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Small-thickness glass reinforced plastic chimney

A glass fiber reinforced plastic chimney and chimney technology, applied in the field of chimneys, can solve the problem of no large-scale thermal power plant FRP chimney engineering examples, etc., and achieve the effects of easy construction and quality control, long service life, and good hoop mechanical properties.

Active Publication Date: 2014-01-29
CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there are no engineering examples of FRP chimneys in large-scale thermal power plants in my country

Method used

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  • Small-thickness glass reinforced plastic chimney
  • Small-thickness glass reinforced plastic chimney
  • Small-thickness glass reinforced plastic chimney

Examples

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Effect test

preparation example Construction

[0068] The preparation method of FRP chimney of the present invention comprises the following steps:

[0069] (a) provide inner lining functional layer;

[0070] (b) laying the intermediate structural layer on the inner lining functional layer, and optionally

[0071] (c) laying the outer protective layer on the intermediate structural layer to obtain the glass fiber reinforced plastic chimney;

[0072] or include the following steps:

[0073] (a) providing an inner liner functional layer, an intermediate structural layer, and an optional outer protective layer;

[0074] (b) Assembling the inner lining functional layer, intermediate structural layer, and optional outer protective layer into the FRP chimney.

[0075] The fiberglass chimney of the present invention has one or more of the following features:

[0076] (1) The hoop tensile strength is greater than 235MPa, the modulus is greater than 19.0GPa, the axial tensile strength is greater than 110MPa, and the modulus is ...

Embodiment 1

[0171] The fiberglass chimney of this embodiment includes an inner lining functional layer, an intermediate structural layer and an outer protective layer, with a diameter of 7.2 meters.

[0172] Wherein, the lining functional layer includes a surface felt layer and a sprayed yarn layer from the inside to the outside, with a thickness of 1.2 mm.

[0173] The middle structural layer is composed of 4 structural sub-layers 1 from inside to outside, 2 additional structural single layers and 1 outermost structural single layer. The structure is S1-S1-F1-F2-S1-S1-Y1, with a total thickness of 14.2mm .

[0174] The outer protective layer is a gel coat layer with a thickness of 0.25mm.

Embodiment 2

[0176] The fiberglass chimney of this embodiment includes an inner lining functional layer, an intermediate structural layer and an outer protective layer, with a diameter of 7.2 meters.

[0177] Among them, the lining functional layer is composed of carbon fiber felt layer, surface felt layer and jet yarn layer from inside to outside, with a thickness of 1.5mm.

[0178] The structure of the middle structure layer from inside to outside is S1-S1-F1-S1-S2-F1-F2-S1-S4, and the total thickness of the middle structure layer is 16.5mm.

[0179] The outer protective layer is a gel coat layer with a thickness of 0.25mm.

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Abstract

The invention relates to a small-thickness glass reinforced plastic chimney. The chimney shaft wall comprises a lining functional layer, a middle structural layer and an optional outer protective layer, wherein the middle structural layer comprises a plurality of structural sub-layers from the inside to the outside of the glass reinforced plastic chimney. Each structural sub-layer consists of a structural single layer A, a structural single layer B, a structural single layer C and a structural single layer D, wherein the structural single layer A is a jet yarn layer or a unidirectional cloth layer. The structural single layer B does not exist or is an annular winding layer. The structural single layer C is a jet yarn layer or a unidirectional cloth layer. The structural single layer D is an annular winding layer. In addition, when the structural single layer A is the jet yarn layer, the structural single layer C is the unidirectional cloth layer; or when the structural single layer A is the unidirectional cloth layer, the structural single layer C is the jet yarn layer, and the thickness t of the middle structural layer is larger than or equal to 8 but smaller than 18mm. The small-thickness glass reinforced plastic chimney has good axial mechanical property and annular mechanical property, facilitates construction and quality control and is long in service life and suitable for a large thermal power plant.

Description

technical field [0001] The invention relates to a chimney, in particular to a low-thickness glass fiber reinforced plastic chimney. Background technique [0002] Fiber-reinforced plastics are high-performance composite materials formed with fibers and their products as reinforcing materials, synthetic resin as matrix materials, and a specific molding process. FRP (Glass Fiber Reinforced plastics, also known as glass fiber reinforced plastics, the internationally recognized abbreviation symbol is GFRP or FRP) is a kind of fiber reinforced plastics, which is a functional type made of synthetic resin and glass fiber through a composite process. Composite materials have excellent designability, processability and repairability. [0003] In the past, domestic FRP was mostly used for storage tanks and pipelines. Its material design focused on meeting product functions and did not require high mechanical properties. What needed attention was the hoop performance of FRP products, a...

Claims

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Application Information

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IPC IPC(8): E04H12/28
Inventor 干梦军黎大胜徐勍陈飞杨薇胡仕林侯锐钢姚楠
Owner CHINA POWER ENG CONSULTING GRP CORP EAST CHINA ELECTRIC POWER DESIGN INST
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