Isolation type high-temperature-resistant steel pipe

Abstract

The utility model relates to the technical field of high-temperature-resistant steel pipes, in particular to an isolation type high-temperature-resistant steel pipe which comprises a steel pipe body and a flange, the end of the steel pipe body is fixedly connected with the flange, the outer wall of the steel pipe body is fixedly connected with a round block, and the outer wall of the round block abuts against a plastic pipe. The end of the plastic pipe is fixedly connected with the threaded ring, and the outer wall of the plastic pipe is connected with a high-temperature-resistant mechanism. Radiant heat can be reflected through the reflecting layer, the ceramic fiber felt can resist the temperature of 1260 DEG C, nano aerogel can also be used in a local ultra-high-temperature area, then the steel pipe body is inserted into a plastic pipe, the round blocks on the outer wall of the steel pipe body can abut against the inner wall of the plastic pipe, and an isolation distance is formed between the round blocks and the plastic pipe to the steel pipe body; the plastic pipe and the round block can isolate external temperature transmitted to the surface of the steel pipe body, and the quality of raw materials conveyed by the steel pipe body is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of high-temperature resistant steel pipes, specifically an isolation-type high-temperature resistant steel pipe. Background Technology

[0002] Steel pipes are not only used for transporting fluids and powdery solids, exchanging heat energy, and manufacturing mechanical parts and containers, but they are also an economical steel material widely used in ventilation and heating equipment, engineering structures, thermal equipment, petrochemicals, machinery manufacturing, geological drilling, high-pressure equipment, national defense, and aerospace, among many other fields.

[0003] For example, a composite high-temperature resistant steel pipe with authorization announcement number "CN216139524U" solves the problem that the heat from high-temperature liquids is easily dissipated, and continuous flow of high-temperature liquids can easily damage the steel pipe. The aforementioned composite high-temperature resistant steel pipe has a first composite splicing pipe and a second composite splicing pipe. The composite splicing and reinforcement structure formed by the first composite splicing pipe, the second composite splicing pipe, the first composite reinforcement pipe, and the second composite reinforcement pipe can effectively improve the compressive strength and bending strength of the steel pipe, thereby effectively improving the service strength of the steel pipe. Considering that in existing composite high-temperature resistant steel pipes, the heat-resistant material is directly wrapped on the outside of the steel pipe, the external temperature is transferred to the surface of the steel pipe through the object, causing the raw materials transported inside the steel pipe to absorb the temperature of the steel pipe surface. In fact, the raw materials of the steel pipe may even deteriorate during transportation, affecting the quality. Utility Model Content

[0004] The purpose of this invention is to solve the problem that in existing composite high-temperature resistant steel pipes, the raw materials transported inside the steel pipe absorb the temperature of the steel pipe surface, and the raw materials transported in the steel pipe may even deteriorate during transportation, affecting the quality. Therefore, an isolation-type high-temperature resistant steel pipe is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an isolation-type high-temperature resistant steel pipe, comprising a steel pipe body and a flange, wherein the end of the steel pipe body is fixedly connected to the flange, the outer wall of the steel pipe body is fixedly connected to a circular block, the outer wall of the circular block is pressed against a plastic pipe, the end of the plastic pipe is fixedly connected to a threaded ring, and the outer wall of the plastic pipe is connected to a high-temperature resistant mechanism.

[0006] Preferably, the high-temperature resistant mechanism includes a reflective layer, the outer wall of which is attached to a plastic tube, the outer wall of which is fixedly connected to a ceramic fiber felt, and the outer wall of which is fixedly connected to a nano-aerogel.

[0007] Preferably, the other end of the plastic tube is machined with a threaded groove, and the outer wall of the nano-aerogel is connected to a fixing mechanism.

[0008] Preferably, the fixing mechanism includes a spiral strip, the inner wall of which is pressed against the nano-aerogel, the inner wall of which is pressed against the fixing pin, and the outer wall of which is fixedly connected to the ceramic coating.

[0009] Preferably, the outer wall of the fixing pin abuts against the reflective layer, ceramic fiber felt, and nano-aerogel.

