A high-temperature resistant composite board for well blowout emergency response

Abstract

This invention discloses a high-temperature resistant composite panel for well blowout emergency response, comprising a heat-reflective coating, a first alloy steel layer, an ultra-thin refractory fiber paper layer, an aerogel insulation felt layer, and a second alloy steel layer arranged sequentially. The heat-reflective coating is applied to the outer surface of the first alloy steel layer and is formed by curing a coating composed of micronized metal oxides, rare earth oxides, and a water-based adhesive. Both alloy steel layers are made of austenitic stainless steel. The ultra-thin refractory fiber paper is a fiber layer woven from SiO2 crystalline fibers. The aerogel insulation felt is a felt material formed by blending SiO2 aerogel particles with fibers. This high-temperature resistant composite panel for well blowout emergency response achieves lightweight structure while maintaining structural strength at high temperatures, improving the heat radiation resistance of the protective composite panel surface, enhancing overall fireproof and heat insulation performance, effectively improving the protection of equipment and personnel during well blowout and fire emergency response operations, ensuring operational safety, and improving emergency response efficiency.

Description

Technical Field

[0001] This invention relates to the fields of safety protection, well blowout emergency response, and fire rescue, and particularly to a high-temperature resistant composite board for well blowout emergency response. Background Technology

[0002] After an oil and gas well blowout and subsequent fire, the environment at the fire-fighting site is extremely harsh. High-intensity heat radiation and direct horizontal flames can cause casualties among rescue workers and damage to rescue equipment, forcing the rescue operation to be interrupted. Therefore, it is necessary to solve the problem of high-temperature protection for personnel and equipment during fire-fighting operations.

[0003] Current personal protective equipment (PPE) for workers consists of wearing fire-resistant suits, which offer limited protection against emergencies during wellhead operations. Emergency equipment primarily improves fire resistance and insulation by adding steel plates, asbestos insulation boards, and aluminum foil anti-reflective fabric, but this approach offers limited protection, poor high-temperature resistance, and short effective protection time, failing to meet the protection needs of emergency response sites. High-temperature, low-thermal-conductivity composite materials are new types of thermal insulation materials widely used in aerospace, energy, and metallurgical industries. Through structural design, they can simultaneously possess properties such as low thermal conductivity, flame retardancy, and heat radiation reflection. However, related materials, products, and technologies have not been effectively integrated with the needs of well blowout emergency response operations. Summary of the Invention

[0004] The purpose of this invention is to provide a high-temperature resistant composite board for well blowout emergency rescue that combines high structural strength, heat radiation resistance, and enhanced fireproof and heat insulation performance at high temperatures.

[0005] Therefore, the technical solution of the present invention is as follows:

[0006] A high-temperature resistant composite plate for well blowout emergency response is composed of a heat-reflective coating, a first alloy steel layer, an ultra-thin refractory fiber paper layer, an aerogel insulation felt layer, and a second alloy steel layer arranged sequentially. The heat-reflective coating is applied to the outer surface of the first alloy steel layer and is formed by curing a coating composed of micronized metal oxides, rare earth oxides, and a water-based adhesive. The micronized metal oxides are a mixture of titanium dioxide, spinel, and α-boron quartz with a particle size ≤5μm; the rare earth oxides are a mixture of yttrium oxide and lanthanum oxide with a particle size ≤5μm and a faceted structure; and the water-based adhesive... The adhesive is a high-temperature solid-phase curing adhesive; both the first and second alloy steel layers are made of austenitic stainless steel plates; the ultra-thin refractory fiber paper is a fiber layer woven from SiO2 crystalline fibers; the aerogel insulation felt is a felt material formed by blending SiO2 aerogel particles with asbestos, glass fiber, and crystalline SiO2 fibers; the ultra-thin refractory fiber paper and the aerogel insulation felt are stacked and sandwiched between the first and second alloy steel layers, and the circumferential edges of the first and second alloy steel layers are sealed into a whole by laser welding.

[0007] Furthermore, the thickness of the heat-reflective coating is 0.1–0.5 mm.

[0008] Furthermore, the heat-reflective coating is applied to the outside of the first alloy steel layer by spraying, roller brushing, or brushing.

[0009] Furthermore, the thickness of the first alloy steel layer and the second alloy steel layer is 1 to 3 mm.

[0010] Furthermore, the thickness of the ultrathin refractory fiber paper is 1–5 mm.

[0011] Furthermore, the ultrathin refractory fiber paper uses a fiber layer with a thermal conductivity of ≤0.026W / (m·K).

[0012] Furthermore, the aerogel insulation felt uses a felt material with a thermal conductivity of ≤0.02W / (m·K).

