 8. A positioning lip plate 10 is provided at the front side of the second arc-shaped covering plate 2. The sum of the thickness of the elastic lip plate 8 and the positioning lip plate 10 is less than the thickness of the first arc-shaped covering plate 1, and the thickness of the first arc-shaped covering plate 1 and the second arc-shaped covering plate 2 are consistent. The elastic lip plate 8 and the positioning lip plate 10 are both arc-shaped structures, and the inner diameter of the elastic lip plate 8 is consistent with the outer diameter of the positioning lip plate 10. A plurality of equiangular through holes 9 are provided on one side of the positioning lip plate 10 close to the elastic lip plate 8. The first arc-shaped cladding plate 1 and the second arc-shaped cladding plate 2 are provided with a plurality of reinforcing grooves 5 with equal angles on their inner and outer surfaces, and the longitudinal section of the reinforcing grooves 5 is a right triangle. The inner and outer grooves of the reinforcing grooves 5 after being matched with the elastic lip plate 8 and the positioning lip plate 10 are coated with an epoxy resin sealant layer 6. The material of the inner layer 3 of the substrate is plastic, and a polyetheretherketone resin filling layer 11 is provided between the outer side of the inner layer 3 of the substrate and the first arc-shaped cladding plate 1 and the second arc-shaped cladding plate 2.

[0031] The technical solution: by setting the first arc-shaped covering plate 1 and the second arc-shaped covering plate 2, the first arc-shaped covering plate 1 and the second arc-shaped covering plate 2 are close to each other, so that the elastic lip plate 8 with an inner diameter difference is sleeved on the outside of the positioning lip plate 10, and after the elastic lip plate 8 encounters the positioning protrusion 7, with the assistance of continuous pressure, the elastic lip plate 8 will be deformed until the positioning protrusion 7 enters the positioning through hole 9 of the elastic lip plate 8, and the elastic lip plate 8 restores its shape. At this time, the first arc-shaped covering plate 1 and the second arc-shaped covering plate 2 can be positioned on the outside of the inner layer 3 of the substrate, and then, in the inner and outer grooves after the elastic lip plate 8 and the positioning lip plate 10 are matched, and the reinforcing groove 5 is coated with an epoxy resin sealant layer 6, so that the first curved cladding plate 1 and the second curved cladding plate 2 are completely connected together to form a whole. The epoxy resin sealant layer 6 is bonded to the metal, which can improve the load, tensile strength and tensile limit of the metal to a certain extent, and improve the stability and safety of the structure, so that a pressure-resistant protection can be formed on the outside of the substrate inner layer 3. Then, polyetheretherketone resin is filled between the substrate inner layer 3 and the first curved cladding plate 1 and the second curved cladding plate 2 to form a polyetheretherketone resin filling layer 11. The production and processing process does not require welding, has low technical requirements for workers, and has high work efficiency.

[0032] Embodiment 2

[0033] On the basis of embodiment 1, the present invention is as follows Figure 1 , Figure 2 and Figure 4 As shown, it is disclosed that an impact-resistant and wear-resistant layer 4 is bonded inside the inner layer 3 of the substrate, and the material of the impact-resistant and wear-resistant layer 4 is polyurethane.

[0034] The technical solution: through the setting of the impact-resistant and wear-resistant layer 4, an impact-resistant and wear-resistant protective layer can be added on the inner side of the substrate inner layer 3, wherein the polyurethane has excellent physical properties such as high strength, high elastic modulus and high wear resistance, and the polyurethane has excellent acid and alkali resistance, oil resistance, solvent resistance and other properties, and can be used under harsh working conditions, thereby improving the impact and wear resistance of the inside of the elbow, thereby extending its service life.

[0035] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0036] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A metal-clad elbow, characterized in that: include: A first arc-shaped covering plate (1), wherein an elastic lip plate (8) is provided on the rear side of the first arc-shaped covering plate (1), and a plurality of positioning through holes (9) distributed at equal angles are provided on the inner surface of the elastic lip plate (8); A second arc-shaped covering plate (2), wherein a positioning lip plate (10) is provided on the front side of the second arc-shaped covering plate (2), and a plurality of positioning protrusions (7) distributed at equal angles are provided on a side of the positioning lip plate (10) close to the elastic lip plate (8), and the inner and outer surfaces of the first arc-shaped covering plate (1) and the second arc-shaped covering plate (2) are both provided with a plurality of reinforcing grooves (5) distributed at equal angles, and the inner and outer grooves of the reinforcing grooves (5) after being matched with the elastic lip plate (8) and the positioning lip plate (10) are both coated with an epoxy resin sealant layer (6); A substrate inner layer (3), wherein a polyetheretherketone resin filling layer (11) is arranged between the outer side of the substrate inner layer (3) and the first curved cladding plate (1) and the second curved cladding plate (2).

2. The metal-clad elbow according to claim 1, characterized in that: The sum of the thicknesses of the elastic lip plate (8) and the positioning lip plate (10) is less than the thickness of the first arc-shaped covering plate (1), and the thicknesses of the first arc-shaped covering plate (1) and the second arc-shaped covering plate (2) are consistent.

3. The metal-clad elbow according to claim 1, characterized in that: The elastic lip plate (8) and the positioning lip plate (10) are both arc-shaped structures, and the inner diameter of the elastic lip plate (8) is consistent with the outer diameter of the positioning lip plate (10).

4. The metal-clad elbow according to claim 1, characterized in that: The longitudinal section of the positioning protrusion (7) is a semicircular structure, and the positioning protrusion (7) and the positioning through hole (9) are matched.

5. The metal-clad elbow according to claim 1, characterized in that: The longitudinal section of the reinforcement groove (5) is a right triangle.

6. The metal-clad elbow according to claim 1, characterized in that: The material of the substrate inner layer (3) is plastic.

7. The metal-clad elbow according to claim 1, characterized in that: An impact-resistant and wear-resistant layer (4) is bonded to the interior of the substrate inner layer (3), and the material of the impact-resistant and wear-resistant layer (4) is polyurethane.

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