[0010] Preferably, the surface of the spiral strip is machined with insertion holes.

[0011] The present invention proposes an isolation-type high-temperature resistant steel pipe, which has the following advantages: the reflective layer can reflect radiant heat, the ceramic fiber felt is resistant to 1260°C, and the nano-aerogel can also be used in local ultra-high temperature areas. When the steel pipe body is inserted into the plastic pipe, the circular block on the outer wall of the steel pipe body will press against the inner wall of the plastic pipe. The circular block and the plastic pipe form an isolation distance for the steel pipe body, which can isolate the plastic pipe and the circular block from the temperature transferred to the surface of the steel pipe body from the outside, thereby improving the quality of the raw materials transported by the steel pipe body. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure from the center view;

[0014] Figure 3 for Figure 1 Enlarged structural diagram of the plastic tube;

[0015] Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle;

[0016] Figure 5 for Figure 2 Enlarged structural diagram at point B;

[0017] Figure 6 for Figure 1 A magnified schematic diagram of the central spiral structure.

[0018] In the diagram: 1. Steel pipe body, 2. Flange, 3. Round block, 4. Plastic pipe, 5. Threaded ring, 6. High temperature resistant mechanism, 601. Reflective layer, 602. Ceramic fiber felt, 603. Nano aerogel, 7. Threaded groove, 8. Fixing mechanism, 801. Spiral strip, 802. Fixing pin, 803. Ceramic coating, 9. Insertion hole. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Example 1:

[0021] Please see Figure 1-6 In this embodiment, an isolation-type high-temperature resistant steel pipe includes a steel pipe body 1 and a flange 2. The end of the steel pipe body 1 is fixedly connected to the flange 2. The outer wall of the steel pipe body 1 is fixedly connected to a round block 3. The outer wall of the round block 3 is pressed against a plastic pipe 4. The end of the plastic pipe 4 is fixedly connected to a threaded ring 5. A high-temperature resistant mechanism 6 is connected to the outer wall of the plastic pipe 4.

[0022] The high-temperature resistant mechanism 6 includes a reflective layer 601. The outer wall of the reflective layer 601 is bonded to the plastic tube 4. The reflective layer 601 is made of aluminum foil or a ceramic reflective film (thickness 0.1-0.3mm) and reflects radiant heat. The outer wall of the reflective layer 601 is fixedly connected to a ceramic fiber felt 602. The ceramic fiber felt 602 is made of ceramic fiber felt (density 128kg / m³). 2 With a thermal conductivity of 0.12 W / (m·K) and a temperature resistance of 1260°C, the outer wall of the ceramic fiber felt 602 is fixedly connected to the nano aerogel 603.

[0023] The reflective layer 601 can reflect radiant heat, the ceramic fiber felt 602 is heat resistant up to 1260°C, and the nano aerogel 603 can also be used in local ultra-high temperature areas. At this time, the steel pipe body 1 is inserted into the plastic pipe 4, so that the round block 3 on the outer wall of the steel pipe body 1 will press against the inner wall of the plastic pipe 4. The round block 3 and the plastic pipe 4 form an isolation distance for the steel pipe body 1, which can isolate the plastic pipe 4 and the round block 3 from the temperature transferred to the surface of the steel pipe body 1 from the outside, thereby improving the quality of the raw materials transported by the steel pipe body 1.

[0024] The other end of the plastic tube 4 is machined with a threaded groove 7. The outer wall of the nano-aerogel 603 is connected to a fixing mechanism 8. By inserting the fixing pin 802 into the insertion hole 9 on the spiral strip 801, the fixing pin 802 will also be inserted into the reflective layer 601, ceramic fiber felt 602 and nano-aerogel 603, achieving the effect of fixing the reflective layer 601, ceramic fiber felt 602 and nano-aerogel 603 to the outside of the plastic tube 4. The fixing mechanism 8 includes a spiral strip 801. The inner wall of the spiral strip 801 abuts against the nano-aerogel 603 and the fixing pin 802. The outer wall of the spiral strip 801 is fixedly connected to the ceramic coating 803. The ceramic coating 803 (such as Al₂O₃-ZrO₂) can improve the surface wear resistance and oxidation resistance.