[0013] Compared with existing technologies, this high-temperature resistant composite plate for blowout emergency repairs achieves lightweight armor while maintaining structural strength at high temperatures through material selection, coating reinforcement, and structural design. It also enhances the heat radiation resistance of the protective armor surface, improves the overall fireproof and heat insulation performance, effectively improves the protection of equipment and personnel during blowout emergency repair operations, ensures operational safety, and increases emergency repair efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the high-temperature resistant composite plate for well blowout emergency response according to the present invention;

[0015] Figure 2 This is a schematic diagram showing the temperature change of the coating side of the high-temperature resistant composite plate for blowout emergency repair of the present invention after being heated by an oxy-acetylene flame for 1 hour on the side of the second alloy steel layer. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention.

[0017] Example 1

[0018] like Figure 1 As shown, the high-temperature resistant composite plate for blowout emergency repair is composed of a heat-reflective coating 1, a first alloy steel layer 2, an ultra-thin refractory fiber paper layer 3, an aerogel insulation felt layer 4, and a second alloy steel layer 5 arranged sequentially. The heat-reflective coating 1 is coated on the outer surface of the first alloy steel layer 2. The ultra-thin refractory fiber paper 3 and the aerogel insulation felt 4 are stacked and composited and then built into the first alloy steel layer 2 and the second alloy steel layer 5 as an inner lining. The edges of the first alloy steel layer 2 and the second alloy steel layer 5 are then sealed by laser welding.

[0019] The thickness of the heat-reflective coating 1 is 0.3 mm. Specifically, the heat-reflective coating 1 is a coating formed by curing a mixture of micronized metal oxides, rare earth oxides, and water-based binders. The micronized metal oxides are a mixture of titanium oxide, spinel, and α-boronite with a particle size ≤ 5 μm. The rare earth oxides are a mixture of yttrium oxide and lanthanum oxide with a particle size ≤ 5 μm and a faceted structure. The water-based binder is a high-temperature solid-phase curing type binder.

[0020] The heat-reflective coating 1 is applied to the outside of the first alloy steel layer 2 by spraying, roller brushing, or brushing. Its purpose is to effectively prevent the conduction of high-temperature thermo-electromagnetic waves, reduce the amount of radiant heat transfer, and lower the surface temperature of the object. The coating has a maximum temperature resistance of 1800℃. While providing reflection and shielding of infrared heat radiation for the outer layer of the protective armor, it also isolates oxidizing atmospheres and corrosive media, reduces high-temperature oxidation and corrosion of the material, and extends its service life.

[0021] The thickness of the first alloy steel layer 2 and the second alloy steel layer 5 is 2mm; both alloy steel layers are steel plates made of austenitic stainless steel by laser welding, which have the advantages of good mechanical properties at high temperature of 800℃ and high temperature resistance and corrosion resistance.

[0022] The ultra-thin refractory fiber paper layer 3 is a 2mm thick fiber layer woven from high-purity SiO2 crystalline fibers. This ultra-thin refractory fiber paper layer 3 is extremely thin and has a very low thermal conductivity of 0.026W / (m·K). It can withstand high temperatures up to 1200℃, effectively blocking high-temperature conduction. Combined with the high-temperature resistant first alloy steel layer 2, it can effectively shield the high temperature at the front end of the armor.

[0023] The aerogel insulation felt layer 4 is a soft felt material formed by combining SiO2 aerogel particles with various fibers through a special process. The aerogel particles are SiO2 aerogel particles prepared by a composite-modified sol-gel method, and the felt material is woven from a mixture of asbestos, glass fiber, and crystalline SiO2 fiber. This aerogel insulation felt layer has an extremely low thermal conductivity of 0.02 W / (m·K), and together with ultra-thin fire-resistant fiber paper, it forms an insulation lining that can block heat transfer for a long time.

[0024] The composite layer formed by stacking the refractory fiber paper 3 and the aerogel insulation felt 4 between the first alloy steel layer 2 and the second alloy steel layer 5 not only effectively isolates moisture, preventing the thermal conductivity of the internal insulation material from decreasing due to moisture, but also possesses sufficient structural strength. Furthermore, the ultra-thin refractory fiber paper 3 and the aerogel insulation felt 4 are both SiO2 fiber products with different morphologies. Their composite composition forms the armor lining, which not only withstands high temperatures and maintains its structure but also effectively prevents heat transfer, significantly reducing the temperature of the armor's back side when directly exposed to flames.

[0025] During use, this fireproof and high-temperature resistant composite panel can be made into various shapes of protective equipment as needed and processed to the corresponding size before being installed on the fire-facing surface of the equipment. When the armor is exposed to flames, the heat-reflective coating on the surface of the fireproof and high-temperature resistant composite panel can effectively reflect heat radiation, reducing the temperature rise of the object surface caused by absorbing heat radiation. The composite formed by the high-temperature resistant alloy steel shell and the internal interlayer can isolate the flames and hot air from the equipment to be protected, reducing convective heat transfer. Thus, the fireproof and high-temperature resistant composite panel has the properties of reducing heat radiation absorption, isolating convective heat transfer, and slowing down heat conduction. Moreover, the composite panel has a simple processing technology and the armor is lightweight.

