High-temperature-resistant stainless steel seamless steel tube for chemical industry

Abstract

The utility model discloses a high-temperature-resistant stainless steel seamless steel tube for chemical engineering, which belongs to the technical field of stainless steel seamless steel tubes and comprises a steel tube body, ventilating ducts are arranged on the inner sides of radiating fins, the outer surfaces of the radiating fins are connected with a wind gathering cover, and the outer surface of the steel tube body is connected with a flow guide plate. Through cooperation of the heat dissipation fins, the ventilating duct, the wind gathering cover and the flow guide plate, the heat dissipation area of the steel pipe body is increased through the heat dissipation fins, the heat dissipation efficiency of the heat dissipation fins is improved through the ventilating duct, flowing air is captured and the flowing direction is changed through the wind gathering cover, and the flowing air enters the ventilating duct to form airflow; the flow guide plates can reduce resistance, accelerate outflow of air in the ventilation duct and increase the circulation speed of the air in the ventilation duct, heat, absorbed by the cooling fins, on the steel pipe body is dissipated as soon as possible, the effect of reducing the temperature of the steel pipe body is achieved, and the steel pipe body cannot deform due to high temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel seamless pipes, in particular to a high temperature resistant stainless steel seamless pipe for chemical industry. Background Art

[0002] High temperature resistant stainless steel seamless pipe for chemical industry is a kind of pipeline material specially designed for chemical industry to transmit flowing chemical media. It can withstand high temperature, high pressure and corrosive media environment. This kind of steel pipe is usually made of stainless steel material with excellent high temperature resistance and corrosion resistance. They have good oxidation resistance, corrosion resistance and high temperature strength to ensure safety and reliability in harsh chemical working conditions.

[0003] In order to improve the high temperature resistance effect, most of the existing high temperature resistant stainless steel seamless pipes for chemical use are filled with insulation materials inside to reduce the high temperature generated by chemical raw materials and transferred to the stainless steel seamless pipes. Although the insulation materials can reduce heat conduction, they cannot completely block the conduction of heat sources, and some heat is still conducted to the stainless steel seamless pipes. After being heated for a long time, the internal stress of the stainless steel seamless pipes may change, and the thermal expansion and contraction deformation may become larger, which may cause the connection points between the stainless steel seamless pipes to squeeze each other, resulting in gaps at the connection points, causing the medium transmitted inside the stainless steel seamless pipe to leak to the outside. In order to solve this technical problem, the utility model proposes a high temperature resistant stainless steel seamless pipe for chemical use. Utility Model Content

[0004] The main purpose of the utility model is to provide a high temperature resistant stainless steel seamless pipe for chemical industry, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high temperature resistant stainless steel seamless pipe for chemical use comprises a steel pipe body, a ceramic pipe is arranged inside the steel pipe body, a heat dissipation fin is connected to the outer surface of the steel pipe body, a ventilation duct is opened on the inner side of the heat dissipation fin, a wind collecting hood is connected to the outer surface of the heat dissipation fin, a guide plate is connected to the outer surface of the steel pipe body, and the guide plate is located outside the heat dissipation fin, and flanges are connected to both ends of the steel pipe body.

[0007] Preferably, the heat dissipation fins are multiple, and the multiple heat dissipation fins are arranged in a circular equidistant array.

[0008] Preferably, there are a plurality of wind concentrators, each of which has an inclination angle, wherein one of the wind concentrators is located in the middle of the heat dissipation fins, and the other two wind concentrators are located at both ends of the heat dissipation fins.

[0009] Preferably, the outer surface of the ceramic tube is connected with ceramic fibers, and the outer surface of the ceramic fibers is connected to the inner wall of the steel tube body.

[0010] Preferably, one side of one of the flanges is connected to an extension tube, and a groove is provided on the inner side of the other flange, and the groove is adapted to the extension tube, and a first sealing gasket is installed on the inner wall of the groove.

[0011] Preferably, a sealing groove is formed on the inner side of one of the flanges, and a second sealing gasket is installed on the inner wall of the sealing groove.

[0012] Preferably, a top ring is connected to one side of the other flange, and the top ring is matched with the sealing groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model increases the heat dissipation area of ​​the steel pipe body through the cooperation among the heat dissipation fins, the ventilation duct, the wind collecting hood and the guide plate, and the heat dissipation area of ​​the steel pipe body is increased through the heat dissipation fins, the heat dissipation efficiency is improved through the ventilation duct, the flowing air is captured and the flow direction is changed by the wind collecting hood, so that the flowing air enters the ventilation duct to form an airflow, the guide plate can reduce the resistance, speed up the outflow of air in the ventilation duct, and increase the air circulation speed in the ventilation duct, and dissipate the heat absorbed by the heat dissipation fins on the steel pipe body as soon as possible, so as to achieve the effect of reducing the temperature of the steel pipe body and prevent the steel pipe body from being deformed due to high temperature.

