Title:
STEAM SUPPLY SYSTEM AND CHECK VALVE USED FOR SAME
Document Type and Number:
WIPO Patent Application WO/2011/036956
Kind Code:
A1
Abstract:
The control accuracy of steam by means of a pressure reducing valve is enhanced.
Provided is a steam supply system which is configured in such a manner that re-evaporated steam (FS) in a re-evaporation tank (2) is sucked by a steam ejector (4) and mixed with passing steam (S') in a form that a pressure reducing valve (3) is interposed in a steam supply passage (1), the steam ejector (4) is interposed on the downstream side of the pressure reducing valve (3) in the steam supply passage (1), a suction section (4a) of the steam ejector (4) and the re-evaporation tank (2) for re-evaporating condensate (D1) are connected by a suction passage (9), and the passing steam (S') of the pressure reducing valve (3) is set as the driving steam of the steam ejector (4), and in which a check valve (10) for suppressing the back-flow of the steam to the re-evaporation tank (2) is interposed in the suction passage (9). The steam supply system is configured in such a manner that the valve opening of the pressure reducing valve (3) is adjusted according to the temperature or pressure of the steam on the downstream side of the steam ejector (4) in the steam supply passage (1), and has a structure in which the check valve (10) has specific flow rate characteristics in which the increasing rate of flow rate along with an increase in the valve opening of the check valve is equivalent between a small opening region with a small valve opening and a large opening region with a large valve opening, or specific flow rate characteristics in which the increasing rate of the flow rate is less in the small opening region than in the large opening region.
Inventors:
MATSUKAWA Naoki (881, Nagasuna, Noguchicho, Kakogawa-sh, Hyogo 11, 〒6758511, JP)
Application Number:
JP2010/063383
Publication Date:
March 31, 2011
Filing Date:
August 06, 2010
Export Citation:
Assignee:
TLV CO., LTD. (881 Nagasuna, Noguchicho Kakogawa-sh, Hyogo 11, 〒6758511, JP)
株式会社テイエルブイ (〒11 兵庫県加古川市野口町長砂８８１番地 Hyogo, 〒6758511, JP)
株式会社テイエルブイ (〒11 兵庫県加古川市野口町長砂８８１番地 Hyogo, 〒6758511, JP)
International Classes:
F04F5/48; F16K15/06; F22B3/04
Attorney, Agent or Firm:
KITAMURA Shuichiro (3-3 Nakanoshima 3-chome, Kita-ku Osaka-sh, Osaka 05, 〒5300005, JP)
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