High temperature compensator

Abstract

The invention discloses a high temperature compensator, belonging to the corrugated metal pipe field. The mainbody of the high temperature compensator is welded by a flange, a connecting pipe and a corrugated pipe. The high temperature compensator is internally provided with a lining pipe and the middle section gap of the lining pipe is provided with a telescopic ring which is composed of a guide cylinder, a guide cylinder annular plate, a sleeve and a sleeve annular plate. The guide cylinder and the sleeve are made of antioxidation and heat resistant steel material; the clearance of the overlapping part between the guide cylinder and the sleeve is ranging from 5mm to 20mm; a high temperature resistance and heat insulation material is filled in a chamber at the external side of the lining pipe and a chamber of the telescopic ring; the internal side of the lining pipe is poured by high temperature fireclay. The high temperature compensator can resist high temperature, has a plurality of larger displacement compensation quantity, long service life, is especially suitable for the displacement compensation of blast furnace air supply devices used for ironmaking in a steel plant and other high temperature medium delivery sites, and makes obvious progress compared with the existing compensators.

Description

technical field [0001] The invention relates to a metal bellows compensator, in particular to a high-temperature compensator used in an ironmaking blast furnace air supply device of a steel plant or other high-temperature medium conveying devices. Background technique [0002] Metal bellows compensators are widely used in important industries such as electric power, metallurgy, chemical industry, construction, food, pharmaceuticals, etc. to compensate the axial and lateral displacement of the pipeline system due to thermal expansion and contraction. For ironmaking blast furnace air supply devices and other high-temperature medium transportation occasions, high-temperature compensators with high temperature resistance and large compensation must be used. At present, such high-temperature compensators are rare. Patent No. 200320105101.2 discloses a high-temperature compensator for tertiary air ducts in the cement industry. A high-temperature-resistant heat-insulating material ...

AI Technical Summary

Problems solved by technology

However, the compensator still has the following defects according to its disclosed content: 1. The overlapping part of the two inner liner pipes is equipped with a sealing ring, and there is basically no gap, so that the mutual movement is restricted, which affects the compensation performance of the compensator, especially the lateral compensation amount Very small, and seals cannot be replaced when they are aged or damaged

2. The filling at one end of the high temperature resistant castable is directly in contact with the high temperature medium, which is easy to damage and fall off, thus reducing the service life of the compensator

Images