[0015] In the utility model, through the cooperation between the first sealing gasket, the sealing groove, the second sealing gasket and the top ring, the first sealing gasket is used to seal the gap between the extension tube and the card groove, so that the flowing medium cannot leak to the outside, and the top ring is used to squeeze the second sealing gasket to seal the gap between the flanges, forming a secondary seal, thereby further improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a high temperature resistant stainless steel seamless pipe for chemical industry of the utility model;

[0017] Figure 2 This is a right side schematic diagram of a high temperature resistant stainless steel seamless steel pipe for chemical industry of the utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of a high temperature resistant stainless steel seamless pipe for chemical industry in the utility model;

[0019] Figure 4 This is a schematic cross-sectional view of a sealing groove in a high-temperature resistant stainless steel seamless steel pipe for chemical industry of the utility model;

[0020] Figure 5The utility model is a schematic diagram of the cutaway structure of a clamping groove in a high-temperature resistant stainless steel seamless pipe for chemical industry.

[0021] In the figure: 1. Steel pipe body; 2. Ceramic tube; 3. Heat dissipation fins; 4. Ventilation duct; 5. Wind collecting hood; 6. Guide plate; 7. Flange; 8. Ceramic fiber; 9. Extension pipe; 10. Slot; 11. First sealing gasket; 12. Sealing groove; 13. Second sealing gasket; 14. Top ring. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-5 As shown, a high-temperature resistant stainless steel seamless pipe for chemical use includes a steel pipe body 1. The steel pipe body 1 is made of a stainless steel seamless pipe. The stainless steel seamless pipe has good corrosion resistance and can resist the erosion of various chemical media. The seamless steel pipe can withstand greater pressure and weight and is suitable for high pressure, high temperature and complex environments. When the steel pipe body 1 transmits chemical media, it is necessary to maintain a higher pressure to make the chemical media flow. A ceramic pipe 2 is arranged inside the steel pipe body 1. The ceramic pipe 2 is made of ceramic raw materials, has good stability and corrosion resistance, and has a smaller degree of deformation when subjected to high temperature.

[0024] The outer surface of the ceramic tube 2 is connected to a ceramic fiber 8, and the outer surface of the ceramic fiber 8 is connected to the inner wall of the steel pipe body 1. The ceramic fiber 8 has high high temperature resistance, low thermal conductivity and good chemical stability, and can isolate most of the heat inside the ceramic tube 2 and block most of the heat inside the ceramic tube 2.

[0025] The outer surface of the steel pipe body 1 is connected with heat dissipation fins 3. There are multiple heat dissipation fins 3 in a circular equidistant array. The heat dissipation fins 3 surround the steel pipe body 1 for a week, so that the heat dissipation of the steel pipe body 1 is more uniform. The heat dissipation fins 3 increase the area of ​​the steel pipe body 1, accelerate the volatilization of the heat inside the steel pipe body 1 to the outside, and improve the heat dissipation effect of the steel pipe body 1. A ventilation duct 4 is opened on the inner side of the heat dissipation fin 3, and the flowing air can pass through the ventilation duct 4 from the inside, thereby accelerating the heat dissipation effect of the heat dissipation fin 3.

[0026] The outer surface of the heat dissipation fin 3 is connected with an air collecting hood 5. There are multiple air collecting hoods 5. The air collecting hoods 5 have an inclination angle. The flowing air is captured by the air collecting hoods 5. The direction of air flow is changed under the guidance of the inclination angle, so that the flowing air flows to the inside of the heat dissipation fin 3, thereby improving the heat dissipation efficiency of the heat dissipation fin 3. One of the air collecting hoods 5 is located in the middle of the heat dissipation fin 3, and the other two air collecting hoods 5 are located at both ends of the heat dissipation fin 3. Through the multiple air collecting hoods 5, both ends of the steel pipe body 1 have the function of capturing the flowing air. The middle air collecting hood 5 can prevent the flowing air from flowing to the outside and losing the effect of cooling the heat dissipation fin 3. The flowing air is guided in two directions so that the flowing air passes through the entire heat dissipation fin 3.

[0027] The outer surface of the steel pipe body 1 is connected to a guide plate 6, and the guide plate 6 is located outside the heat dissipating fins 3. The guide plate 6 has a curved curvature. After the air flows through the guide plate 6, the resistance is reduced under the guidance of the bending angle, and the air outflow to the outside is accelerated. The guide plate 6 accelerates the outflow of air inside the heat dissipating fins 3, thereby improving the air circulation speed inside the heat dissipating fins 3.

[0028] Both ends of the steel pipe body 1 are connected with flanges 7. In actual use, the length of a stainless steel seamless steel pipe is insufficient, and multiple stainless steel seamless steel pipes need to be used in series. The flanges 7 are used to connect the steel pipe body 1 to the steel pipe body 1 that needs to be connected.

[0029] An extension tube 9 is connected to one side of one flange 7, and a slot 10 is opened on the inner side of the other flange 7, and the slot 10 is adapted to the extension tube 9. When the stainless steel seamless steel pipe is connected to the stainless steel seamless steel pipe, the extension tube 9 is wrapped by the slot 10 to maintain the stability of the extension tube 9. A first sealing gasket 11 is installed on the inner wall of the slot 10. After the extension tube 9 is inserted into the slot 10, the end of the extension tube 9 contacts the first sealing gasket 11 to form a first sealing layer.

[0030] A sealing groove 12 is provided on the inner side of one of the flanges 7, and a second sealing gasket 13 is installed on the inner wall of the sealing groove 12. The sealing groove 12 is used to block and limit the outside of the second sealing gasket 13 to prevent deformation when the second sealing gasket 13 is squeezed, thereby improving the sealing effect of the second sealing gasket 13. A top ring 14 is connected to one side of the other flange 7. The top ring 14 is adapted to the sealing groove 12. The second sealing gasket 13 is squeezed by the top ring 14 to deform the second sealing gasket 13. After the second sealing gasket 13 is deformed, the gap between the top ring 14 and the sealing groove 12 is filled to form a second sealing layer. The connecting holes on the flange 7 are used to install bolts. When the bolts are tightened, the stainless steel seamless pipes at both ends are driven to move closer to each other, and when the stainless steel seamless pipes move closer to each other, power is provided for the top ring 14 to squeeze the sealing gasket.

[0031] It should be noted that in actual use of the device, first, multiple steel pipe bodies 1 are connected together through flanges 7, and the steel pipe bodies 1 are close to each other when connected. When the steel pipe bodies 1 are close to each other, the extension tube 9 squeezes the first sealing gasket 11, and the top ring 14 squeezes the second sealing gasket 13. Then the steel pipe bodies 1 are connected to each other. During use, the flowing air is blocked by the wind gathering hood 5, and the flow direction is changed to guide it into the heat dissipation fins 3. At the same time, the flowing air takes away the heat on the heat dissipation fins 3, and the air flowing out of the heat dissipation fins 3 is discharged to the outside of the steel pipe body 1 under the guidance of the guide plate 6.

[0032] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A high temperature resistant stainless steel seamless pipe for chemical industry, comprising a steel pipe body (1), characterized in that: A ceramic tube (2) is arranged inside the steel tube body (1); a heat dissipation fin (3) is connected to the outer surface of the steel tube body (1); a ventilation duct (4) is provided on the inner side of the heat dissipation fin (3); a wind collecting hood (5) is connected to the outer surface of the heat dissipation fin (3); a guide plate (6) is connected to the outer surface of the steel tube body (1); and the guide plate (6) is located outside the heat dissipation fin (3); and flanges (7) are connected to both ends of the steel tube body (1).

2. The high temperature resistant stainless steel seamless pipe for chemical industry according to claim 1, characterized in that: The heat dissipation fins (3) are multiple, and the multiple heat dissipation fins (3) are arranged in a circular equidistant array.

3. The high temperature resistant stainless steel seamless pipe for chemical industry according to claim 1, characterized in that: There are multiple wind collecting covers (5), each of which has an inclined angle, wherein one of the wind collecting covers (5) is located in the middle of the heat dissipation fins (3), and the other two wind collecting covers (5) are located at both ends of the heat dissipation fins (3).

4. The high temperature resistant stainless steel seamless pipe for chemical industry according to claim 1, characterized in that: The outer surface of the ceramic tube (2) is connected to a ceramic fiber (8), and the outer surface of the ceramic fiber (8) is connected to the inner wall of the steel tube body (1).

5. The high temperature resistant stainless steel seamless pipe for chemical industry according to claim 1, characterized in that: One side of one of the flanges (7) is connected to an extension tube (9), and a slot (10) is provided on the inner side of the other flange (7). The slot (10) is adapted to fit the extension tube (9), and a first sealing gasket (11) is installed on the inner wall of the slot (10).

6. A high temperature resistant stainless steel seamless pipe for chemical industry according to claim 5, characterized in that: A sealing groove (12) is provided on the inner side of one of the flanges (7), and a second sealing gasket (13) is installed on the inner wall of the sealing groove (12).

7. A high temperature resistant stainless steel seamless pipe for chemical industry according to claim 6, characterized in that: A top ring (14) is connected to one side of the other flange (7), and the top ring (14) is matched with the sealing groove (12).

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