[0026] like Figure 2 The diagram shows the temperature curve of the outer surface of the second alloy steel layer 5 of the fireproof and high-temperature resistant composite panel after it has been heated for 1 hour with the heat-reflective coating 1 facing the flame. Figure 2 As can be seen from the data, the temperature of the outer surface of the second alloy steel layer 5 increased from 25.8℃ to 72.8℃, with an average heating rate of 0.783℃ / min. Therefore, based on this, it can be inferred that the fireproof and high-temperature resistant composite plate has good heat insulation effect and can meet the design expectation, that is, the temperature of the back of the armor does not exceed 150℃ after being directly burned by a natural gas flame for 1 hour. In addition, the temperature curve also shows that the heating curve of the fireproof and high-temperature resistant composite plate tends to flatten out at around 40 minutes, indicating that the temperature rise rate gradually decreases at this time, which proves that the fireproof and high-temperature resistant composite plate can keep the temperature of the back of the armor at a low level for a long time.

[0027] Comparative Example 1

[0028] A high-temperature resistant composite board is composed of a first carbon steel layer, an aluminosilicate refractory fiber felt, and a second carbon steel layer arranged sequentially. The aluminosilicate refractory fiber felt is sandwiched between the first and second carbon steel layers, and the edges of the first and second carbon steel layers are sealed by laser welding. Although this high-temperature resistant composite board has excellent thermal insulation performance and is inexpensive, comprehensive testing revealed that the aluminosilicate fiber products are hygroscopic, and their thermal conductivity increases significantly when damp, affecting the overall thermal insulation performance. Simultaneously, the carbon steel is prone to corrosion in humid environments, leading to a reduction in the service life of the composite.

[0029] Comparative Example 2

[0030] A high-temperature resistant composite panel is composed of a fire-retardant coating, a first carbon steel layer, an aluminum silicate refractory fiber felt, and a second carbon steel layer arranged sequentially. The fire-retardant coating is applied to the outer surface of the first carbon steel layer, and the aluminum silicate refractory fiber felt is sandwiched between the first and second carbon steel layers. The edges of the first and second carbon steel layers are sealed by laser welding. The fire-retardant coating is a solvent-free epoxy intumescent fire-retardant coating. This high-temperature resistant composite panel, with the addition of a fire-retardant coating, significantly improves its temperature resistance, reaching 600℃. However, due to the heat insulation mechanism of this coating, it expands and carbonizes upon heating, forming a porous carbon structure insulation layer to block external heat, making it non-reusable.

Claims

1. A high-temperature resistant composite plate for well blowout emergency response, characterized in that, It is composed of a heat-reflective coating (1), a first alloy steel layer (2), an ultra-thin refractory fiber paper layer (3), an aerogel insulation felt layer (4), and a second alloy steel layer (5) arranged sequentially; wherein, the heat-reflective coating (1) is coated on the outer surface of the first alloy steel layer (2), which is formed by curing a coating made of micronized metal oxide, rare earth oxide and water-based adhesive; the micronized metal oxide is a mixture of titanium oxide, spinel and α-boron quartz with a particle size ≤5μm; the rare earth oxide is a mixture of yttrium oxide and lanthanum oxide with a particle size ≤5μm and a faceted structure; the water-based adhesive is a high-temperature solid-phase curing adhesive; The first alloy steel layer (2) and the second alloy steel layer (5) are both made of austenitic stainless steel. The ultra-thin refractory fiber paper layer (3) is a fiber layer woven from SiO2 crystalline fibers with a thickness of 1~5mm. The aerogel insulation felt layer (4) is a felt material formed by blending SiO2 aerogel particles with asbestos, glass fiber and crystalline SiO2 fiber. The ultra-thin refractory fiber paper layer (3) and the aerogel insulation felt layer (4) are stacked and sandwiched between the first alloy steel layer (2) and the second alloy steel layer (5), and the circumferential edges of the first alloy steel layer (2) and the second alloy steel layer (5) are sealed into a whole by laser welding.

2. The high-temperature resistant composite plate for well blowout emergency response according to claim 1, characterized in that, The thickness of the heat reflective coating (1) is 0.1~0.5mm.

3. The high-temperature resistant composite plate for well blowout emergency response according to claim 1, characterized in that, The heat-reflective coating (1) is applied to the outside of the first alloy steel layer (2) by spraying, roller brushing or brushing.

4. The high-temperature resistant composite plate for well blowout emergency response according to claim 1, characterized in that, The thickness of the first alloy steel layer (2) and the second alloy steel layer (5) is 1~3mm.

5. The high-temperature resistant composite plate for well blowout emergency response according to claim 1, characterized in that, The ultra-thin refractory fiber paper layer (3) uses a fiber layer with a thermal conductivity of ≤0.026W / (m·K).

6. The high-temperature resistant composite plate for well blowout emergency response according to claim 1, characterized in that, The aerogel insulation felt layer (4) uses a felt material with a thermal conductivity of ≤0.02W / (m·K).

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