Seamless steel pipe for steam conveying of heat supply pipe network

Abstract

The utility model discloses a seamless steel pipe for conveying steam in a heat supply pipe network, which relates to the technical field of heat supply pipe networks and comprises a steel pipe body, a heat insulation pipe assembly is arranged in the steel pipe body, and a protective pipe assembly is fixedly sleeved on the outer side of the steel pipe body. The heat insulation pipe assembly is arranged in the steel pipe body, the heat insulation pipe assembly is made of heat insulation materials and has a certain heat insulation effect, meanwhile, the heat insulation cavities are formed in the heat insulation pipe body, a plurality of cavities can be formed, the heat conductivity coefficient of air in the cavities is very low, and therefore the heat insulation pipe can better insulate the temperature, and the heat insulation effect is good. Heat loss of steam transmitted in the steel pipe body is reduced, and transmission efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal pipe networks, in particular to a seamless steel pipe for transporting steam in thermal pipe networks. Background Art

[0002] A heating network, also known as a heat pipe, is a network of heating pipes that connects heat sources to building heat inlets, such as boiler rooms, direct-fired power plant rooms, and heating centers. Multiple heating pipes form a network. The following heating networks are designed for hot water with a design pressure of 2.5 MPa or less and a temperature of 200°C or less; and for steam with a design pressure of 1.6 MPa or less and a temperature of 350°C or less.

[0003] However, the existing seamless steel pipes for transporting steam in thermal pipelines have poor thermal insulation effect, resulting in large energy losses during transportation. At the same time, the existing seamless steel pipes for transporting steam in thermal pipelines have no external protection during use and are prone to wear and even damage, which affects their service life.

[0004] Therefore, it is necessary to invent a seamless steel pipe for transporting steam in a thermal network to solve the above problems. Summary of the Invention

[0005] The purpose of the utility model is to provide a seamless steel pipe for transporting steam in a thermal network, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a seamless steel pipe for transporting steam in a heat pipe network, comprising a steel pipe body, an insulation pipe assembly being provided inside the steel pipe body, and a protective pipe assembly being fixedly sleeved on the outside of the steel pipe body;

[0007] The thermal insulation pipe assembly includes a thermal insulation pipe body, the outer side wall of the thermal insulation pipe body is bonded to the inner side wall of the steel pipe body;

[0008] The protection tube assembly comprises a protection tube body, and the inner side wall of the protection tube body is bonded to the outer side wall of the steel tube body.

[0009] Preferably, the inner side wall of the insulation tube body is provided with a plurality of groups of insulation cavities distributed at equal intervals, and each group includes a plurality of insulation cavities distributed in a ring array.

[0010] Preferably, the outer side wall of the protection tube body is provided with a plurality of arcuate grooves, and the plurality of arcuate grooves are distributed in a circular array.

[0011] Preferably, the arc-shaped groove is arranged in an arc shape, and an elastic strip adapted to the arc-shaped groove is fixedly arranged inside the arc-shaped groove.

[0012] Preferably, both sides of the elastic strip are inclined outwards, and the corners are rounded.

[0013] Preferably, an inner lining tube is provided inside the thermal insulation tube assembly, and the outer side wall of the inner lining tube is bonded to the inner side wall of the thermal insulation tube assembly.

[0014] The technical effects and advantages of this utility model are:

[0015] The utility model arranges a heat-insulating pipe assembly inside the steel pipe body. The heat-insulating pipe assembly is made of heat-insulating material and has a certain heat-insulating effect. At the same time, a plurality of heat-insulating cavities are opened on the heat-insulating pipe body to form a plurality of cavities. The thermal conductivity of the air in the cavity is very low, so that the temperature can be better isolated, and the heat loss of the steam transmitted inside the steel pipe body is reduced, thereby improving the transmission efficiency. In addition, the protective pipe assembly is arranged, and the protective pipe assembly is made of hard rubber, which has a wear-resistant effect. At the same time, a plurality of elastic strips and wear-resistant strips are arranged, and the elastic strips are made of elastic rubber and the wear-resistant strips are made of hard rubber. In the event of a collision, the elastic strips can play a certain buffering effect to prevent the steel pipe body from being damaged. At the same time, the wear-resistant strips and the protective pipe body improve the wear resistance of the steel pipe, thereby improving the service life of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the heat insulation board assembly structure of the present utility model.

[0018] Figure 3 This is a schematic diagram of the protective plate assembly structure of the present utility model.

[0019] In the figure: 1. Steel pipe body; 2. Insulation pipe assembly; 3. Lining pipe; 4. Protective pipe assembly; 201. Insulation pipe body; 202. Insulation cavity; 401. Protective pipe body; 402. Arc groove; 403. Elastic strip; 404. Wear-resistant strip. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The utility model provides Figure 1-3The seamless steel pipe shown is for transporting steam in a thermal network, comprising a steel pipe body 1, an insulating pipe assembly 2 being arranged inside the steel pipe body 1, a protective pipe assembly 4 being fixedly sleeved on the outside of the steel pipe body 1, an inner lining pipe 3 being arranged inside the insulating pipe assembly 2, and the outer wall of the inner lining pipe 3 being bonded to the inner wall of the insulating pipe assembly 2. The inner lining pipe 3 is made of PP material, which has high strength, is not easy to deform, and is not easily eroded by water.

