• 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:
    1412097 Detecting leakage in cryogenic tanks MITSUBISHI JUKOGYO KK 18 March 1974 [17 March 1973 29 March 1973] 11977/74 Heading F4P A cryogenic tank comprises an outer tank wall 1, an inner liquid impervious barrier 3, and thermal insulation 2 therebetween divided into layers 2a, 2b by an intermediate liquid impervious barrier 11 which has, on its side facing barrier 3, a capacitor layer 4 in the form of a lamination having, from barrier 11 inwards, an aluminium foil 10, an electrical insulation layer 9, a perforated aluminium foil 8, and a perforated sheet 7, so that any leakage of low-temperature liquid through the barrrier 3 penetrates via the passages 7a, 8a in foil 8 and sheet 7 into the electrical insulation layer 9, and consequently changes the capacitance of the capacitor layer, which capacitance change can be detected by some monitoring device. The layer 4 and barrier 11 can be made from a plurality of panels such as that shown in Fig. 4, the panels having holes 12 to establish communication between the electrical insulation layers 9 of the panels. Leads 13 lead to a capacitance meter. Eeach panel can have its own respective meter or they may all be connected to a single meter, or groups of panels may be associated with a single meter. If a single meter is used for all panels, it may have a scanning system for monitoring individual panels or panel groups. Nitrogen gas is circulated through the electrical insulation layer 9 by a fan 14, the gas passing through a gas analyser so that if gas rather than liquid penetrates into layer 9 this will be immediately detected by analyser 15. The layer 9 may have a honeycomb structure whereby, in use, the material between the cell walls contracts to form spaces with the walls through which the nitrogen may be circulated (Figs. 6 and 7, not shown). The tank shell may be of steel, the heat insulation of foamed plastics and the inner barrier 3 of fibreglass reinforced plastics sheets of polyurethane or of epoxy sheets. Barrier 11 is made from impervious synthetic resin and layer 9 is preferably formed from foamed plastics of open cell structure. The panel frame 6, layer 7 and barrier 11 may be all made of fluoroethylene.
    公开号:SU1077582A3
    申请号:SU742007519
    申请日:1974-03-15
    公开日:1984-02-29
    发明作者:Кацута Кихеи；Мацуяма Чиаки
    申请人:Мицубиси Дзюкогио Кабусики Кайся (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a cryogenic technique, namely to a storage tank for low temperature liquids. The closest to the present invention is a reservoir for low-temperature liquids containing an outer and an inner shell, a thermal insulating layer between them, placed in a thermal insulating layer, an electrically conductive sheath made of panels mounted inside the frame frame, impermeable to liquid, and fittings for children Leakage of low-temperature liquids lj. In a well-known reservoir, any leakage of liquid due to the destruction of the liquid-impermeable layer may cause a sudden cooling and destruction of the shell in the area adjacent to the leak. The purpose of the invention is to improve the performance by detecting leaks. The goal is achieved by the fact that in a tank for low-temperature liquids containing outer and inner shells, a heat insulation layer between them, placed in a heat insulation layer, an electrically impermeable conductive sheath made of panels mounted inside the frame frame, and devices for detecting low-temperature leaks liquids, each panel on the side of the inner sheath of the cutter is additionally equipped with a perforated electrical layer and a gas-permeable electrosize With the plating layer, separating the electrical conductive sheath from the electrically conductive layer, and with the wire connecting a perforated electrically conducting layer with a device for detection. In addition, the gas-permeable electrically insulating layer is made in the form of cells treated with silicone resin and filled with foam. FIG. 1 shows the proposed reservoir, section, on tfr. 2 - section AA in FIG. one; in fig. 3 shows a panel with a slit / in FIG. 4 is a diagram of the circulation system; in fig. 5 - panel with a layer in the form of checks. The reservoir for low-temperature liquids contains outer and inner shells 1 and 2, a heat insulation layer. The thermal insulation layer holds two sublayers 3 and 4. Sublayer 3 is located on the side with normal temperature, and sublayer 4 is on the low temperature side. Between the sublayers 3 and 4 there is a shell made of panels connected by ends. The panel contains a frame 5 and many sheet components; perforated sheet 6 with holes 7, perforated aluminum foil 8 serving as an electrically conductive layer, gas-permeable electrically insulating layer 9, aluminum foil 10 —a second conductive layer, gas-permeable electrically insulating layer 11 made of synthetic resin. The gas-permeable electrically insulating layer 11 may be made in the form of cells treated with silicone resin and filled with foam. When connecting the panels forming the shell, sheet 6 and aluminum foil 8 are laid face down into the tank and bolted to the inner surface of shell 1. Frame 5, sheet of foil 8 and layer 11 can be made of any electrically insulating, impermeable to this liquid and resistant to low temperature material such as polytetrafluoroethylene. Measurement wires 12 are pulled out of the tank through hollow bolts 13, with hermetic sealing of the points of entry and exit and connected to the detection device. When the internal liquid-tight layer (shell 2) is destroyed, a low-temperature liquid, such as liquefied natural gas, or its vapors, penetrates into the second sublayer 4. But further leakage will be temporarily stopped by a shell made of panels. The leaked fluid penetrates the electrolysis layer 9 through the opening 7 of the sheet b and the hole in perforated aluminum foil 8, but will be stopped from further leakage by the aluminum foil 10 and layer 11. from the layer 9, the foil layers 8 and 10, and the corresponding detection tool pointer deviates, indicating a leak. When vapors are mixed with gaseous nitrogen circulating through channels 14 made in frame 5, and the presence of these vapors in nitrogen will be detected by a gas analyzer 15. Such a reservoir allows to determine leaks, take urgent measures to prevent the destruction of the tank shell improves its performance.
