Thermal insulation composite layer structure for high-temperature steam pipeline and buried pipeline

Abstract

An embodiment of the utility model provides a thermal insulation composite layer structure for a high-temperature steam pipeline and a buried pipeline, which relates to the technical field of pipelines and comprises a thermal insulation pipe body, the thermal insulation pipe body comprises a first fiber layer and a second fiber layer, and interlayer portions are arranged in the middles of the first fiber layer and the second fiber layer. The first fiber layer and the second fiber layer which are arranged on the two sides of the interlayer part are fixedly connected, the heat preservation pipe body is composed of the first fiber layer, the second fiber layer and the interlayer part, the composite difficulty is small, the weight is light, the mechanical property and stability are good, and the composite material has the advantages of being light in weight, good in heat conductivity coefficient, free of falling powder and good in heat insulation performance. The aerogel powder can be effectively prevented from losing and escaping in a long-time vibration environment, the mechanical property and the stability of the aerogel powder are effectively maintained, the service life of the thermal insulation material is prolonged, the use requirements of the thermal insulation material in thermal insulation protection components such as steam pipelines, directly-buried pipelines, automobiles, steamships and aviation can be met, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline technical field especially is related to a heat preservation composite layer structure for high temperature steam pipeline and buried pipeline. BACKGROUND

[0002] Pipeline heat preservation is the protection technology for avoiding condensation or freezing of pipeline conveying medium. For general oil (gas) pipeline, the most commonly used method is to add a heat preservation layer outside the pipeline, and the heat preservation layer is pressed into shape by closed-cell rigid polyurethane foam and is protected by a skin. Because aerogel material itself has excellent heat insulation performance, it is currently widely used in the field of high temperature steam pipeline and buried pipeline protection.

[0003] Because the nanometer aerogel material contains a large amount of dust, it causes health risks to workers who inhale the dust into their lungs. In addition, the large amount of dust in the nanometer aerogel material is easily scattered under the conditions of long-term vibration and exposure, which ultimately affects the original thermal conductivity parameter and reduces various performance of heat preservation and insulation. SUMMARY

[0004] The utility model discloses a heat preservation composite layer structure for high temperature steam pipeline and buried pipeline, which can avoid the problem that a large amount of dust in the nanometer aerogel material is easily scattered under the conditions of long-term vibration and exposure, which ultimately affects the original thermal conductivity parameter.

[0005] The utility model provides a heat preservation composite layer structure for high temperature steam pipeline and buried pipeline, which comprises:

[0006] The heat preservation pipe body comprises a first fiber layer and a second fiber layer for supporting the heat preservation pipe body, and a middle part of the first fiber layer and the second fiber layer is provided with a interlayer part, and the interlayer part is fixedly connected with the first fiber layer and the second fiber layer on both sides.

[0007] The interlayer part is provided with felt on both sides, and the felt on both sides of the interlayer part made of nanometer aerogel is heated and pressed and combined with the first fiber layer and the second fiber layer made of glass fiber cotton.

[0008] Preferably, the first fiber layer and the second fiber layer are made of glass fiber material.

[0009] Preferably, the interlayer part is made of nanometer aerogel material.

[0010] Preferably, the first fiber layer and the second fiber layer are combined with the interlayer part by hot pressing.

[0011] Preferably, the outer part of the heat preservation tube body is provided with a protective sleeve, the protective sleeve comprises a hard protective layer arranged outside the heat preservation tube body, the outer part of the hard protective layer is provided with a foam layer, and the outer part of the foam layer is provided with a metal foil layer.

[0012] Preferably, the hard protective layer is made of calcium silicate material.

[0013] Preferably, the foam layer is made of polyurethane material.

[0014] Preferably, the foam layer is wrapped outside the hard protective layer, and the hard protective layer is inlaid in the inner part of the groove inside the foam layer.

[0015] The heat preservation composite layer structure for the high-temperature steam pipeline and the buried pipeline is composed of the first fiber layer, the second fiber layer and the interlayer part, has small composite difficulty, light quality, good mechanical properties and stability, has light quality, good thermal conductivity, no powder falling, good heat insulation performance, can effectively prevent aerogel powder from flowing and escaping in a long-time vibration environment, effectively maintains the mechanical properties and the stability, prolongs the service life of the heat preservation material, meets the use requirements in the steam pipeline, the direct-buried pipeline, the automobile, the ship, the aviation and other heat insulation protection components, and has wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment, it should be understood, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the range, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0017] Figure 1 It is the overall structure schematic diagram of the embodiment of the utility model.

