Sealing-installing method of blast furnace ironmaking tuyere big sleeve
A blast furnace ironmaking and installation method technology, applied in the tuyere and other directions, can solve problems such as damage to the blast furnace lining, poor sealing, gas overflow, etc., to achieve the effect of ensuring the accuracy of the angle and saving manpower
Active Publication Date: 2011-02-16
XINXING DUCTILE IRON PIPES CO LTD
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Problems solved by technology
Because the asbestos rope is difficult to be evenly wound on the sealing surface during installation, the gap between the large sleeve and the sealing flange of the large sleeve cannot be accurately controlled after installation, and the result of poor sealing often occurs after installation, causing a large amount of gas to escape to the outside during production. Personal safety brings great potential safety hazards, and even causes serious consequences of a large amount of gas overflowing and damaging the lining of the blast furnace
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[0016] As shown in the figure, a method for sealing and installing a large set of blast furnace ironmaking tuyere, which is composed of a sleeve body 3, is characterized in that: a sealing groove 1 is provided on the sealing surface of the sealing flange of the large blast furnace ironmaking tuyere, The sealing groove 1 has a depth of 5-7mm and a width of 10mm. The diameter of the outer cone surface of the large blast furnace ironmaking tuyere is 1mm smaller than the diameter of the corresponding connection flange 2 of the blast furnace ironmaking tuyere large sleeve. The installation steps are: ① Apply superglue evenly on the inner surface of the sealing groove, ②Cut out 10×10mm flexible graphite packing ropes with the same circumference as the inner and outer sealing grooves, ③Fill the cut flexible graphite packing ropes into the corresponding sealing grooves Inside, ④ apply sealing paint on the outer cone surface of the blast furnace ironmaking tuyere and the sealing surface...
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The invention discloses a blast furnace ironmaking tuyere big sleeve, which consists of a sleeve body, wherein sealing grooves are arranged on the sealing surface of a sealing flange of the blast furnace ironmaking tuyere big sleeve, and the diameter of the outer conical surface of the blast furnace ironmaking tuyere big sleeve is smaller than that of a part corresponding to a connection flange of the blast furnace ironmaking tuyere big sleeve, which is fixedly connected with a furnace shell. Installation steps comprises: (1) evenly smearing super glue on the inner surface of the sealing groove; (2) cutting out 10*10 mm of flexible graphite packing ropes with the same perimeter with inner sealing grooves and outer sealing grooves respectively, (3) padding the corresponding sealing grooveswith the cut flexible graphite packing ropes; (4) smearing sealing paint on the outer conical surface and flange-sealing surface of the blast furnace ironmaking tuyere big sleeve; and (5) stuffing the blast furnace ironmaking tuyere big sleeve coated with the sealing paint into the connection flange of the blast furnace ironmaking tuyere big sleeve, connecting an fixing the two through bolts. Theblast furnace ironmaking tuyere big sleeve and the sealing-installing method thereof solve the problem of air leakage.
Description
technical field [0001] The invention relates to an ironmaking blast furnace, in particular to a method for sealing and installing the large sleeve of the ironmaking tuyere of the blast furnace. Background technique [0002] The blast furnace is a closed metallurgical equipment with high temperature and high pressure physical and chemical changes. The installation of the large tuyere set is to weld the large set of tuyere sealing flanges on the blast furnace shell, and then insert the large set of tuyere into the large set of sealing flanges and connect them with bolts. At the same time, the large sleeve and the large sleeve sealing flange are sealed by the conical surface; because welding will cause local deformation of the flange sealing surface, traditionally, asbestos rope and glass water are filled between the large sleeve and the sealing flange to make up for the welding. defect. Because the asbestos rope is difficult to be evenly wound on the sealing surface during in...
Claims
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IPC IPC(8): C21B7/16
Inventor 张树勋王素新赵新庆
Owner XINXING DUCTILE IRON PIPES CO LTD