Anti-corrosion structure at joint of steam pipeline

Abstract

The utility model discloses an anti-corrosion structure at a steam pipeline joint, which comprises a first anti-corrosion sleeve located between a first steam pipeline and a second steam pipeline, a second anti-corrosion sleeve is arranged on the outer side of the first anti-corrosion sleeve, the first anti-corrosion sleeve comprises an inner wall sleeve, and the inner wall sleeve is attached to the inner wall of the first steam pipeline and the inner wall of the second steam pipeline. A middle ring is integrally formed on the outer wall of the inner wall sleeve and located between the first steam pipeline and the second steam pipeline, a plurality of through holes are formed in the middle ring, and the second anti-corrosion sleeve comprises an outer wall sleeve. The first anti-corrosion sleeve and the second anti-corrosion sleeve form an inner and outer sleeve structure, the first anti-corrosion sleeve has the anti-corrosion effect on the inner walls of the first steam pipeline and the second steam pipeline, and the second anti-corrosion sleeve has the anti-corrosion effect on the outer walls of the first steam pipeline and the second steam pipeline and has the protection effect on the first anti-corrosion sleeve, so that the anti-corrosion capacity can be enhanced; and the first anti-corrosion sleeve is prevented from being damaged from the outside.

Description

Technical Field

[0001] The utility model relates to the field of anti-corrosion structure equipment at a steam pipeline interface, in particular to an anti-corrosion structure at a steam pipeline interface. Background Art

[0002] The direct burial technology of steam pipelines has a history of nearly 30 years in my country; the basic structural form of the direct buried steam insulation pipe is to install a steel outer casing outside the insulation layer of the steam steel pipe; the outer surface of the outer casing is treated with anti-corrosion after rust removal; the outer casing is directly covered with soil; the anti-corrosion of the outer casing is all completed in the factory; no matter which anti-corrosion method or anti-corrosion material is used, as the main body of the outer casing, the anti-corrosion is reliable; there are many types of insulation materials used for steam insulation pipes, and glass wool felt is a widely used insulation material, called soft insulation material.

[0003] The patent document with the Chinese patent announcement number CN209977501U has an authorization announcement date of January 21, 2020. It discloses a chemical anti-corrosion pipeline with good sealing performance at the interface. The application includes a first anti-corrosion pipe and a second anti-corrosion pipe. The first anti-corrosion pipe is provided with a first flange, the second anti-corrosion pipe is provided with a second flange, the first flange and the second flange are provided with through holes, a connector is provided between the first flange and the second flange, wear-resistant rings are fixedly bonded on both sides of the connector, the first flange and the second flange are elastically connected to the wear-resistant rings on the opposite sides, and the inner and outer sides of the connector are provided with an inner and outer interlocking ring, and a sealing anti-corrosion pad is fixedly bonded to the outer side of the inner and outer rings, and a latch is provided in the through hole, and one end of the latch is screwed with a nut. The beneficial effect is: the first flange and the second flange are embedded in the inner and outer interlocking rings, and a sealing anti-corrosion pad is provided on the outer side of the inner interlocking ring to fit the inner side wall of the first and second anti-corrosion pipes, so as to improve the sealing performance at the interface of the chemical anti-corrosion pipeline.

[0004] It can be seen from the above application that the existing anti-corrosion structure at the pipe interface has poor durability, weak protection ability at the connection, short service life and poor flame retardant performance. Therefore, an anti-corrosion structure at the steam pipe interface is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide an anti-corrosion structure at the interface of a steam pipe. By arranging a first anti-corrosion sleeve and a second anti-corrosion sleeve, an inner and outer sleeve structure is formed. The first anti-corrosion sleeve has an anti-corrosion effect on the inner walls of the first steam pipe and the second steam pipe, and the second anti-corrosion sleeve mainly has an anti-corrosion effect on the outer walls of the first steam pipe and the second steam pipe, and also has a protective effect on the first anti-corrosion sleeve, which can enhance the anti-corrosion ability and prevent the first anti-corrosion sleeve from being damaged from the outside.

[0006] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model is: an anti-corrosion structure at the interface of a steam pipe, comprising: a first anti-corrosion sleeve arranged between a first steam pipe and a second steam pipe, the first steam pipe and the second steam pipe are connected by bolts, a second anti-corrosion sleeve is arranged on the outer side of the first anti-corrosion sleeve, the first anti-corrosion sleeve comprises an inner wall sleeve, the inner wall sleeve is attached to the inner walls of the first steam pipe and the second steam pipe, an intermediate ring is integrally formed on the outer wall of the inner wall sleeve, the intermediate ring is between the first steam pipe and the second steam pipe, a plurality of through holes are opened on the intermediate ring, the bolts pass through the through holes, and the second anti-corrosion sleeve comprises an outer wall sleeve, and the outer wall sleeve is arranged on the outer side of the intermediate ring.

