• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A plate heat exchanger for use with sea water comprises plates of austenitic Cr-Ni steel having a coating of a less noble metal such as zinc or tin or a less noble alloy.
    公开号:SU1262259A1
    申请号:SU817771940
    申请日:1981-07-28
    公开日:1986-10-07
    发明作者:Дитер Бем；Ханс-Йохен Фиркс；Дитер Хартиг
    申请人:Феб Комбинат Шиффбау (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to plate heat exchangers and can be used in any technical field, where water flows through the device, which has an enhanced corrosive effect as a result of an increased concentration of predominantly chlorine ions, in particular, in ship heat exchangers, through which sea or brackish water flows.
    For plate heat exchangers, corrosion-resistant stainless austenitic chromium nickel steels are commonly used to ensure a long service life. This gives good results when fresh water passes through the heat exchanger. However, when a sea or brackish water passes through the apparatus after short-term operation, corrosion damage due to pitting corrosion and, above all, crevice corrosion, is revealed, which significantly reduces the service life of the apparatus.
    Attempts to increase the service life using copper alloys did not yield the expected result. The use of titanium for the manufacture of apparatuses considerably increased the cost of the instruction.
    Known (for German application No. 27 13 977, cl. F 28 F 3/00, publ. 1978), a heat pool in which the destructive effect of sea or brackish water caused by its reduced flow rate due to ingress of foreign particles is reduced due to eliminating a decrease in the rate of flow of water.
    However, gaps between the rubber seal and the metal are not excluded.
    The purpose of the invention is to increase the service life of the apparatus, made of austenitic chromium-nickel steels, in conditions of operation on brackish or sea water.
    The plate heat exchanger contains successively installed plates alternating with rubber seals forming the passageways. The plates are made of austenitic chromium-nickel steels and have a submerged non-precious metal coating (e.g., zinc or tin) with respect to chromium-nickel steel.
    This coating provides protection against corrosion in the gaps in the area of rubber seals and plate supports even at a low speed of the medium, which increases the service life of plate heat exchangers.
    权利要求:
    Claims (1)
    [1]
    TILING HEAT EXCHANGE DEVICE, containing sequentially installed plates alternating with rubber seals forming passage channels, characterized in that, in order to increase the service life of the apparatus made of austenitic chromium-nickel steels, under conditions of operation on brackish or sea water, the plates are coated with a negative 1 native metal or alloy applied by immersion.
    类似技术:
    公开号 | 公开日 | 专利标题
    Chandler2014|Marine and offshore corrosion: marine engineering series
    Schweitzer2010|Fundamentals of corrosion
    SU1262259A1|1986-10-07|Plate heat-exchanging apparatus
    Charng et al.1982|Review of corrosion causes and corrosion control in a technical facility
    Little et al.1990|Microbiologically influenced corrosion in copper and nickel seawater piping systems
    Schleich2004|Typical failures of CuNi 90/10 seawater tubing systems and how to avoid them
    CHEN et al.2018|Galvanic series of metals and effect of alloy compositions on corrosion resistance in Sanya seawater
    LaQue1969|Deterioration of metals in an ocean environment
    Heaton1977|Impingement corrosion of condenser tubes
    LaQue1979|Qualification of aluminum for OTEC heat exchangers
    Ahmed1981|Corrosion and corrosion prevention of aluminium alloys in desalination plants: Part 2
    BIRN et al.2007|Corrosion behaviour of non-ferrous alloys in seawater in the Polish marine industry
    Fang et al.2020|Electrochemical Protection and Design
    Collins1955|Effect of design, fabrication and installation on the performance of stainless steel equipment
    Le Guyader et al.2021|Crevice Corrosion of Nickel Base Alloys and High-alloy Stainless Steels in Sea Water
    Birn et al.2004|Corrosion behaviour of non-ferrous metals in sea water
    Powell2004|Corrosion and Biofouling Resistance Evaluation of 90-10 Copper-Nickel
    AILOR JR1969|A Review of Aluminum Corrosion in Tap Waters
    Campbell et al.1982|Sprayed aluminium and zinc protect against corrosion by aqueous solutions
    Krishnan1985|Corrosion failures in marine environment.
    Orr et al.1950|Theory of corrosion for engineers
    Powell et al.2000|Copper-nickel alloys for marine applications
    Uhlig1952|Corrosion Control in Water Systems
    JP2002363670A|2002-12-18|Stain prevention type copper alloy
    Zamanzadeh et al.2016|Corrosion Risk Assessment and Failure Analysis in Industrial Water Systems
    同族专利:
    公开号 | 公开日
    DK337481A|1982-04-15|
    SE8106024L|1982-04-15|
    CS240409B1|1986-02-13|
    GB2085144B|1984-11-07|
    GB2085144A|1982-04-21|
    DE3127951A1|1982-05-27|
    DD156057A3|1982-07-28|
    PL232779A1|1982-08-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3243713C2|1982-11-26|1985-05-15|Fr. Kammerer GmbH, 7530 Pforzheim|Flat heat exchanger plate and process for their manufacture|
    CH665272A5|1983-04-06|1988-04-29|Kammerer F Gmbh|Waermetauscherplatte and plattenwaermetauscher.|
    SE530847C2|2006-12-14|2008-09-30|Sandvik Intellectual Property|Plate for plate heat exchangers, plate heat exchangers made up of such plates and use of this plate heat exchanger|
    DE102008013358A1|2008-03-10|2009-09-17|Api Schmidt-Bretten Gmbh & Co. Kg|Plate heat exchanger, heat exchanger plate and process for their preparation|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD22453280A|DD156057A3|1980-10-14|1980-10-14|plate heat exchanger|
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