    权利要求:
    Claims (2)
    [1]
    1. RESERVOIR FOR LOW-TEMPERATURE LIQUIDS, containing the detecting and inner shells, a thermal insulation layer between them, a liquid-impermeable conductive shell made of panels mounted inside the panel frame, and a device for detecting leaks of low-temperature liquids, characterized in that that, in order to improve performance by detecting leaks, each panel on the side of the inner shell of the tank is additionally equipped with a perforation Rowan conductive layer, gas-permeable electrically insulating layer separating the conductive sheath of the electrically conductive layer, and a wire electrically connects a perforated layer r risposobleniem for detection.
    [2]
    2. The tank according to claim 1, characterized in that the gas-permeable electrically insulating layer is made in the form of cells treated with silicone resin and filled with foam.
    Priority on points: 03/17/73 according to claim 1; 03/29/73 according to claim 2.
    phage 1
    SU _,> 1077582. 1077582
    类似技术:
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    同族专利:
    公开号 | 公开日
    SE395050B|1977-07-25|
    DE2413124A1|1974-10-10|
    CA1005373A|1977-02-15|
    NL7403623A|1974-09-19|
    US3908468A|1975-09-30|
    NL153319B|1977-05-16|
    FR2221687A1|1974-10-11|
    NO740941L|1974-09-18|
    ES424367A1|1976-10-16|
    FR2221687B1|1976-10-08|
    IT1005682B|1976-09-30|
    GB1412097A|1975-10-29|
    DE2413124B2|1976-12-02|
    BE812416A|1974-07-01|
    NO135380B|1976-12-20|
    NO135380C|1977-03-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2457391C2|2008-06-19|2012-07-27|Самсунг Хэви Инд. Ко., Лтд.|Design of cargo tank insulation for transportation of liquefied natural gas and method of its manufacturing|US3489311A|1967-05-25|1970-01-13|Aerojet General Co|Tanks for storage of liquefied gas|
    US3721898A|1968-12-04|1973-03-20|P Dragoumis|Apparatus for detecting leakage from or rupture of pipes and other vessels containing fluid under pressure|DE3030296A1|1980-08-09|1982-03-18|Reinhold Ing. 6990 Bad Mergentheim Barlian|DEVICE FOR DETECTING STEAM LEAKAGE|
    US4404843A|1981-07-20|1983-09-20|Marathon Oil Company|Cryogenic storage tank leak detection system|
    WO1986007574A1|1985-06-17|1986-12-31|Sharp Bruce R|Storage tanks having formed jacket for secondary containment|
    US4871078A|1983-10-21|1989-10-03|Sharp Bruce R|Storage tanks with formed jacket for secondary containment|
    FR2600989B1|1986-07-02|1989-04-28|Geostock|METHOD FOR MONITORING THE SEALING OF A STORAGE AND STORAGE DEVICE FOR IMPLEMENTING IT|
    DE3704594A1|1987-02-13|1988-08-25|Westerwald Ag|DEVICE FOR LEAK MONITORING AND LOCATION|
    US4922232A|1988-10-21|1990-05-01|Bosich Joseph F|Leakage containment and detection systems|
    FR2650391B1|1989-07-27|1993-07-16|Durand Alain|PROCESS FOR THE MANUFACTURE OR REHABILITATION OF A STORAGE TANK, RESERVOIRS OBTAINED|
    US4939833A|1989-08-02|1990-07-10|Coretank, Inc.|Double containment and leak detection apparatus|
    DE4015190A1|1990-05-11|1991-11-21|Gore W L & Ass Gmbh|FLAT FLOOR TANK AND METHOD FOR LEAK MONITORING OF FLAT FLOOR TANKS|
    FR2780767B1|1998-07-01|2000-10-13|Agence Spatiale Europeenne|WALL FOR CRYOGENIC TANK|
    FI20065411A|2006-06-16|2007-12-17|Aker Mtw Werft Gmbh|Method and arrangement for monitoring and identifying container leaks|
    CN109839432A|2018-03-23|2019-06-04|中国环境科学研究院|A kind of impervious barrier detection system and method based on magnetic field|
    CN109839431A|2018-03-23|2019-06-04|中国环境科学研究院|A kind of system and method carrying out impervious barrier detection using magnetic field|
    GB2597049A|2020-06-02|2022-01-19|Cryovac As|Vacuum panel|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP3118873A|JPS5334330B2|1973-03-17|1973-03-17|
    JP3608373A|JPS49122014A|1973-03-29|1973-03-29|
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