[0018] Figure 2 It is the heat preservation tube body structure schematic diagram of the embodiment of the utility model.

[0019] Figure 3 It is the heat preservation tube body split structure schematic diagram of the embodiment of the utility model.

[0020] Figure 4 It is the heat preservation tube body plane structure schematic diagram of the embodiment of the utility model.

[0021] Figure 5 It is the protective sleeve structure schematic diagram of the embodiment of the utility model.

[0022] Figure 6 It is theFigure 5 Enlarged structure schematic view at middle A.

[0023] BRIEF DESCRIPTION OF DRAWINGS: 100, protective sleeve; 110, hard protective layer; 120, foam layer; 130, metal foil layer; 200, heat preservation pipe body; 300, first fiber layer; 400, interlayer part; 500, second fiber layer. DETAILED DESCRIPTION

[0024] Hereinafter, only certain exemplary embodiments are simply described. As can be appreciated by those skilled in the art, the described embodiments can be modified in various different manners without departing from the spirit or scope of the embodiments of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0025] In the description of the embodiments of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0027] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0028] The disclosure below provides many different implementations or examples to implement different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can refer to the same reference numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or settings discussed.

[0029] In order to better understand the purpose, structure and function of the present application, the present application for high temperature steam pipeline and buried pipeline heat preservation composite layer structure is further described in detail below in combination with the drawings.

[0030] As shown in Figures 1-6 The embodiments of the present application provide a heat preservation composite layer structure for high temperature steam pipeline and buried pipeline, which comprises a heat preservation pipe body 200 for protecting and heat preserving the internal pipeline, the heat preservation pipe body 200 comprises a first fiber layer 300 and a second fiber layer 500 for supporting the heat preservation pipe body 200, the middle part of the first fiber layer 300 and the second fiber layer 500 is provided with a interlayer part 400 for enhancing stability, and the interlayer part 400 is fixedly connected with the first fiber layer 300 and the second fiber layer 500 on both sides.

[0031] The heat preservation pipe body 200 is composed of the first fiber layer 300, the second fiber layer 500 and the interlayer part 400, which has small composite difficulty, light quality, good mechanical properties and stability. The composite material has light quality, good thermal conductivity, no powder falling, good heat insulation performance, can effectively prevent aerogel powder loss and flying in long time vibration environment, effectively maintain mechanical properties and stability, prolong the service life of the heat preservation material, meet the use requirements in steam pipeline, direct buried pipeline, automobile, ship, aviation and other heat insulation protection components, and has wide application range.

[0032] The first fiber layer 300 and the second fiber layer 500 are made of glass fiber material, and the high performance inorganic material has the advantages of excellent mechanical properties, corrosion resistance, high temperature resistance and good insulation.

[0033] The glass fiber cotton of the first fiber layer 300 and the second fiber layer 500 comprises: 52-56% of SiO2; 12-16% of Al2O3; 15%-25% of CaO; 3-9% of B2O3; 1-4wt% of MgO; 0-1% of K2O, Na2O; 0.05-0.4% of Fe2O3.

[0034] The interlayer part 400 is made of nano aerogel material.

[0035] The nanometer aerogel material of the interlayer part 400 comprises 40-60% glass fiber cotton and 40-60% silicon dioxide aerogel.

[0036] The total amount of the first fiber layer 300 and the second fiber layer 500 is not more than 66 wt%, and the total amount of the interlayer part 400 is not more than 33 wt%.

[0037] The first fiber layer 300 and the second fiber layer 500 are connected with the interlayer part 400 by hot pressing and compounding, and in the hot pressing and compounding process, the glass fiber cotton and the nanometer aerogel material can be fused and cooled and bonded and compounded by glue.

[0038] The two sides of the interlayer part 400 are arranged with felt, and the felt on the two sides of the interlayer part 400 made of nanometer aerogel is heated and pressed and compounded with the first fiber layer 300 and the second fiber layer 500 made of glass fiber cotton, facilitating the compounding and avoiding separation.

[0039] The product sample is detected, and the specific performance parameters are as follows:

[0040] Thermal conductivity at 25℃: ≤0.0257 W / (m·K);

[0041] Density: 130±20 kg / m3.