[0025] The outer wall of the fixing pin 802 is tightly pressed against the reflective layer 601, the ceramic fiber felt 602 and the nano aerogel 603, and the surface of the spiral strip 801 is machined with insertion holes 9.

[0026] Working principle:

[0027] The reflective layer 601, ceramic fiber felt 602, and nano-aerogel 603 are sequentially arranged and wrapped around the outside of the plastic tube 4. A 310S stainless steel spiral strip 801 is inserted into the outside of the plastic tube 4 from the side. The spiral strip 801 is manually rotated to align its insertion hole 9 with the pre-machined round holes in the reflective layer 601, ceramic fiber felt 602, and nano-aerogel 603. A fixing pin 802 is then inserted into the insertion hole 9 on the spiral strip 801, which in turn inserts into the reflective layer 601, ceramic fiber felt 602, and nano-aerogel 603, ensuring a more secure fit. The reflective layer 601 can be made of aluminum foil or a ceramic reflective film (thickness 0.1-0.3mm) to reflect radiant heat. The ceramic fiber felt 602 is made of ceramic fiber felt (density 128kg / m³). 2. Thermal conductivity 0.12W / (m·K)), temperature resistance 1260°C, nano aerogel 603 is nano aerogel (thickness 10-20mm, thermal conductivity 0.018W / (m·K)), used in local ultra-high temperature areas, 310S stainless steel spiral strip 801 can resist mechanical impact and compensate for thermal expansion, 310S stainless steel spiral strip 801 external ceramic coating 803 (such as Al2O3-ZrO2) can improve surface wear resistance and oxidation resistance. At this time, the steel pipe body 1 is inserted into the plastic pipe 4, so that the round block 3 on the outer wall of the steel pipe body 1 will press against the inner wall of the plastic pipe 4, preventing the steel pipe body 1 from moving significantly inside the plastic pipe 4. When the flange 2 at the end of the steel pipe body 1 is connected to other flanges with the same external flanges by screws for extension, the threaded ring 5 on the plastic pipe 4 can be screwed into the threaded groove 7 at the other end of the same plastic pipe 4, so that the length of the plastic pipe 4 can be spliced ​​according to the length of the steel pipe body 1.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A type of isolation-type high-temperature resistant steel pipe, comprising a steel pipe body (1) and a flange (2), wherein the end of the steel pipe body (1) is fixedly connected to the flange (2), characterized in that: The outer wall of the steel pipe body (1) is fixedly connected to the round block (3), the outer wall of the round block (3) is pressed against the plastic pipe (4), the end of the plastic pipe (4) is fixedly connected to the threaded ring (5), and the outer wall of the plastic pipe (4) is connected to a high-temperature resistant mechanism (6).

2. The isolation-type high-temperature resistant steel pipe according to claim 1, characterized in that: The high-temperature resistant mechanism (6) includes a reflective layer (601), the outer wall of which is attached to a plastic tube (4), the outer wall of which is fixedly connected to a ceramic fiber felt (602), and the outer wall of which is fixedly connected to a nano aerogel (603).

3. The isolation-type high-temperature resistant steel pipe according to claim 2, characterized in that: The other end of the plastic tube (4) is machined with a threaded groove (7), and the outer wall of the nano aerogel (603) is connected to a fixing mechanism (8).

4. The isolation-type high-temperature resistant steel pipe according to claim 3, characterized in that: The fixing mechanism (8) includes a spiral strip (801), the inner wall of which is pressed against the nano aerogel (603), the inner wall of which is pressed against the fixing pin (802), and the outer wall of which is fixedly connected to the ceramic coating (803).

5. The isolation-type high-temperature resistant steel pipe according to claim 4, characterized in that: The outer wall of the fixing pin (802) abuts against the reflective layer (601), the ceramic fiber felt (602), and the nano aerogel (603).

6. The isolation-type high-temperature resistant steel pipe according to claim 4, characterized in that: The surface of the spiral strip (801) is machined with insertion holes (9).

Images