High-strength corrosion-resistant high-pressure boiler alloy seamless steel pipe

Abstract

The utility model discloses a high-strength corrosion-resistant alloy seamless steel pipe for a high-pressure boiler, which relates to the technical field of seamless steel pipes and comprises a steel pipe main body, and an inner epoxy glass layer is arranged in the steel pipe main body. In order to improve the anti-collision effect of the alloy seamless steel pipe after being connected with a boiler for use, the protective sleeve can be inserted into the surface of the steel pipe firstly, so that the steel pipe is suspended, the abrasion effect of the surface of the steel pipe is reduced, and the buffer sleeve and the protective sleeve are clamped and fixed through clamping connection of a clamping rod and a fixing block; the buffer sleeve is arranged on the surface of the steel pipe in a sleeving mode at the same time, when the steel pipe is collided, the surface of the buffer sleeve is collided firstly, a connecting column placed in an oral cavity is extruded, force borne by the connecting column is buffered and released under the action of connecting grooves formed in the inner walls of a second spring and a fixing column, and the effect of preventing the surface of the steel pipe from being collided is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipes, in particular to a high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel pipe. Background Art

[0002] High-pressure boiler steel pipes are made of carbon structural steel, alloy structural steel, stainless heat-resistant steel and other materials. During use, they are often exposed to high temperature and high pressure, and the pipes will also be oxidized and corroded under the action of high-temperature flue gas and water vapor. Therefore, high-strength and corrosion-resistant alloy seamless steel pipes are needed to assist the boiler.

[0003] For example, the announcement number CN215721364U discloses a high-strength corrosion-resistant seamless steel pipe for high-pressure boilers, including a pipe body, a buffer layer is provided on the inner cavity side wall of the pipe body, an inner epoxy glass layer is provided in the buffer layer, an outer epoxy glass layer is provided on the outer side wall of the pipe body, and an auxiliary fixing block is integrally formed on the side wall of the pipe body. The steel pipe has good structural stability during long-term use, and an auxiliary fixing block is provided on the side wall of the steel pipe. When the steel pipe needs to be transported, the auxiliary support block can be stored in the assembly groove, and the steel pipe can be moved by rolling the auxiliary fixing block. When the steel pipe needs to be fixed, the auxiliary support block can be unfolded, and then the steel pipe is fixed by clamping the auxiliary support block with the ground to prevent the steel pipe from rolling during placement.

[0004] However, this kind of high-strength corrosion-resistant high-pressure boiler alloy seamless steel pipe can effectively improve the corrosion resistance of the steel pipe when in use. However, when the seamless steel pipe is used for daily laying, the anti-collision buffering effect of the steel pipe is not high, so that the seamless steel pipe will be bumped when used for a long time, causing bending on the surface of the steel pipe and reducing the service life of the steel pipe.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube is proposed. Utility Model Content

[0006] The utility model aims to provide a high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel pipe to solve the problem of low anti-collision and buffering effect on the steel pipe proposed in the above background technology.

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel pipe, comprising a steel pipe main body, an inner epoxy glass layer is arranged inside the steel pipe main body, a buffer layer is arranged on the surface of the inner epoxy glass layer, an outer epoxy glass layer is arranged on the surface of the buffer layer, a protective sleeve is inserted into the outer wall of the steel pipe main body, the outer wall of the protective sleeve is detachably connected with the buffer sleeve, the outer wall of the protective sleeve is fixedly connected with a fixed block, the outer wall of the buffer sleeve is fixedly connected with a connecting block that is clamped and connected to the outer wall of the fixed block, the outer wall of the connecting block is telescopically connected with a telescopic rod, the outer wall of the telescopic rod is sleeved with a first spring fixedly connected to the outer wall of the connecting block, one end of the first spring is fixedly connected with a pulling block fixedly connected to one end of the telescopic rod, one end of the telescopic rod is fixedly connected with a clamping rod that is slidably connected to the outer wall of the fixed block, and a clamping groove is provided at the connection portion between the outer wall of the fixed block and the clamping rod.

[0008] Furthermore, the inner wall of the buffer sleeve is provided with a placement cavity, the inner wall of the placement cavity is fixedly connected to a fixing column, the inner wall of the fixing column is fixedly connected to a second spring, and one end of the second spring is fixedly connected to a connecting column slidably connected to the inner wall of the fixing column.

[0009] Furthermore, the protective sleeve is made of silicone.

[0010] Furthermore, the fixing blocks are symmetrically arranged on both sides of the protective sleeve.

[0011] Furthermore, the outer wall contours of the extruded parts of the clamping rod and the fixing block are in an arc shape, and the inner wall contour of the clamping slot is larger than the outer wall contour of the clamping rod.

