High-temperature and high-pressure steam pipe network elbow aerogel coiled material heat preservation prefabricated structure

Abstract

The utility model discloses an aerogel coiled material prefabricated heat preservation structure for a high-temperature and high-pressure steam pipe network elbow, relates to technical application of heat preservation structures, and belongs to the technical field of energy conservation and low carbon. The aerogel prefabricated heat-insulation composite board comprises an aerogel prefabricated heat-insulation layer, a fastening belt and an outer protective layer. The aerogel coiled material prefabricated heat preservation layers are prefabricated by aerogel heat preservation coiled materials in batches according to the standard bend shape, the two aerogel coiled material prefabricated heat preservation layers are laid on a universal bend, the thickness of each aerogel coiled material prefabricated heat preservation layer is 30 mm, joints of the two aerogel heat preservation composite structures are arranged in a staggered mode, and the two aerogel heat preservation composite structures are arranged in a staggered mode. 45-degree notches of the same layer of aerogel heat preservation composite structures are connected. Construction joints at the elbows are remarkably reduced, the loss of aerogel coiled material blanking materials is reduced, the construction difficulty of the fishbone type elbows on site is reduced, heat is prevented from being transferred outwards through the joints, meanwhile, the device further comprises a fastening belt used for binding and fixing the composite aerogel heat preservation materials, the construction time is saved, and the heat preservation effect of the steam pipeline is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation structures, in particular to a high-temperature and high-pressure steam pipe network elbow aerogel coil thermal insulation prefabricated structure, belonging to the technical field of energy conservation and low carbon. Background Art

[0002] Currently, the high- and medium-pressure steam temperatures in steam pipelines range from 350°C to 500°C, ensuring sufficient temperatures for production and daily life. Traditional steam pipeline elbow insulation structures are relatively simple, employing a herringbone-style cutting method with layers of wrapping, wrapping, and bundling. This makes construction difficult, time-consuming, and wastes a lot of insulation material. Furthermore, elbows have numerous joints and uneven gaps, which continuously radiate heat outward from the steam pipeline, resulting in significant heat loss and a significant waste of thermal energy resources. Steam pipelines are special equipment pressure pipelines and are subject to annual spot inspections at a fixed rate. The removal and restoration of steam pipeline elbows is complex and time-consuming, effectively reducing safety hazards associated with high-temperature construction operations.

[0003] Therefore, there is a need for a high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure that can effectively overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure for reducing energy loss, reducing insulation material waste, and improving resource utilization efficiency.

[0005] The object of the present invention is achieved through the following technical solutions.

[0006] The utility model discloses a prefabricated aerogel coil insulation structure for high-temperature, high-pressure steam pipe network elbows, comprising a prefabricated aerogel coil insulation layer, a fastening tape, and an outer sheath. The prefabricated aerogel coil insulation layer comprises two layers of aerogel insulation felt arranged with staggered seams. The fastening tape is fixed to the composite insulation structure to control the seam gap. The outer sheath is made of 0.8mm aluminum sheet and wrapped around the outermost layer of the aerogel prefabricated insulation layer to stabilize the aerogel prefabricated insulation layer and ensure thermal insulation effectiveness.

[0007] Preferably, the aerogel membrane prefabricated insulation layer for high-temperature, high-pressure steam pipe network elbows is prefabricated in batches according to standard elbow shapes. Universal elbows are laid with two layers of aerogel membrane prefabricated insulation layer, each 30mm thick. The joints of the two layers of aerogel insulation composite structure are staggered, and the same layer of aerogel insulation composite structure is connected at a 45-degree incision. The aerogel membrane itself has Class A fire resistance and is added with a water repellent agent.

[0008] Further preferably, the aerogel insulation layer uses a glass fiber-based aerogel coil with a thickness of 30 mm. The thermal conductivity of the material is ≤0.021 W / mK under normal conditions, the insulation thickness is much smaller than that of traditional rock wool insulation materials, the tensile strength is greater than 200 kPa, the compression rebound rate is ≥90%, the compression strength is ≥80 kPa, the maximum operating temperature is greater than 650 ° C, and the hydrophobic effect reaches 99.99%. The aerogel prefabricated insulation layer guarantees the above performance indicators under high temperature conditions.

[0009] Preferably, the high-temperature, high-pressure steam pipe network elbow aerogel material insulation prefabricated structure of the present invention includes a fastening belt for binding and fixing the aerogel insulation layer, further reducing the joint gap of the insulation prefabricated structure and ensuring the insulation effect.

[0010] Further preferably, the fastening belt is a fastening steel belt.

[0011] Preferably, the high-temperature, high-pressure steam pipe network elbow aerogel material insulation prefabricated structure of the present invention also includes an outer protective layer for protecting the aerogel insulation material, which is rainproof, snowproof and corrosion-resistant.

[0012] Further preferably, the outer protective layer is made of 0.8 mm aluminum plate, which is wrapped around the outermost layer of the aerogel prefabricated insulation layer. The aluminum plate has good ductility and corrosion resistance, which protects the aerogel prefabricated insulation layer from running stably.

[0013] Beneficial effects:

[0014] 1. The utility model discloses a prefabricated aerogel coil insulation structure for high-temperature and high-pressure steam pipe network elbows, which is mainly composed of a prefabricated aerogel coil insulation layer, a fastening belt, and an outer protective layer. The prefabricated aerogel coil insulation layer is prefabricated in batches by aerogel insulation coils according to the standard elbow shape. The universal elbow is laid with two layers of aerogel insulation prefabricated structure. The joints of the two layers of aerogel insulation composite structure are staggered with each other, and the same layer of aerogel insulation composite structure is connected at a 45° incision, which significantly reduces the layer-by-layer bundling and overlapping seams, and prevents heat from being transferred outward through the seams.

