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    • 2. 发明授权
    • Method and apparatus for conveying gas
    • 输送气体的方法和装置
    • US4718834A
    • 1988-01-12
    • US891336
    • 1986-07-31
    • Karl EbnerStefan Ebner
    • Karl EbnerStefan Ebner
    • F04C19/00
    • F04C19/004
    • A continuous flow of cooling liquid is provided to a liquid ring pump conveying a flow of gas, such that the cooling liquid simultaneously acts as the working liquid in the pump. Gas that becomes dissolved in the cooling fluid during pumping is separated therefrom and is returned to join the pump gas inlet flow, and the cooling liquid is thereafter discharged to carry away any heat picked up from the pump. In an aspect of this invention, the degassing of dissolved gas from the exhaust cooling water flow leaving the pump is facilitated by forming a spray in a low-pressure degasser connected to the pump gas inlet.
    • 向输送气流的液环泵提供连续流动的冷却液体,使得冷却液体同时用作泵中的工作液体。 在泵送期间溶解在冷却流体中的气体被分离并返回以连接泵气体入口流,然后排出冷却液以携带从泵拾取的任何热量。 在本发明的一个方面,通过在连接到泵气体入口的低压脱气器中形成喷雾来促进溶解气体从离开泵的排气冷却水流中脱气。
    • 8. 发明授权
    • High resistance polypropylene tube
    • 高阻聚丙烯管
    • US06433087B1
    • 2002-08-13
    • US09581862
    • 2000-07-31
    • Karl EbnerRoland KonradStefan SchiesserKlaus Bernreitner
    • Karl EbnerRoland KonradStefan SchiesserKlaus Bernreitner
    • C08L2300
    • F16L9/127C08F297/083
    • The invention relates to a high resistance polypropylene tube especially with a high modulus of elasticity in extension, high impact strength, annular rigidity and resistance towards knocks. The inventive tube is made of polypropylene and has a modulus of elasticity in extension of 1300-2300 N/mm2 and an impact strength of 60-110 kJ/m2. The inventive tube is produced by extrusion of a plastic moulding material consisting of two constituents A and B of composition A) 80-98 mass parts of an isotactic polypropylene homopolymer as a coherent matrix constituent with a decade regularity of >95% and B) 2-20 mass parts of a copolymer, consisting of 50-70 mass parts of propylene and 30-50 mass parts of ethylene and/or other C4-C8-&agr;-olefins as a dispersedly distributed elastomer component. The intrinsic viscosity ratio of both components B/A is 0.9-1.5 and the melt flow index of the moulding material is 0.15-0.8 g/10 min. The polypropylene tubes are suitable for use in waste water systems, especially as gully pipes, rainwater pipes, domestic drainpipes, or sound insulation pipes or shaft elements.
    • 本发明涉及一种高阻力聚丙烯管,特别是具有高伸长弹性模量,高冲击强度,环形刚度和耐撞击性。 本发明管由聚丙烯制成,弹性模量为1300-2300N / mm2,冲击强度为60-110kJ / m 2。 本发明的管是通过挤出由组合物A)80-98质量份的全同立构聚丙烯均聚物的两种组分A和B组成的塑料模制材料制成的,其为十位规整度> 95%的粘结基质组分,B)2 -20质量份共聚物,由50-70质量份丙烯和30-50质量份作为分散分布的弹性体组分的乙烯和/或其它C4-C8-α-烯烃组成。 两种组分B / A的特性粘度比为0.9-1.5,成型材料的熔体流动指数为0.15-0.8g / 10min。 聚丙烯管适用于废水系统,特别是沟渠,雨水管,家用排水管,隔音管或轴元件。