High-temperature spring steel pipe structure

Abstract

The utility model relates to the technical field of steel pipe structures, in particular to a high-temperature spring steel pipe structure. The high-temperature spring steel pipe structure adopts a multi-layer composite structure design, and comprises a wear-resistant ceramic coating, a lining layer, a nickel base alloy transition layer, a thermal insulation filling layer, a carbon fiber reinforcement layer, a thermal insulation buffer layer, a spring layer and a buffer rubber layer which are sequentially arranged from inside to outside, and the wear-resistant ceramic coating serves as the innermost layer of a pipeline. The wear-resistant ceramic coating is directly contacted with a conveying medium, and the lining layer is arranged on the outer surface of the wear-resistant ceramic coating. All the functional layers have a synergistic effect, the heat insulation filling layer and the heat insulation buffer layer effectively prevent heat transfer, the spring layer is made of high-temperature-resistant spring steel wires, and the high-temperature-resistant characteristic of the nickel-based alloy transition layer is combined, so that the pipeline can stably operate in a high-temperature environment, and structural deformation or performance reduction caused by high temperature is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe structure technical field especially relates to a high temperature spring steel pipe structure. BACKGROUND

[0002] In the high-temperature industrial field such as chemical industry, electric power, metallurgy, high-temperature resistant pipeline is often used to transport high-temperature fluid or gas medium. The existing high-temperature resistant pipeline, in the process of long-term bearing high temperature, high pressure and medium scouring and wearing, is prone to structural damage, heat insulation performance decline, insufficient anti-interference ability and other problems. For example, the inner wall of ordinary high-temperature resistant steel pipe is easy to wear under the scouring of high-temperature medium, heat is easy to dissipate through the pipe wall, and in the complex industrial electromagnetic environment, the performance of the pipeline may be affected by electromagnetic interference, at the same time, the pipeline is also difficult to adapt to the deformation caused by thermal expansion and cold shrinkage, resulting in shortened service life, affecting the continuity and stability of industrial production.

[0003] Therefore, there is an urgent need for a high-temperature spring steel pipe structure that can solve the above problems. SUMMARY

[0004] In order to overcome the shortcomings mentioned in the background art, the utility model provides a high-temperature spring steel pipe structure.

[0005] The technical scheme of the utility model is: a high-temperature spring steel pipe structure adopts a multi-layer composite structure design, including wear-resistant ceramic coating, inner lining layer, nickel-based alloy transition layer, temperature insulation filling layer, carbon fiber reinforced layer, heat insulation buffer layer, spring layer and buffer rubber layer arranged from inside to outside, the wear-resistant ceramic coating is the innermost layer of the pipeline, directly contacting with the conveying medium, the inner lining layer is the second, the inner lining layer is arranged on the outer surface of the wear-resistant ceramic coating, the outer surface of the inner lining layer is formed with a nickel-based alloy transition layer by electroplating, the temperature insulation filling layer is filled outside the nickel-based alloy transition layer, the carbon fiber reinforced layer is wound outside the temperature insulation filling layer, the heat insulation buffer layer is wrapped outside the carbon fiber reinforced layer, the spring layer is fixed outside the heat insulation buffer layer in a spiral shape, and the buffer rubber layer is the outermost layer of the pipeline, which is wrapped outside the spring layer.

[0006] In one embodiment, the inner lining layer is a polytetrafluoroethylene lining.

[0007] In one embodiment, it further includes an electromagnetic shielding layer, which is arranged between the heat insulation buffer layer and the spring layer.

[0008] In one embodiment, it further includes a fiber composite layer, which is located between the spring layer and the buffer rubber layer, connected with the spring layer by winding and fixed by being wrapped by the buffer rubber layer.

[0009] In one embodiment, it further includes a thermistor, and the thermistor is embedded in the temperature insulation filling layer.

[0010] In one embodiment, the outer surface of the buffer rubber layer is provided with scale marks.

[0011] The beneficial effects are: 1. The synergistic effect of each functional layer, the temperature insulation filling layer and the heat insulation buffer layer effectively prevent heat transfer, the spring layer uses high-temperature resistant spring steel wire, combined with the high-temperature resistant characteristics of the nickel-based alloy transition layer, so that the pipeline can operate stably in a high-temperature environment, and structural deformation or performance degradation caused by high temperature is avoided.

[0012] 2. The wear-resistant ceramic coating as the innermost layer of the pipeline uses high-hardness and wear-resistant ceramic material to resist medium scouring, greatly improves the wear resistance of the pipeline, prolongs the service life, and reduces the maintenance cost.

[0013] 3. The electromagnetic shielding layer effectively shields external electromagnetic field interference, prevents internal electromagnetic field leakage, ensures the normal operation of the pipeline system and surrounding equipment, avoids safety hazards and equipment failures caused by electromagnetic interference. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a three-dimensional structure schematic view of the utility model.

[0015] Fig. 2 It is a plane structure schematic view of the utility model.