[0022] Furthermore, the thermal insulation pipe assembly 2 includes a thermal insulation pipe body 201, the outer wall of the thermal insulation pipe body 201 is bonded to the inner wall of the steel pipe body 1, and the inner wall of the thermal insulation pipe body 201 is provided with multiple groups of thermal insulation cavities 202 distributed at equal intervals, and each group includes multiple thermal insulation cavities 202 distributed in a ring array. By arranging the thermal insulation pipe assembly 2 inside the steel pipe body 1, the thermal insulation pipe assembly 2 is made of thermal insulation material and has a certain thermal insulation effect. At the same time, by opening multiple thermal insulation cavities 202 on the thermal insulation pipe body 201, multiple cavities can be formed. The thermal conductivity of the air in the cavity is very low, so that the temperature can be better isolated, so that the heat loss of the steam transmitted inside the steel pipe body 1 is reduced, and the transmission efficiency is improved.

[0023] Secondly, the outer wall of the protective tube body 401 is provided with a plurality of arc grooves 402, and the plurality of arc grooves 402 are distributed in a circular array, the arc grooves 402 are arranged in an arc shape, and an elastic strip 403 adapted to the arc groove 402 is fixedly arranged inside the arc groove 402. Through the setting of the protective tube assembly 4, the protective tube assembly 4 adopts hard rubber, which itself has a wear-resistant effect. At the same time, through the setting of multiple elastic strips 403 and wear-resistant strips 404, the elastic strips 403 adopt elastic rubber and the wear-resistant strips 404 adopt hard rubber. During collision, the elastic strips 403 can play a certain buffering effect to prevent damage to the steel tube body 1. At the same time, the wear-resistant strips 404 and the protective tube body 401 improve the wear resistance of the steel tube, thereby increasing the service life of the steel tube. Both sides of the elastic strip 403 are inclined outward. The inclined setting can increase the protection area of ​​the elastic strip 403 and improve the protection effect. The corners are rounded. The rounded corner setting can improve smoothness and reduce the wear of the elastic strip 403.

[0024] Working principle of this utility model:

[0025] During use, a heat-insulating pipe assembly 2 is arranged inside the steel pipe body 1. The heat-insulating pipe assembly 2 is made of heat-insulating material and has a certain heat-insulating effect. At the same time, a plurality of heat-insulating cavities 202 are opened on the heat-insulating pipe body 201 to form a plurality of cavities. The thermal conductivity of the air in the cavity is very low, so that the temperature can be better isolated, and the heat loss of the steam transmitted inside the steel pipe body 1 is reduced, thereby improving the transmission efficiency. In addition, the protective pipe assembly 4 is provided, and the protective pipe assembly 4 is made of hard rubber, which has a wear-resistant effect. At the same time, a plurality of elastic strips 403 and wear-resistant strips 404 are provided, and the elastic strips 403 are made of elastic rubber and the wear-resistant strips 404 are made of hard rubber. In case of collision, the elastic strips 403 can play a certain buffering effect to prevent the steel pipe body 1 from being damaged. At the same time, the wear-resistant strips 404 and the protective pipe body 401 improve the wear resistance of the steel pipe, thereby improving the service life of the steel pipe.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A seamless steel pipe for transporting steam in a heat pipe network, characterized by: It comprises a steel pipe body (1), a heat insulation pipe assembly (2) is provided inside the steel pipe body (1), and a protective pipe assembly (4) is fixedly sleeved on the outside of the steel pipe body (1); The heat-insulating pipe assembly (2) comprises a heat-insulating pipe body (201), the outer side wall of the heat-insulating pipe body (201) being bonded to the inner side wall of the steel pipe body (1); The protective tube assembly (4) comprises a protective tube body (401), and the inner side wall of the protective tube body (401) is bonded to the outer side wall of the steel tube body (1); The inner side wall of the heat-insulating pipe body (201) is provided with a plurality of groups of heat-insulating cavities (202) distributed at equal intervals, and each group includes a plurality of heat-insulating cavities (202) distributed in a ring array; The outer side wall of the protective tube body (401) is provided with a plurality of arc-shaped grooves (402), and the plurality of arc-shaped grooves (402) are distributed in a ring array; The arc-shaped groove (402) is arranged in an arc shape, and an elastic strip (403) adapted to the arc-shaped groove (402) is fixedly arranged inside the arc-shaped groove (402).

2. The seamless steel pipe for transporting steam in a heat pipe network according to claim 1, characterized in that: Both sides of the elastic strip (403) are arranged to be inclined outwards, and the corners are arranged to be rounded.

3. The seamless steel pipe for transporting steam in a heat pipe network according to claim 2, characterized in that: An inner lining tube (3) is provided inside the thermal insulation tube assembly (2), and the outer side wall of the inner lining tube (3) is bonded to the inner side wall of the thermal insulation tube assembly (2).

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