Title:
PIPE COUPLING METHOD, PIPE EXTENSION JIG, AND PIPE EXTENSION METHOD USING PIPE EXTENSION JIG
Document Type and Number:
WIPO Patent Application WO/2011/142180
Kind Code:
A1
Abstract:
Disclosed is a pipe coupling method that does not require joints during pipe coupling and which can reduce the coupling time required. The pipe coupling method has: a blocking step, wherein an open end section of a first pipe (10a) of two pipes is blocked and an open end section of a second pipe (10b) is partially blocked; a pipe extension step, wherein a coupling end section in the first pipe (10a) is extended and part of the extended coupling end section is widened outwards more than other parts to form a partially extended pipe section (22); an installation step, wherein the coupling end section of the second pipe (10b) is inserted into the coupling end section of the extended first pipe (10a); a gas replacement step, wherein combustion gas is caused to flow towards the open end section of the first pipe (10a) from the partially extended pipe section (22) and air inside the pipe is discharged from the open end section of the partially blocked second pipe (10b); and a soldering step, wherein the gap between the coupling end section of the first pipe (10a) and the coupling end section of the second pipe (10b) is filled in after the gas replacement step has been completed.
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Inventors:
SHIKA, Atsushi (Ltd. 5-2 Higashi-Ikebukuro 4-chome, Toshima-k, Tokyo 66, 〒1708466, JP)
Application Number:
JP2011/057214
Publication Date:
November 17, 2011
Filing Date:
March 24, 2011
Export Citation:
Assignee:
Hitachi Plant Technologies, Ltd. (5-2 Higashi-Ikebukuro 4-chome, Toshima-ku Tokyo, 66, 〒1708466, JP)
株式会社日立プラントテクノロジー (〒66 東京都豊島区東池袋４丁目５番２号 Tokyo, 〒1708466, JP)
株式会社日立プラントテクノロジー (〒66 東京都豊島区東池袋４丁目５番２号 Tokyo, 〒1708466, JP)
International Classes:
B23K1/18; B21D39/20; B21D41/02; B23K31/02; F16L13/02; B23K101/14
Attorney, Agent or Firm:
MURAKAMI, Tomokazu (9th Floor, COI Minami-Ikebukuro Bldg. 27-17, Minami-Ikebukuro 2-chome, Toshima-k, Tokyo 22, 〒1710022, JP)
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Claims: