INTERNAL PRESSURE SELF-SEALING ROTARY COMPENSATOR

Title:

INTERNAL PRESSURE SELF-SEALING ROTARY COMPENSATOR

Document Type and Number:

WIPO Patent Application WO/2023/155374

Kind Code:

A1

Abstract:

An internal pressure self-sealing rotary compensator, which comprises a fixed pipe (1) and a rotatable pipe (2); an end portion of the fixed pipe has a conical opening, the conical opening end thereof is connected to a sealing base (3), and an inner cavity of the sealing base is provided with an inwardly protruding rotating base (4); an annular face sealing piece (5) is installed on an outer side of the rotating base, and the annular face sealing piece (5) is fixed in an annular face sealing cavity by means of a gland (6); an end face self-sealing piece (7) is installed on an inner side of the rotating base, an outer side face of the end face self-sealing piece abuts against an arc-shaped annular protruding face (8) on the rotatable pipe, an outer section of the arc-shaped annular protruding face smoothly transitions with a first outer conical face (9) at the end of the rotatable pipe, and an inner section of the arc-shaped annular protruding face intersects with an outer surface of the rotatable pipe; the first outer conical face is connected to a second outer conical face (10), and the taper of the second outer conical face matches with the taper of the conical opening of the end portion of the fixed pipe. The present internal pressure self-sealing rotary compensator is simple in structure, convenient to manufacture, a performance index of an end face sealing piece can be lowered, and production costs can be reduced.

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WO/1999/013259	FLEXIBLE PIPE LOOP
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Inventors:

SONG ZHANGGEN (CN)
SONG SUWEI (CN)
SONG ZHICHENG (CN)

Application Number:

PCT/CN2022/105902

Publication Date:

August 24, 2023

Filing Date:

July 15, 2022

Export Citation:

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Assignee:

SONG ZHANGGEN (CN)
SONG SUWEI (CN)
SONG ZHICHENG (CN)

International Classes:

F16L51/00; F16L27/08

Foreign References:

CN114458852A	2022-05-10
CN1908498A	2007-02-07
CN104879597A	2015-09-02
CN105909909A	2016-08-31
CN102705611A	2012-10-03
CN105805470A	2016-07-27
US3712648A	1973-01-23
JP3077693B1	2000-08-14
JP2012107662A	2012-06-07

Attorney, Agent or Firm:

NANJING TIANHUA PATENT AGENT CO., LTD. (CN)

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