Outer sleeve steel pipe of high-rigidity thin-wall directly-buried steam thermal insulation pipe

Abstract

The embodiment of the invention provides an outer sleeve steel pipe of a high-rigidity thin-wall directly-buried steam thermal insulation pipe, and relates to the technical field of thermal insulation pipes. An outer sleeve steel pipe of a high-rigidity thin-wall directly-buried steam heat preservation pipe comprises a steel pipe body, an adjustable anti-deformation mechanism is installed on the steel pipe body, the adjustable anti-deformation mechanism comprises I-shaped steel, the I-shaped steel is bent into a circle and hooped outside the steel pipe body to form a closed circular ring, and the anti-deformation capacity of the steel pipe body is improved. The I-shaped steel is bent into a circle and then hooped outside the steel pipe body to form a closed circular ring, and a plurality of I-shaped steel rings are uniformly distributed at certain intervals according to requirements, so that the steel pipe body with a relatively thin wall can also have the capability of resisting elliptical deformation of a conventional sleeve with a relatively thick pipe wall, steel can be obviously saved, and huge economic benefits are generated.

Description

Technical Field

[0001] The present application relates to the technical field of thermal insulation pipes, and in particular to an outer jacket steel pipe of a high-rigidity thin-wall direct-buried steam thermal insulation pipe. Background Art

[0002] Prefabricated direct-buried steam insulated pipes are widely used in urban heating systems for efficient transmission of high-temperature steam. Configuring a steel outer casing has become a classic method for prefabricated direct-buried steam insulated pipes. The outer casing steel pipe of the direct-buried steam insulated pipe is used to protect the insulation material outside the steam pipe to prevent it from being soaked in groundwater, providing a stable and reliable space for the insulation material to avoid soil extrusion.

[0003] The deeper the insulation pipe is buried underground, the greater the compression intensity of the soil outside the casing on the steel casing. In addition to the pressure of the soil layer on the top of the casing, if there are vehicles passing on the ground, the dynamic load caused by the vehicles also poses a threat to the stability of the steel casing. For this reason, the steel outer casing of the underground steam insulation pipe must have sufficient rigidity to resist the force from the top of the pipe, maintain its original shape, and avoid "instability".

[0004] For ordinary circular cross-section steel pipes, the only parameter that ensures that they do not lose stability is the wall thickness of the steel pipe. The larger the diameter of the steel casing, the thicker the pipe wall is to maintain a stable shape. Among the material costs of the current direct-buried steam pipeline, the cost of the outer jacket steel pipe accounts for the largest share. Although this method is simple and direct, its economic disadvantages become increasingly obvious as the size of the pipeline increases. Therefore, it is urgent to explore new technologies and methods to achieve a balance between cost and performance. Summary of the invention

[0005] The present application aims to at least solve the technical problem of high cost caused by increasing the deformation resistance of the pipe wall thickness in the prior art. To this end, the present application proposes a jacket steel pipe of a high-rigidity thin-walled direct-buried steam insulation pipe.

[0006] According to the embodiment of the present application, the outer jacket steel pipe of the high-rigidity thin-walled direct-buried steam insulation pipe includes a steel pipe body, on which an adjustable anti-deformation mechanism is installed. The adjustable anti-deformation mechanism includes an I-beam, which is bent into a circle and clamped on the outside of the steel pipe body to form a closed circular ring, thereby improving the steel pipe body's anti-deformation ability.

[0007] According to some embodiments of the present application, a plurality of I-beams are arranged evenly distributed on the outside of the steel pipe body.

[0008] According to some embodiments of the present application, the I-beam is fixed to the outside of the steel pipe body by welding.

[0009] According to some embodiments of the present application, the surface of the I-beam is subjected to anti-corrosion treatment and coated with an anti-corrosion coating.

[0010] The beneficial effect of the present application is that the I-beam is bent into a circle and then clamped on the outside of the steel pipe body to form a closed circular ring, and a number of I-beam rings are arranged (evenly distributed) at certain intervals as needed. In this way, a steel pipe body with a thinner wall can also have the ability to resist elliptical deformation of a conventional casing with a thicker wall, which can significantly save steel and generate huge economic benefits.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is an outer jacket steel pipe of a high-rigidity thin-walled direct-buried steam insulation pipe according to an embodiment of the present application.

[0014] A three-dimensional schematic diagram of the overall structure;

[0015] Figure 2 is a schematic cross-sectional plan view of an I-beam structure according to an embodiment of the present application;

[0016] Figure 3 It is a schematic diagram of an I-beam structure according to an embodiment of the present application.

[0017] Figure numerals: 1. Steel pipe body; 2. I-beam. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0019] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] The outer jacket steel pipe of the high-rigidity thin-walled direct-buried steam insulation pipe according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0027] like Figure 1-Figure 3 It is shown that the outer jacket steel pipe of the high-rigidity thin-walled direct-buried steam insulation pipe according to the embodiment of the present application includes a steel pipe body 1, on which an adjustable anti-deformation mechanism is installed. The adjustable anti-deformation mechanism includes an I-beam 2, which is bent into a circle and clamped on the outside of the steel pipe body 1 to form a closed circular ring. The I-beam 2 can be fixed to the outside of the steel pipe body 1 by welding, bolting or bonding. In this way, when a thinner-walled steel pipe body 1 is used, it can also have the ability to resist elliptical deformation of a conventional casing with a thicker pipe wall. At the same time, it can significantly save steel and generate huge economic benefits.

[0028] There are several I-beams 2 evenly distributed on the outside of the steel pipe body 1, and the size and quantity of the I-beams 2 are optimized according to the diameter of the steel pipe body 1 and the expected load to achieve the best stiffness enhancement effect.

[0029] The surface of the I-beam 2 is treated with an anti-corrosion coating to improve its corrosion resistance and extend its service life.

[0030] It is worth mentioning that various structural steels are widely used in engineering, such as I-beams 2, channel steels, angle steels, etc. These structural steels have a much higher deformation resistance than conventional steel plates due to their special shapes. For example, the moment of inertia of No. 14 I-beam 2 about the central axis is equal to 5.95*10-6m4. The moment of inertia of a steel plate of the same material as No. 14 I-beam 2 with the same length, width and weight is only 5.2*10-8m4. The ratio of the moments of inertia of the two is 113.8 to 1. The product of the elastic modulus E of the steel and the moment of inertia I of the steel component constitutes the stiffness of the component. According to the above principle, combining the I-beam 2 with the ordinary steel pipe should be able to significantly improve the deformation resistance of the steel pipe.

[0031] The present invention is implemented as follows: Figure 1 and Figure 2As shown, the I-beam 2 is bent into a circle and then clamped on the outside of the steel pipe body 1 to form a closed circular ring. According to needs, a number of I-beam rings are arranged (uniformly distributed) at certain intervals. In this way, a thinner-walled steel pipe body 1 can also have the ability to resist elliptical deformation of a conventional casing with a thicker wall.

[0032] The present invention can also use channel steel, angle steel, ring plate, ring pipe and round steel to enhance the rigidity of the steel casing of the steel pipe body 1.

[0033] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0034] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. The outer jacket steel pipe of the high-rigidity thin-walled direct-buried steam insulation pipe is characterized by: The invention comprises a steel pipe body (1), on which an adjustable anti-deformation mechanism is installed. The adjustable anti-deformation mechanism comprises an I-beam (2). The I-beam (2) is bent into a circle and clamped outside the steel pipe body (1) to form a closed circular ring, thereby improving the anti-deformation capability of the steel pipe body (1).

2. The outer jacket steel pipe of the high-rigidity thin-walled direct-buried steam insulation pipe according to claim 1 is characterized in that: The I-beams (2) are provided in a plurality and are evenly distributed on the outside of the steel pipe body (1).

3. The outer jacket steel pipe of the high-rigidity thin-walled direct-buried steam insulation pipe according to claim 2 is characterized in that: The I-beam (2) is fixed to the outside of the steel pipe body (1) by welding.

4. The outer jacket steel pipe of the high-rigidity thin-walled direct-buried steam insulation pipe according to claim 3 is characterized in that: The surface of the I-beam (2) is treated with an anti-corrosion treatment and coated with an anti-corrosion coating.

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