CN2184699Y

CN2184699Y - Cupric plate through-flow wind inlet

Info

Publication number: CN2184699Y
Application number: CN 93228099
Authority: CN
Inventors: 刘宝瑄; 蔡铁都; 刘葆蘅; 尹光宝; 王汉斌; 刘洪庆; 谢永喜; 张凯
Original assignee: REPAIRING ENGINEERING Co BENXI CITY Co
Current assignee: REPAIRING ENGINEERING Co BENXI CITY Co
Priority date: 1993-05-06
Filing date: 1993-05-06
Publication date: 1994-12-07
Anticipated expiration: 2003-05-06

Abstract

The utility model relates to a copper plate through-flow wind opening for blast furnaces, which is made of pure copper plates. The maximum flow rate of cooling water at one end part is 14m/s, and the thicknesses of cylinder bodies and end part structures are unequal. The end part of an outer cylinder and the welding part of an inner cylinder and the outer cylinder are welded with titanium alloy wear layers. The utility model has the advantages of good heat conducting property, no leakage of weld joint, heat transfer condition improvement, impact and wear resistance increase and long service life.

Description

Cupric plate through-flow wind inlet

The utility model copper coin throughflow tuyere belongs to the blast-furnace smelting support equipment.

At present, the blast-furnace smelting comparatively advanced air port of using is throughflow tuyere.Because throughflow tuyere has been taked rational two-chamber multicell structure, and the air port life-span is improved a lot than cavity type air port.But this air port is copper casting combination, thereby heat conductivility is not ideal enough, and composite welds leaks, and exists anti-washing away and the problem of wear resistance difference in addition.

Goal of the invention of the present utility model is to solve the problem that exists in the general throughflow tuyere, and then makes a kind of long-lived air port, to reduce furnace body wind rate, improves combustion intensity and pig iron output.

The thermal conductivity of copper is relevant with its purity and Chemical Composition.The purity of cast copper is generally at 95%-98%, and thermal conductivity is 186-209W/mk, and 99.9% fine copper plate thermal conductivity is 360W/mk.Thereby the utility model adopts the high purity copper coin to make the air port parts, by weldprocedure, each parts Combination Welding is become the copper coin throughflow tuyere then, thermal conductivity is further improved, and solved the problem of weld leakage.

The life-span in air port remove with heat conductivility mutually outside the Pass, heat transfer condition and antiwear property also are important factors, the thin and thick of air port wall closely links to each other with these factors.Wall is thin can to improve heat transfer, reduces the workpiece temperature of air port outer wall rapidly.Wall thickness can be wear-resistant, helps the branch sink flows, alleviates thermal shocking.The advantage of comprehensive air port wall thin and thick, urceolus of the present utility model end and barrel have designed the different structure wall thickness, the end wall thickening.In addition in the urceolus end and this key position built-up welding of inside and outside tube weld the titanium alloy anti abrasion layer.Improve heat transfer condition, improved the air port antiwear property.

The utility model copper coin throughflow tuyere is compared with general throughflow tuyere, has good heat conductivity, and the weldquality height anti-ly washes away, wear-resistant, advantage that the life-span is long.

Fig. 1 is the sectional view of the utility model copper coin throughflow tuyere.

Flange (1) and inner tube wall (3) one ends, flange (1) and outer tube wall (7) one ends, inner tube wall (3) other end is respectively to be connected by weld seam with outer tube wall (7) other end. Inner tube wall (3), outer tube wall (7) and urceolus end (6) and flange (1) formation cavity. Spiral weather board (4) places and forms two-chamber multicell structure in the cavity. The water of 1MP during work, by flow-guiding structure inner chamber (2), direct projection is to cupric plate through-flow wind inlet end (6), and is right Rotating to successively another inner chamber (12) along diversion chamber (8,9,10,11) afterwards discharges at last. Urceolus end (6) and inside and outside tube weld built-up welding titanium alloy wearing layer (5).

The utility model embodiment: the utility model design end, air port water coolant Peak Flow Rate 14m/s.Make each parts of air port with 99.9% fine copper plate.Urceolus end wall thickness is 20-30mm, inside and outside tube barrel wall thickness 10-14mm, and the copper coin air port parts Combination Welding that spiral guide water board 3-4mm will make moulding is an one.Urceolus end and the thick titanium alloy wearing layer of inside and outside tube weld built-up welding 3mm.

Claims

1, a kind of copper coin throughflow tuyere is made up of inner core, urceolus, flange and spiral guide water board, it is characterized in that being thicker than by the urceolus end wall that the fine copper plate is made the thickness of inside and outside tube barrel.

2, copper coin throughflow tuyere as claimed in claim 1 is characterized in that urceolus end and the built-up welding of inside and outside tube weld have the titanium alloy wearing layer.