Title:
CORRECTION METHOD FOR ONE OF A ROW OF TUBES
Document Type and Number:
WIPO Patent Application WO/2010/139096
Kind Code:
A1
Abstract:
A correction method for a single tube of a row tube array (4) includes these steps: first, according to a model, a row tube array (4) one end of which is fixed, is put on a platform, next, a lower U-beam (3) is inserted below the row tube array (4), an upper U-beam (1) is positioned above the row tube array and is fixed to the lower U-beam (3) by screws (2). Then a positioning block (5) is inserted at one side of the tube to be corrected, and an L-shape fixing block (6) is provided at one side, at the ends of the two upper and lower U-beams (1). Finally, a force is exerted at one side of the L-shape fixed block (6) by a jack (7) so as to correct the single tube. These steps are repeated until all uncorrected tubes of the array (4) are corrected. The advantages of the invention are that it solves the problem of inadequate cold correction space between tubes of an array (4), and avoids the quality problems caused by hot correction. The structure of the holding device used in the invention is simple and practical, and can be used widely in similar products.
Application Number:
CN2009/001053
Publication Date:
December 09, 2010
Filing Date:
September 21, 2009
Export Citation:
Assignee:
SHANGHAI BOILER WORKS CO., LTD (No.250 Hua Ning Road, Min Hang District, Shanghai 5, 200245, CN)
International Classes:
B21D3/00
Attorney, Agent or Firm:
SHANGHAI SHEN HUI PATENT AGENT LTD. (Room 2415, 103 Cao Bao Road, Shanghai 3, 200233, CN)
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