[0016] In the figure, 1 is a wear-resistant ceramic coating, 2 is an inner lining layer, 3 is a nickel-based alloy transition layer, 4 is a temperature insulation filling layer, 5 is a carbon fiber reinforced layer, 6 is a heat insulation buffer layer, 7 is an electromagnetic shielding layer, 8 is a spring layer, 9 is a fiber composite layer, 10 is a buffer rubber layer, 11 is a thermistor, and 12 is a scale mark. DETAILED DESCRIPTION

[0017] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0018] Embodiment: A high-temperature spring steel pipe structure, like Figs. 1-2As shown, a multi-layer composite structure design is adopted, including abrasion-resistant ceramic coating 1, inner lining layer 2, nickel-based alloy transition layer 3, temperature insulation filling layer 4, carbon fiber reinforced layer 5, thermal insulation buffer layer 6, spring layer 8 and buffer rubber layer 10 arranged from inside to outside. The abrasion-resistant ceramic coating 1 is made of high-hardness, high-temperature-resistant and wear-resistant ceramic material, which is the innermost layer of the pipeline and directly contacts with the conveying medium, effectively resisting medium scouring and wear. The inner lining layer 2 is a polytetrafluoroethylene lining with extremely low friction coefficient and good chemical stability, which can reduce the flow resistance of the medium and prevent chemical reaction between the medium and the steel pipe substrate. The inner lining layer 2 is attached to the outer surface of the abrasion-resistant ceramic coating 1 by pasting to ensure close combination. The outer surface of the inner lining layer 2 is formed with a 2mm-thick nickel-based alloy transition layer 3 by electroplating. The temperature insulation filling layer 4 is filled outside the nickel-based alloy transition layer 3. The carbon fiber reinforced layer 5 is wound outside the temperature insulation filling layer 4 at a certain winding angle and tension. The thermal insulation buffer layer 6 is wrapped outside the carbon fiber reinforced layer 5 and fixed by bonding to further prevent heat transfer and buffer the influence of external stress and vibration on the pipeline. The spring layer 8 is made of high-temperature-resistant spring steel wire arranged tightly, which is fixed outside the thermal insulation buffer layer 6 in a spiral shape. The buffer rubber layer 10 is made of high-temperature-resistant rubber, which is wrapped outside the spring layer 8.

[0019] As shown in Figs. 1-2 , it also includes an electromagnetic shielding layer 7 and a fiber composite layer 9. The electromagnetic shielding layer 7 is arranged between the thermal insulation buffer layer 6 and the spring layer 8 and is firmly connected with them by welding process. The electromagnetic shielding layer 7 can effectively shield external electromagnetic field, ensure that the pipeline and the internal transmission medium are not interfered by electromagnetic field, prevent internal electromagnetic field leakage and ensure normal operation of the pipeline system and surrounding equipment. The fiber composite layer 9 is made of high-strength glass fiber material, which is located between the spring layer 8 and the buffer rubber layer 10, connected with the spring layer 8 by winding and fixed by the buffer rubber layer 10.

[0020] As shown in Figs. 1-2 , it also includes a thermistor 11 and a scale mark line 12. The thermistor 11 is embedded in the temperature insulation filling layer 4 for real-time monitoring of the internal temperature change of the pipeline. When the temperature fluctuates abnormally, a warning signal can be sent in time so that the operator can take appropriate measures. The scale mark line 12 is engraved on the outer surface of the buffer rubber layer 10 to facilitate measurement and judgment of the pipeline during installation and use, improving the convenience and accuracy of use.

[0021] In use, when the pipeline transports high-temperature medium, the wear-resistant ceramic coating 1 and the inner lining layer 2 resist the erosion and corrosion of the medium; the temperature insulation filling layer 4 and the heat insulation buffer layer 6 block the heat transfer; the electromagnetic shielding layer 7 shields the electromagnetic field interference; the spring layer 8 absorbs thermal stress and vibration energy; the carbon fiber reinforced layer 5 and the fiber composite layer 9 ensure the strength and stiffness of the pipeline; the buffer rubber layer 10 buffers stress and prevents impurities from entering, at the same time, the thermistor 11 monitors the internal temperature of the pipeline in real time, and the scale mark line 12 can be used for measurement and judgment during installation and use, ensuring the safe, stable and efficient operation of the pipeline.

Claims

1. A high temperature spring steel tube structure, characterized by: The multilayer composite structure is designed, including abrasion-resistant ceramic coating (1), inner lining layer (2), nickel-based alloy transition layer (3), temperature insulation filling layer (4), carbon fiber reinforced layer (5), heat insulation buffer layer (6), spring layer (8) and buffer rubber layer (10) arranged from inside to outside, the abrasion-resistant ceramic coating (1) is the innermost layer of the pipeline and directly contacts the conveying medium, the inner lining layer (2) is arranged on the outer surface of the abrasion-resistant ceramic coating (1), the outer surface of the inner lining layer (2) is formed with the nickel-based alloy transition layer (3) by electroplating, the temperature insulation filling layer (4) is filled outside the nickel-based alloy transition layer (3), the carbon fiber reinforced layer (5) is wound outside the temperature insulation filling layer (4), the heat insulation buffer layer (6) is wrapped outside the carbon fiber reinforced layer (5), the spring layer (8) is fixed outside the heat insulation buffer layer (6) in a spiral shape, and the buffer rubber layer (10) is the outermost layer of the pipeline and is wrapped outside the spring layer (8).

2. A high temperature spring steel tube structure as claimed in claim 1, wherein: The inner lining layer (2) is a polytetrafluoroethylene lining.

3. A high temperature spring steel tube structure as claimed in claim 2, wherein: The electromagnetic shielding layer (7) is arranged between the heat insulation buffer layer (6) and the spring layer (8).

4. A high temperature spring steel tube structure as claimed in claim 3, wherein: The fiber composite layer (9) is arranged between the spring layer (8) and the buffer rubber layer (10), is connected with the spring layer (8) by winding and is fixed by being wrapped by the buffer rubber layer (10).

5. A high temperature spring steel tube structure as claimed in claim 4, wherein: The thermistor (11) is embedded in the temperature insulation filling layer (4).

6. A high temperature spring steel tube structure as claimed in claim 5, wherein: The scale mark line (12) is engraved on the outer surface of the buffer rubber layer (10).

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