[0015] 2. The utility model has a prefabricated aerogel coil insulation structure for high-temperature and high-pressure steam pipe network elbows. The prefabricated insulation layer of the aerogel coil is directly assembled and installed, which completely changes the traditional fishbone cutting of aerogel felt, reduces the difficulty of on-site insulation operations, saves construction time, and reduces safety hazards in high-temperature construction operations.

[0016] 3. The utility model has a prefabricated structure of aerogel coil insulation for high-temperature and high-pressure steam pipe network elbows. The prefabricated insulation layer of aerogel coil is directly assembled and installed, which reduces the number of structural joints, greatly reduces the loss of fishbone-type material cutting, effectively reduces the waste of aerogel coil cutting, and saves the amount of aerogel coil material.

[0017] 4. The high-temperature, high-pressure steam pipe network elbow aerogel material insulation prefabricated structure of the utility model further reduces the joint gap of the insulation prefabricated structure and ensures the insulation effect by using the fastening belt used to bind and fix the aerogel insulation layer.

[0018] 5. The high-temperature, high-pressure steam pipe network elbow aerogel material insulation prefabricated structure of the utility model can reduce the impact of external environmental factors such as rain, snow, and corrosion on the insulation prefabricated material structure through the outer protective layer used to protect the aerogel insulation material. The aluminum plate has good ductility, and the connection between the steam pipeline elbow and the straight pipe section is natural and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the prefabricated structure of aerogel membrane insulation for high-temperature and high-pressure steam pipeline elbows.

[0020] Figure 2 This is a schematic diagram of the cross-section of the prefabricated structure of aerogel membrane insulation for high-temperature and high-pressure steam pipeline elbows.

[0021] Among them: 1—aerogel coil prefabricated insulation layer, 2—fastening belt, 3—outer protective layer, 4—pipeline elbow. DETAILED DESCRIPTION

[0022] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified with reference to exemplary embodiments.

[0023] like Figure 1 、 2 As shown, the high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure of the present invention mainly consists of three parts: aerogel coil prefabricated insulation layer 1, a fastening belt 2, and an outer protective layer 3.

[0024] The aerogel coil prefabricated insulation layer 1 is a nano-aerogel insulation coil prefabricated in batches according to the standard elbow shape, with a thickness of 30 mm, a thermal conductivity of ≤0.021 W / mK in normal state, a tensile strength of >200 kPa, a compression rebound rate of ≥90%, a compression strength of ≥80 kPa, a maximum operating temperature of >650°C, and a hydrophobic effect of 99.99%. Each elbow is laid with two layers of aerogel coil prefabricated insulation layers, the joints of the two layers of aerogel insulation composite structure are staggered with each other, and the same layer of aerogel insulation composite structure is connected at a 45° incision, which can meet the production working conditions requirements of high-temperature and high-pressure steam pipeline elbows.

[0025] The fastening belt 2 is tied and fixed on the surface of the aerogel coil prefabricated thermal insulation layer 1, further reducing the seam gap of the aerogel prefabricated thermal insulation layer and ensuring the thermal insulation effect.

[0026] The outer protective layer 3 is fixed to the outermost surface of the aerogel coil prefabricated thermal insulation layer 1, and protects the aerogel coil prefabricated thermal insulation layer 1 from running stably through the good ductility and corrosion resistance of the aluminum plate.

[0027] The above specific description further illustrates the purpose, technical solutions and beneficial effects of the invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure, characterized by: It comprises an aerogel coil prefabricated thermal insulation layer (1), a fastening belt (2), and an outer protective layer (3); The fastening belt (2) is tied and fixed on the surface of the aerogel coil prefabricated thermal insulation layer (1); and the outer protective layer (3) is fixed on the outer surface of the aerogel coil prefabricated thermal insulation layer (1).

2. The high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure according to claim 1, characterized in that: The aerogel coil prefabricated insulation layer (1) is prefabricated in batches according to the standard elbow shape, and the universal elbow is paved with (2) layers of aerogel coil prefabricated insulation layers, each layer having a thickness of 30 mm. The joints of the two layers of aerogel insulation composite structures are staggered with each other, and the same layer of aerogel insulation composite structures are connected at a 45° incision; the aerogel coil itself has Class A fireproof performance and is added with a water repellent.

3. The high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure according to claim 2, characterized in that: The aerogel coil prefabricated insulation layer (1) is made of a glass fiber-based aerogel material, the thermal conductivity of the material is ≤0.021W / mK in normal conditions, the insulation thickness is much smaller than that of traditional rock wool insulation materials, the tensile strength is greater than 200kPa, the compression rebound rate is ≥90%, the compression strength is ≥80kPa, the maximum operating temperature is greater than 650°C, and the hydrophobic effect reaches 99.99%.

4. The high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure according to claim 2 or 3, characterized in that: The fastening belt (2) is used to bind and fix the aerogel coil prefabricated thermal insulation layer (1), tighten the aerogel coil prefabricated thermal insulation layer (1), and further reduce the joint gap of the thermal insulation prefabricated structure.

5. The high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure fastening belt (2) as claimed in claim 4, characterized in that: The fastening belt (2) is a fastening steel belt.

6. The high-temperature, high-pressure steam pipe network elbow aerogel coil insulation prefabricated structure according to claim 3 or 5, characterized in that: The outer protective layer (3) is made of 0.8 mm aluminum plate, which is wrapped around the outermost layer of the aerogel coil insulation material (1) to prevent rain, snow and corrosion, and protect the aerogel coil insulation prefabricated structure to operate stably. The ductility of the aluminum plate is used to make the connection between the steam pipeline elbow and the straight pipe section natural and beautiful.

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