[0007] As a preferred solution of the utility model, an anti-overflow ring is integrally formed on the outer wall of the intermediate ring, and the outer wall sleeve is wrapped around the outer wall of the anti-overflow ring.

[0008] As a further preferred embodiment of the present invention, the anti-overflow ring and the outer wall sleeve are bonded together by a first adhesive layer.

[0009] As a preferred embodiment of the present invention, a magnesium hydroxide flame retardant layer is provided on the surface of the outer wall sleeve.

[0010] As a further preferred embodiment of the present invention, both ends of the outer wall sleeve are wrapped around the surfaces of the first steam pipe and the second steam pipe, and the outer wall sleeve and the surfaces of the first steam pipe and the second steam pipe are bonded by a second adhesive layer.

[0011] As a further solution of the utility model, stainless steel quick clamps are provided on the outer walls at both ends of the outer wall sleeve.

[0012] As a preferred solution of the utility model, an anti-corrosion paint layer is filled between the bolt and the outer wall sleeve.

[0013] As a further preferred embodiment of the present invention, both the first adhesive layer and the second adhesive layer are high temperature resistant adhesive layers.

[0014] Compared with the prior art, the anti-corrosion structure at the steam pipe interface of the utility model has the following beneficial effects:

[0015] The utility model forms an inner and outer shell structure by arranging a first anti-corrosion sleeve and a second anti-corrosion sleeve. The first anti-corrosion sleeve has an anti-corrosion effect on the inner walls of the first steam pipe and the second steam pipe, and the second anti-corrosion sleeve mainly has an anti-corrosion effect on the outer walls of the first steam pipe and the second steam pipe, and also has a protective effect on the first anti-corrosion sleeve, thereby enhancing the anti-corrosion ability and preventing the first anti-corrosion sleeve from being damaged from the outside. By arranging a magnesium hydroxide flame retardant layer and a high-temperature resistant adhesive layer, the flame retardant performance and high-temperature resistant performance can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only examples of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of the inner and outer anti-corrosion sleeves in the embodiment of the utility model;

[0020] Figure 4 It is a schematic structural diagram of the first anti-corrosion sleeve in an embodiment of the utility model.

[0021] Figure numerals: 10, first steam pipe; 11, second steam pipe; 20, bolt; 21, anti-corrosion paint layer; 30, first anti-corrosion sleeve; 31, inner wall sleeve; 32, intermediate ring; 321, through hole; 33, anti-overflow ring; 34, first adhesive layer; 40, second anti-corrosion sleeve; 41, outer wall sleeve; 42, magnesium hydroxide flame retardant layer; 43, second adhesive layer; 50, stainless steel quick clamp. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the embodiments of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-4 As shown, an embodiment of the utility model is a corrosion-resistant structure at a steam pipe interface, comprising a first corrosion-resistant sleeve 30 arranged between a first steam pipe 10 and a second steam pipe 11, the first steam pipe 10 and the second steam pipe 11 are connected by bolts 20, and a second corrosion-resistant sleeve 40 is arranged on the outer side of the first corrosion-resistant sleeve 30.

[0026] The first anti-corrosion sleeve 30 includes an inner wall sleeve 31, which is attached to the inner walls of the first steam pipe 10 and the second steam pipe 11. The outer wall of the inner wall sleeve 31 is integrally formed with an intermediate ring 32, and the intermediate ring 32 is between the first steam pipe 10 and the second steam pipe 11. The intermediate ring 32 is provided with a plurality of through holes 321, and the bolts 20 pass through the through holes 321. The outer wall of the intermediate ring 32 is integrally formed with an anti-overflow ring 33, and the outer wall sleeve 41 is wrapped around the outer wall of the anti-overflow ring 33.

[0027] The second anti-corrosion sleeve 40 includes an outer wall sleeve 41. The first anti-corrosion sleeve 30 and the outer wall sleeve 41 are both made of epoxy fiberglass materials. The outer wall sleeve 41 is sleeved on the outside of the middle ring 32. The anti-overflow ring 33 and the outer wall sleeve 41 are bonded by a first adhesive layer 34. The surface of the outer wall sleeve 41 is provided with a magnesium hydroxide flame retardant layer 42.

