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    • 44. 发明申请
    • CENTRIFUGAL PUMP, IN PARTICULAR FOR SUPPLYING POWER TO ROCKET ENGINES
    • 离心泵,特别是向火箭发动机提供动力
    • WO2015011366A3
    • 2015-03-26
    • PCT/FR2014051799
    • 2014-07-11
    • SNECMA
    • DANGUY FRANÇOISNGUYEN DUC JEAN-MICHELFABBRI LAURENTSENE CÉDRIC
    • F04D7/02F04D13/04F04D29/041
    • F04D29/086F01D3/04F01D5/02F01D25/16F01D25/183F02K9/46F02K9/48F04D1/00F04D7/02F04D13/043F04D29/0413F04D29/043F04D29/046F04D29/108F04D29/22F04D29/426F05D2220/80F05D2240/53
    • The invention relates to the field of centrifugal pumps, and in particular to a centrifugal pump (303, 403) including at least one impeller (303a, 403a), a rotatable shaft (302, 402) that is rigidly connected to said impeller (303a, 403a), a housing (320, 420) having an axial intake passage (325, 425), at least one first bearing (305, 405) supporting said rotatable shaft (302, 402) in said housing (320, 420), and at least one dynamic seal (311, 411) around the rotatable shaft (302, 402), the impeller (303a, 403a) being located between the at least one dynamic seal (311, 411) and the axial intake passage (325, 425) of the pump (303, 403). Said centrifugal pump (303, 403) also includes, between the impeller (303a, 403a) and the at least one dynamic seal (311, 411), an axial force compensation disk (330,430), rigidly connected to the shaft (302, 402), and having a diameter larger than 70 % of the diameter of the impeller (303a, 403a). A front surface (330a, 430a) of said disk (330, 430) faces the impeller (303a, 403a) and is connected to a bypass for pressurized fluid taken downstream of the pump (303, 403), and a rear surface (330b, 430b) faces the dynamic seals (311, 411) and has blades (330c, 430c) having a pitch that is least partially radial.
    • 本发明涉及离心泵领域,尤其涉及包括至少一个叶轮(303a,403a),刚性连接到所述叶轮(303a,403a)的可旋转轴(302,402)的离心泵(303,403) ,具有轴向进气通道(325,425)的壳体(320,420),支撑所述壳体(320,420)中的所述可旋转轴(302,402)的至少一个第一轴承(305,405) 和围绕所述可旋转轴(302,402)的至少一个动态密封件(311,411),所述叶轮(303a,403a)位于所述至少一个动态密封件(311,411)和所述轴向进气通道 (303,403)的流量(425)。 所述离心泵(303,403)在所述叶轮(303a,403a)和所述至少一个动态密封件(311,411)之间还包括轴向力补偿盘(330,430),所述轴向力补偿盘刚性地连接到所述轴(302,402) ),且其直径大于叶轮(303a,403a)的直径的70%。 所述盘(330,430)的前表面(330a,430a)面对叶轮(303a,403a)并且连接到泵(303,403)下游的加压流体的旁路和后表面(330b ,430b)面向所述动态密封件(311,411)并且具有叶片(330c,430c),所述叶片具有至少部分径向的节距。
    • 47. 发明申请
    • CAP FOR SUBMERSIBLE PUMP
    • 不合格泵的CAP
    • WO2014003601A1
    • 2014-01-03
    • PCT/RU2012/000718
    • 2012-08-30
    • YAZYKOV, Andrey Yurievich
    • YAZYKOV, Andrey Yurievich
    • E21B33/04
    • F04D29/086E21B33/03E21B33/0407E21B43/128F04D13/10F04D29/607
    • The cap for suspension of submersible pump with a pressure pipe and a cable comprises cover 2 with central axial hole 4 and with circular collar 10, implemented with conical inner surface 3 narrowing towards central hole 4, as well as clamping flange 5 with central hole 17, sealing rubber ring 6 of rubber cross-section to be installed between conical surface 3 of collar 10 of cover 2 and flat side 18 of flange 5. Bolts 7 with nuts 8 are installed in coaxial holes 9 of cover 2 and 5 for fixation of ring 6 on the outer side of casing pipe 1 of the well. Central hole 17 of clamping flange 5 is made with diameter D1 smaller than mean diameter Dm of rubber ring 6, while smaller diameter D2 of conical surface 3 of collar 10 of cover 2 is made with diameter exceeding mean diameter Dm of rubber ring 6. Cover 2 and flange 5 may be made of metal; in other embodiments, cover 2 and flange 5 are made of plastic, with stiffening ribs. Cover 2 has collet clamp 11 for pressure pipe installed in its central axial hole 4. Cover 2 is provided with cable entries 12, upper eyebolts 13, as well as with lower eyebolt 14 suspended with clevis 16 for fastening of a rope for suspension of submersible pump (not shown). All eyebolts 13 and 14 are located in the same centerline plane, in which the vertical axis of the cover and the flange lies. As a result increased reliability and durability is provided determined by elimination of a possibility for the edge of the flange hole to cut into the rubber ring owing to guaranteed displacement of the edge of the flange hole from the surface of the contact of the flange with the rubber ring.