[0012] Furthermore, the fixing column is arranged in a ring shape on the inner wall of the oral cavity.

[0013] Furthermore, a connecting groove is provided at the connecting portion between the inner wall of the fixing column and the connecting column.

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

[0015] The utility model arranges the clamping rod and the connecting column. When the alloy seamless steel pipe is used in daily life, in order to improve the anti-collision effect of the alloy seamless steel pipe after being connected to the boiler for use, the protective sleeve can be first inserted into the surface of the steel pipe, so that the steel pipe is suspended and the wear effect on the surface of the steel pipe is reduced. The clamping connection between the clamping rod and the fixing block makes the buffer sleeve and the protective sleeve clamped and fixed, and the buffer sleeve is simultaneously sleeved on the surface of the steel pipe. When the steel pipe is collided, it will first collide with the surface of the buffer sleeve and squeeze the connecting column placed in the mouth. Under the connecting groove opened on the second spring and the inner wall of the fixing column, the force exerted on the connecting column is buffered and released, so as to achieve the effect of preventing the steel pipe surface from being bumped. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of a steel pipe;

[0017] Figure 2 It is a schematic diagram of the structure of the steel pipe in another direction;

[0018] Figure 3 It is a schematic diagram of the internal structure of the steel pipe;

[0019] Figure 4 It is a schematic diagram of the connection structure between the clamping rod and the fixing block;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the buffer sleeve;

[0021] Figure 6 It is a schematic diagram of the internal cross-sectional structure of the fixed column.

[0022] In the figure: 1. Steel pipe body; 2. Inner epoxy glass layer; 3. Buffer layer; 4. Outer epoxy glass layer; 5. Protective sleeve; 6. Buffer sleeve; 7. Placement mouth; 8. Fixed block; 9. Connecting block; 10. Telescopic rod; 11. First spring; 12. Pull block; 13. Clamping rod; 14. Clamping slot; 15. Second spring; 16. Connecting column; 17. Fixed column. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1: Figure 1-Figure 4 As shown, a high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel pipe comprises a steel pipe body 1, an inner epoxy glass layer 2 is arranged inside the steel pipe body 1, a buffer layer 3 is arranged on the surface of the inner epoxy glass layer 2, an outer epoxy glass layer 4 is arranged on the surface of the buffer layer 3, a protective sleeve 5 is inserted into the outer wall of the steel pipe body 1, the outer wall of the protective sleeve 5 is detachably connected with a buffer sleeve 6, the outer wall of the protective sleeve 5 is fixedly connected with a fixed block 8, the outer wall of the buffer sleeve 6 is fixedly connected with a connecting block 9 which is snap-connected with the outer wall of the fixed block 8, the outer wall of the connecting block 9 is telescopically connected with a telescopic rod 10, the outer wall of the telescopic rod 10 is sleeved with a first spring 11 which is fixedly connected with the outer wall of the connecting block 9, one end of the first spring 11 is fixedly connected with a pulling block 12 which is fixedly connected with one end of the telescopic rod 10, one end of the telescopic rod 10 is fixedly connected with a clamping rod 13 which is slidably connected with the outer wall of the fixed block 8, and a clamping groove 14 is provided at the connecting portion between the outer wall of the fixed block 8 and the clamping rod 13.

[0025] Furthermore, the material of the protective sleeve 5 is silicone material, which is conducive to the protective sleeve 5 being easily inserted into the surface of the steel pipe.

[0026] Furthermore, the fixing blocks 8 are symmetrically arranged on both sides of the protective sleeve 5 , which is beneficial to improve the stability of the engagement connection between the buffer sleeve 6 and the protective sleeve 5 .

[0027] Furthermore, the outer wall contour of the extruded part of the clamping rod 13 and the fixed block 8 is in an arc shape, and the inner wall contour of the clamping groove 14 is larger than the outer wall contour of the clamping rod 13. This is beneficial to facilitate the extrusion and extension of the first spring 11 through the setting of the arc-shaped outer wall contour of the extruded part of the clamping rod 13 and the fixed block 8, thereby achieving the effect of convenient clamping between the protective cover 5 and the buffer cover 6.

