JPH0457036U

JPH0457036U -

Info

Publication number: JPH0457036U
Application number: JP9846190U
Authority: JP
Priority date: 1990-09-21
Filing date: 1990-09-21
Publication date: 1992-05-15

Description

[Brief explanation of the drawing]

第１図は本考案による煤吹装置の一実施例を示
すもので、煤吹用噴射媒体供給管の要部拡大断面
図、第２図は第１図の−線断面図、第３図は
煤吹装置の一般的構成例を示す図、第４図は煤吹
用噴射媒体供給管およびランス管の接合部を示す
断面図、第５図は従来例を示す拡大断面図、第５
図は第５図の−線断面図である。１……熱交換器、３……煤吹装置、６……ノズ
ル、７……ランス管、８……駆動機構、９……供
給管、９ａ……内管部、９ｂ……外管部、２４…
…シール部材、２８……キー溝、２９……キー部
。 Fig. 1 shows an embodiment of the soot blowing device according to the present invention. Fig. 2 is an enlarged sectional view of the main part of the soot blowing injection medium supply pipe, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a sectional view taken along the line - A diagram showing a general configuration example of a soot blowing device, FIG. 4 is a sectional view showing a joint part of a soot blowing injection medium supply pipe and a lance pipe, and FIG. 5 is an enlarged sectional view showing a conventional example.
The figure is a sectional view taken along the line -- in FIG. DESCRIPTION OF SYMBOLS 1... Heat exchanger, 3... Soot blower, 6... Nozzle, 7... Lance pipe, 8... Drive mechanism, 9... Supply pipe, 9a... Inner tube section, 9b... Outer tube section , 24...
... Seal member, 28 ... Keyway, 29 ... Key portion.

Claims

[Scope of utility model registration request]

A lance tube with a nozzle for blowing soot at its tip, a drive mechanism that moves this lance tube forward and backward into a heat exchanger etc. while rotating around its axis, and a lance tube provided with a soot blowing nozzle on the proximal end side. a cantilever-shaped supply pipe that is coaxially inserted from the lance pipe through a seal member and supplies a jetting medium for soot blowing to the distal end side of the lance pipe;
The soot blowing device blows soot by injecting the injection medium supplied to the lance pipe from the nozzle into the inside of a heat exchanger, etc. through the supply pipe, wherein the supply pipe is connected at the tip side. A double-tubular structure consisting of an inner and outer tube part that are separated from each other on the proximal end side, and in which a keyway provided at the open end of the outer tube part and a key part provided in the inner tube part are engaged with each other, The keyway is formed in the shape of a recess that opens on the inner circumferential side of the open end of the outer tube, and the outer circumferential surface of the key provided in the inner tube is connected to the outer tube by the inner bottom surface of the keyway. A soot blowing device characterized in that the soot blowing device is in an engaged state hidden from the outer circumferential side of the part.