A composite material chimney connection node and method

Abstract

The invention discloses a composite material chimney connection node, which comprises a first arc-shaped stabbing board, a second arc-shaped stabbing board, an epoxy resin adhesive layer, a composite material fiber cloth layer and a C-shaped clamp. Also disclosed is a composite material chimney connection method. The composite material chimney connection node and method of the present invention have the following advantages: the curved splints are firmly anchored together with the composite material chimney barrel through steel thorns and epoxy resin glue, which can provide sufficient node strength for the structure, making the node area It will no longer be the weak link of the structure, and it will also help promote the application of the composite material chimney towards the direction of becoming an independent structure; the composite material fiber cloth wrapped around the periphery tightly holds and wraps the discrete arc-shaped spines together, It improves the integrity of the structure, prevents the thorns from being pulled out when the curved thorn board is stressed, further improves the strength of the joint, reduces the direct contact area between the curved thorn board and the outside world, and reduces the anticorrosion cost of the curved thorn board.

Description

technical field [0001] The invention belongs to the technical field of heavy anticorrosion, and relates to a composite material chimney connection node and a method, which are used for the connection of composite material chimneys in industries such as thermal power plants and metallurgy. Background technique [0002] In order to reduce the emission of sulfur dioxide and obtain clean electric energy, domestic and foreign power companies generally adopt flue gas desulfurization technology. Among them, limestone-gypsum wet desulfurization without flue gas heat exchanger (GGH) is still the current dominant process scheme. The resulting flue gas has a temperature of about 50° and a high moisture content, which is called wet flue gas. The wet flue gas condenses in the chimney to form condensed acid, which greatly enhances the corrosion of the chimney, which makes people put forward higher requirements for the structure of the chimney and the anti-corrosion performance of the lin...

AI Technical Summary

Problems solved by technology

Composite material flange connection has the advantages of convenient installation and reducing the amount of high-altitude operations; however, composite material flanges are all laminated with molds, which are brittle materials, and the ability to eliminate stress is poor, and stress concentration at the root of the flange is easy to cause cracking and damage , many composite material flanges will partially crack when the high-strength bolts are pre-tightened, and the bolts cannot be pre-tightened as much as possible like steel flanges to ensure the sealing of the interface without damaging the flange; in addition, the flange There are bolt holes on the top, and the bolt holes need to be connected during installation, which increases the number of high-altitude turnover and hoisting

The taper socket connection also has the advantages of convenient installation and reduced overhead work; however, the requirements for the fixing and guiding support of the chimney support are relatively high, and each chimney has at least one fixed support, and this kind of connection cannot well complete the external interface connection

Compared with the other two traditional connection forms, hand lay-up butt jointing is simple in construction, has more overlapping areas, and has better joint strength, so it is the most used connection method; Difficult to operate, need to set up a special construction platform

Images