[0042] The outer part of the heat preservation pipe body 200 is provided with a protective pipe sleeve 100 for protecting the heat preservation pipe body 200, the protective pipe sleeve 100 includes a hard protective layer 110 arranged on the outer side of the heat preservation pipe body 200 for protecting the inside, the outer side of the hard protective layer 110 is provided with a foam layer 120 for buffering and protecting the outer hard protective layer 110, and the outer side of the foam layer 120 is provided with a metal foil layer 130 for protecting the inside foam layer 120.

[0043] The foam layer 120 is wrapped outside the hard protective layer 110, and the hard protective layer 110 is embedded and arranged inside the slot of the foam layer 120, the foam layer 120 can protect the inside hard protective layer 110, the outer foam layer 120 is soft, buffers and blocks external substances, avoids cracking of the internal hard pipe caused by damage, the metal foil layer 130 is arranged outside, has high reflectivity, can effectively reflect most of the incident infrared radiation, improves the overall heat insulation efficiency of the heat preservation material, can be used as an effective moisture-proof layer to prevent moisture from penetrating into the heat preservation material, avoids performance degradation and service life shortening caused by moisture, and increases the physical strength of the foam layer 120, and is more durable.

[0044] The hard protective layer 110 can be made of calcium silicate material, has good heat insulation performance, wide temperature resistance range, and is suitable for heat insulation of steam pipes.

[0045] The foam layer 120 can be made of polyurethane material, the polyurethane foam material shell has good heat insulation performance and high compression strength, and is suitable for underground environment.

[0046] The working principle of the heat preservation composite layer structure for high-temperature steam pipes and buried pipes is as follows: the heat preservation pipe body 200 is composed of the first fiber layer 300, the second fiber layer 500 and the interlayer 400, the composite difficulty is small, the weight is light, the mechanical properties and stability are good, the composite material has the advantages of light weight, good thermal conductivity, no powder falling, good heat insulation performance, can effectively prevent aerogel powder loss and flying in a long-time vibration environment, and can effectively maintain the mechanical properties and stability, prolong the service life of the heat preservation material, meet the use requirements in steam pipes, direct-buried pipes, automobiles, ships, aviation and other heat insulation protection components, and has a wide application range.

[0047] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model.In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model.Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A thermal insulation composite layer structure for high-temperature steam pipes and buried pipes, characterized by, Include: The heat preservation tube body (200) includes a first fiber layer (300) and a second fiber layer (500) for supporting the heat preservation tube body (200), and the middle part of the first fiber layer (300) and the second fiber layer (500) is provided with a sandwich part (400), and the sandwich part (400) is fixedly connected with the first fiber layer (300) and the second fiber layer (500) on both sides; The sandwich part (400) is arranged with felt on both sides, and the sandwich part (400) is made of nano aerogel. After heating, the felt on both sides is pressed and compounded with the first fiber layer (300) and the second fiber layer (500) made of glass fiber cotton.

2. A thermal insulation composite structure for high temperature steam pipes and buried pipes according to claim 1, characterized in that, The first fiber layer (300) and the second fiber layer (500) are made of glass fiber material.

3. A thermal insulation composite structure for high temperature steam pipes and buried pipes according to claim 2, characterized in that, The sandwich part (400) is made of nano aerogel material.

4. A thermal insulation composite structure for high temperature steam pipes and buried pipes according to claim 3, characterized in that, The connection mode of the first fiber layer (300) and the second fiber layer (500) and the sandwich part (400) is hot pressing composite.

5. A thermal insulation composite structure for high temperature steam pipes and buried pipes according to claim 4, characterized in that, The outer part of the heat preservation tube body (200) is provided with a protective sleeve (100), and the protective sleeve (100) includes a hard protective layer (110) arranged outside the heat preservation tube body (200), a foam layer (120) arranged outside the hard protective layer (110), and a metal foil layer (130) arranged outside the foam layer (120).

6. A thermal insulation composite structure for high temperature steam pipes and buried pipes according to claim 5, characterized in that, The hard protective layer (110) can be made of calcium silicate material.

7. A thermal insulation composite structure for high temperature steam pipes and buried pipes according to claim 6, characterized in that, The foam layer (120) can be made of polyurethane material.

8. A thermal insulation composite structure for high temperature steam pipes and buried pipes according to claim 7, characterized in that, The foam layer (120) is coated outside the hard protective layer (110), and the hard protective layer (110) is embedded and arranged inside the slot of the foam layer (120).

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