[0028] Both ends of the outer wall sleeve 41 are wrapped around the surface of the first steam pipe 10 and the second steam pipe 11. The outer wall sleeve 41 and the surface of the first steam pipe 10 and the surface of the second steam pipe 11 are bonded by a second adhesive layer 43, and the first adhesive layer 34 and the second adhesive layer 43 are both high temperature resistant adhesive layers. The outer walls of both ends of the outer wall sleeve 41 are provided with stainless steel quick clamps 50, and the bolt 20 and the outer wall sleeve 41 are filled with an anti-corrosion paint layer 21.

[0029] During installation, the first anti-corrosion cover 30 is first clamped between the first steam pipe 10 and the second steam pipe 11, and then the second anti-corrosion cover 40 is bonded to the first anti-corrosion cover 30, the first steam pipe 10 and the second steam pipe 11 through a high-temperature resistant adhesive layer to protect the first anti-corrosion cover 30 and enhance the anti-corrosion ability.

[0030] In the embodiment of the utility model, the first anti-corrosion sleeve 30 and the second anti-corrosion sleeve 40 form an inner and outer sleeve structure. The first anti-corrosion sleeve 30 has an anti-corrosion effect on the inner walls of the first steam pipe 10 and the second steam pipe 11, and the second anti-corrosion sleeve 40 mainly has an anti-corrosion effect on the outer walls of the first steam pipe 10 and the second steam pipe 11, and also has a protective effect on the first anti-corrosion sleeve 30, which can enhance the anti-corrosion ability and prevent the first anti-corrosion sleeve 30 from being damaged from the outside; the magnesium hydroxide flame retardant layer 42 and the high temperature resistant adhesive layer can improve the flame retardant performance and high temperature resistance.

[0031] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A steam pipe interface anti-corrosion structure, characterized in that: The invention comprises a first anti-corrosion sleeve (30) located between a first steam pipe (10) and a second steam pipe (11), wherein the first steam pipe (10) and the second steam pipe (11) are connected by bolts (20), a second anti-corrosion sleeve (40) is arranged on the outer side of the first anti-corrosion sleeve (30), the first anti-corrosion sleeve (30) comprises an inner wall sleeve (31), the inner wall sleeve (31) is fitted on the inner walls of the first steam pipe (10) and the second steam pipe (11), an intermediate ring (32) is integrally formed on the outer wall of the inner wall sleeve (31), the intermediate ring (32) is located between the first steam pipe (10) and the second steam pipe (11), a plurality of through holes (321) are formed on the intermediate ring (32), the bolts (20) pass through the through holes (321), and the second anti-corrosion sleeve (40) comprises an outer wall sleeve (41), the outer wall sleeve (41) is sleeved on the outer side of the intermediate ring (32).

2. The anti-corrosion structure at the steam pipe interface according to claim 1, characterized in that: An anti-overflow ring (33) is integrally formed on the outer wall of the intermediate ring (32), and the outer wall sleeve (41) wraps around the outer wall of the anti-overflow ring (33).

3. The anti-corrosion structure at the steam pipe interface according to claim 2, characterized in that: The anti-overflow ring (33) and the outer wall sleeve (41) are bonded together via a first adhesive layer (34).

4. The anti-corrosion structure at the steam pipe interface according to claim 3, characterized in that: A magnesium hydroxide flame retardant layer (42) is provided on the surface of the outer wall sleeve (41).

5. The anti-corrosion structure at the steam pipe interface according to claim 4, characterized in that: Both ends of the outer wall sleeve (41) are wrapped around the surfaces of the first steam pipe (10) and the second steam pipe (11), and the outer wall sleeve (41) and the surface of the first steam pipe (10) and the surface of the second steam pipe (11) are bonded together via a second adhesive layer (43).

6. The anti-corrosion structure at the steam pipe interface according to claim 5, characterized in that: The outer walls at both ends of the outer wall sleeve (41) are provided with stainless steel quick clamps (50).

7. The anti-corrosion structure at the steam pipe interface according to claim 1, characterized in that: An anti-corrosion paint layer (21) is filled between the bolt (20) and the outer wall sleeve (41).

8. The anti-corrosion structure at the steam pipe interface according to claim 5, characterized in that: The first adhesive layer (34) and the second adhesive layer (43) are both high temperature resistant adhesive layers.

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