    • 具有压力管和电缆的潜水泵的悬挂帽包括具有中心轴向孔4和圆形环10的盖2,其具有朝向中心孔4变窄的锥形内表面3以及具有中心孔17的夹紧凸缘5 ,将橡胶横截面的密封橡胶环6安装在盖2的套环10的锥形表面3和凸缘5的平坦侧18之间。具有螺母8的螺栓7安装在盖2和5的同轴孔9中, 环6在井的套管1的外侧。 夹紧凸缘5的中心孔17的直径D1小于橡胶环6的平均直径Dm,而罩2的套环10的锥形表面3的较小直径D2被制成直径超过橡胶环6的平均直径Dm。盖 2和凸缘5可以由金属制成; 在其他实施例中,盖2和凸缘5由塑料制成,具有加强肋。 盖2具有用于安装在其中心轴向孔4中的压力管的夹头11。盖2设置有电缆入口12,上吊环螺栓13以及悬挂有用于紧固潜水器绳索的U形夹16的下吊环螺栓14。 泵(未示出)。 所有的螺栓13和14都位于相同的中心线平面中,盖和凸缘的垂直轴线位于该中心线平面中。 结果提高了可靠性和耐久性,这是由于通过消除凸缘孔的边缘切入橡胶环的可能性而确定的,这是由于凸缘孔的边缘与凸缘的接触表面的位移 橡胶圈。
    • 50. 发明申请
    • 燃料ポンプ
    • 燃油泵
    • WO2013054412A1
    • 2013-04-18
    • PCT/JP2011/073514
    • 2011-10-13
    • 三菱電機株式会社濱谷 祐多郎
    • 濱谷 祐多郎
    • F04D5/00
    • F04D29/086F04D5/002F04D29/026F04D29/0513F04D29/188F05D2300/43
    • 簡単且つ安価な構成で、インペラの回転抵抗の増大や、ポンプ室のロック等の不具合の発生を防止して、信頼性の確保とポンプ性能維持を両立させた燃料ポンプを得ることを目的として、ケーシング(18)の少なくとも一方のシール部のインペラの凹所群(20b、20c)に対向する位置に、インペラ(20)の凹所群(20b、20c)の膨潤量を予測したミクロンオーダーの凹形状(35、36)を形成するか、あるいは、インペラ(20)の凹所群(20b、20c)の形状を、該インペラの凹所群の膨潤量を予測した凹形状(50a、50b)とした。
    • 为了获得具有简单廉价结构的燃油泵,并且可以防止诸如增加叶轮的旋转阻力和泵室的锁定等问题,从而确保可靠性并保持泵的性能,凹形(35,36 考虑到叶轮(20)的一组凹部(20b,20c)的膨胀量的微米级尺寸形成在壳体(18)的至少一个密封部分上的相对于 或叶轮(20)的一组凹部(20b,20c)的形状被设定为与所采用的凹形(50a,50b)相同, 考虑到叶轮组的一组凹部的膨胀量。