[0028] Embodiment 2: Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the utility model proposes a high-strength corrosion-resistant high-pressure boiler alloy seamless steel pipe. Compared with the first embodiment, as another embodiment of the utility model, the inner wall of the buffer sleeve 6 is provided with a placement cavity 7, the inner wall of the placement cavity 7 is fixedly connected with a fixing column 17, the inner wall of the fixing column 17 is fixedly connected with a second spring 15, and one end of the second spring 15 is fixedly connected with a connecting column 16 which is slidably connected to the inner wall of the fixing column 17. When working, by setting the clamping rod 13 and the connecting column 16, it is beneficial to improve the alloy seamless steel pipe in daily use after being connected to the boiler. To achieve the anti-collision effect, the protective sleeve 5 can be first inserted into the surface of the steel pipe so that the steel pipe is suspended in the air to reduce the wear effect on the surface of the steel pipe, and the buffer sleeve 6 and the protective sleeve 5 are clamped and fixed through the clamping connection between the clamping rod 13 and the fixing block 8, and the buffer sleeve 6 is simultaneously sleeved on the surface of the steel pipe, and when the steel pipe is collided, it will first collide with the surface of the buffer sleeve 6, and squeeze the connecting column 16 placed in the oral cavity 7, and under the connecting groove opened on the inner wall of the second spring 15 and the fixing column 17, the force exerted on the connecting column 16 is buffered and released, thereby achieving the effect of preventing the steel pipe surface from being bumped.

[0029] Furthermore, the fixing column 17 is arranged in a ring shape on the inner wall of the oral cavity 7 , which is beneficial for the buffer sleeve 6 to be prevented from being bumped in all directions.

[0030] Furthermore, a connecting groove is provided at the connecting portion between the inner wall of the fixing column 17 and the connecting column 16, which is beneficial for buffering and releasing the force exerted on the connecting column 16, thereby achieving the effect of preventing the steel pipe surface from being bumped.

[0031] Working principle: When using this high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel pipe, when the alloy seamless steel pipe is used daily, in order to improve the anti-collision effect of the alloy seamless steel pipe after being connected to the boiler for use, the protective sleeve 5 can be inserted into the surface of the steel pipe first, so that the steel pipe is suspended in the air to reduce the wear effect on the surface of the steel pipe, and the buffer sleeve 6 and the protective sleeve 5 are clamped and fixed through the clamping connection between the clamping rod 13 and the fixed block 8, and the buffer sleeve 6 is simultaneously sleeved on the surface of the steel pipe, and when the steel pipe is collided, it will first collide with the surface of the buffer sleeve 6, and squeeze the connecting column 16 placed in the mouth 7, and under the connecting groove opened on the inner wall of the second spring 15 and the fixed column 17, the force exerted on the connecting column 16 is buffered and released, thereby achieving the effect of preventing the steel pipe surface from being bumped.

[0032] This is the working principle of this high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel pipe.

[0033] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube, comprising a steel tube body (1), characterized in that: An inner epoxy glass layer (2) is provided inside the steel pipe body (1), a buffer layer (3) is provided on the surface of the inner epoxy glass layer (2), an outer epoxy glass layer (4) is provided on the surface of the buffer layer (3), a protective sleeve (5) is inserted into the outer wall of the steel pipe body (1), a buffer sleeve (6) is detachably connected to the outer wall of the protective sleeve (5), a fixing block (8) is fixedly connected to the outer wall of the protective sleeve (5), and a connecting block (6) is fixedly connected to the outer wall of the fixing block (8) 9), the outer wall of the connecting block (9) is telescopically connected to a telescopic rod (10), the outer wall of the telescopic rod (10) is sleeved with a first spring (11) fixedly connected to the outer wall of the connecting block (9), one end of the first spring (11) is fixedly connected to a pulling block (12) fixedly connected to one end of the telescopic rod (10), one end of the telescopic rod (10) is fixedly connected to a clamping rod (13) slidably connected to the outer wall of the fixed block (8), and a clamping groove (14) is provided at the connection portion between the outer wall of the fixed block (8) and the clamping rod (13).

2. The high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube according to claim 1, characterized in that: The inner wall of the buffer sleeve (6) is provided with a placement cavity (7), the inner wall of the placement cavity (7) is fixedly connected to a fixing column (17), the inner wall of the fixing column (17) is fixedly connected to a second spring (15), and one end of the second spring (15) is fixedly connected to a connecting column (16) slidably connected to the inner wall of the fixing column (17).

3. The high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube according to claim 1, characterized in that: The material of the protective sleeve (5) is silicone material.

4. The high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube according to claim 1, characterized in that: The fixing blocks (8) are symmetrically arranged on both sides of the protective sleeve (5).

5. The high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube according to claim 1, characterized in that: The outer wall contours of the extrusion parts of the clamping rod (13) and the fixing block (8) are in an arc shape, and the inner wall contour of the clamping groove (14) is larger than the outer wall contour of the clamping rod (13).

6. The high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube according to claim 2, characterized in that: The fixing column (17) is arranged in a ring shape on the inner wall of the oral cavity (7).

7. The high-strength, corrosion-resistant, high-pressure boiler alloy seamless steel tube according to claim 2, characterized in that: A connecting groove is provided at the connecting portion between the inner wall of the fixing column (17) and the connecting column (16).

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