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    • 12. 发明公开
    • HEIZELEMENT UND VERFAHREN ZU DESSEN HERSTELLUNG
    • 加热元件与方法研究
    • EP1023735A1
    • 2000-08-02
    • EP98947223.8
    • 1998-10-02
    • Schaffler & Co., Gesellschaft m.b.H.
    • SMETANA, WalterOCHSENHOFER, Karl
    • H01C17/065H01C1/142
    • H01C17/065F42B3/124F42B3/198H01C1/142Y10T29/49099
    • The invention relates to a heating element which has a high heating-up rate and which has a predetermined resistance value, for triggering airbag systems. According to the inventive method for producing said heating element, a base consisting of an aluminium oxide ceramic is provided with a glass or glass ceramic coating. The surface of said coating can be lapped and polished if necessary. An extensive layer of AuPd-resinate is applied to the surface of the coating using the silk screen process and then structured into a resistance strip using etching technology. Said resistance strip is constricted in some areas and the ends of the resistance strip are brought into contact with an AgPd-thick-film conductor paste during the silk screen process, the Pd content of said paste being definitive for the desired resistance value. After the thick-film conductor paste has been dried and baked, the coated base is heated at temperatures of between 850° C and 950° C until the palladium in the resistance layer is evenly distributed and a stable resistance value has been established. Solder stop dams in the form of glass stops are arranged on the edges of the AgPd contacts facing the resistance strip in order to reduce the risk of unwanted alloys being formed on the resistance strip during a subsequent soldering process.
    • 16. 发明公开
    • Perforating gun using a bubble activated detonator
    • 穿孔机einem,durch eine Blase aktivierbaren雷管。
    • EP0482969A2
    • 1992-04-29
    • EP91402516.8
    • 1991-09-23
    • SCHLUMBERGER LIMITEDSERVICES PETROLIERS SCHLUMBERGER, (formerly Société de Prospection Electrique Schlumberger)SCHLUMBERGER TECHNOLOGY B.V.SCHLUMBERGER HOLDINGS LIMITED
    • Huber, KlausLerche, NolanEdwards, ArnoldRozek, KennethSmith, Edward, Jr.
    • F42B3/12F42B15/34F42D1/05
    • F42B3/124F42B3/125F42B3/128
    • An exploding foil bubble activated detonator, adapted for use in a perforating gun, includes an exploding foil (20b), the exploding foil (20b) including a neck section (20b2) which vaporizes when a current of sufficient magnitude and duration flows therethrough, a layer (22) of polyimide material deposited over said foil (20b), and a spacer layer (24) deposited over said layer (22) of polyimide material, the spacer layer (24) including a guiding hole (24a) disposed directly over the neck section (20b2) of the foil (20b). When the current flows through the neck section (20b2) of the foil (20b), a turbulence is caused to occur directly above the neck section (20b2). This turbulence causes a portion of the polyimide material to expand to form a bubble (22a). The bubble (22a) is shaped and sized by the guiding hole (24a) in the spacer layer (24) which is disposed directly over the neck section (20b2) of the foil (20b). The shaped and sized bubble (22a) in the polyimide material impacts an explosive (26b) thereby detonating the explosive (26b). A selective gun firing system may include the bubble activated detonator and functions to allow an operator to selectively fire, in a predetermined sequence, a plurality of perforators in the perforating gun, such as from bottom gun to top gun. A hall effect sensor disposed in a well truck is connected to a wireline to which the perforating gun is connected and senses a current in the wireline. A novel safety barrier is inserted into a hole in a barrel of a prior art exploding foil initiator (EFI) detonator for blocking a flying plate flying in the hole and thereby preventing accidental detonations of the EFI detonator.
    • 一种适用于穿孔枪的爆炸箔气泡激活雷管包括爆炸箔(20b),爆炸箔(20b)包括颈部(20b2),颈部部分(20b2)在足够的大小和持续时间流过其中时蒸发, 沉积在所述箔(20b)上的聚酰亚胺材料层(22)和沉积在所述聚酰亚胺材料层(22)上的间隔层(24),所述间隔层(24)包括直接设置在所述箔 (20b)的颈部(20b2)。 当电流流过箔(20b)的颈部(20b2)时,使湍流直接发生在颈部(20b2)的上方。 这种湍流导致聚酰亚胺材料的一部分膨胀以形成气泡(22a)。 气泡(22a)通过直接设置在箔(20b)的颈部(20b2)上的间隔层(24)中的引导孔(24a)成形和定尺寸。 聚酰亚胺材料中的形状和尺寸的泡沫(22a)撞击炸药(26b),从而引爆炸药(26b)。 选择性枪射击系统可以包括气泡激活的雷管并且用于允许操作者以预定顺序选择性地在射孔枪中击发多个穿孔器,例如从底部枪到顶部枪。 设置在井底车中的霍尔效应传感器连接到穿孔枪连接到的电缆上并感测电缆中的电流。 一个新颖的安全屏障被插入现有技术的爆炸箔引发器(EFI)雷管的枪管中的一个孔中,用于阻挡在孔中飞行的飞板,从而防止EFI雷管的意外爆炸。