查询词典 diffusion air pump

It is could be concluded that the larger pump impeller diameter may obviously increase the efficiency of both conduit and pump system; increasing pump diameter and decreasing its rotational speed is consistent with reducing nD value.It is suitable to pump system with low head to choose lower nD value, so as a hydraulic model of axial flow pump with the better hydraulic characteristics could be obtained.

结果表明：选取较大的水泵叶轮直径将显著提高流道效率和泵装置效率；&增径降速&与降低nD值是一致的；在泵装置扬程较低的情况下，选取较小的nD值便于选用到水力性能较好的轴流泵水力模型。

At present, the seal-type multi-stage vacuum pump is the most widely used access technology, a pump, it can be used as a separate low-vacuum equipment to the exhaust pump, it can be used as high-vacuum exhaust pump, when the first class, formed into a high demand for multi-stage pump.

目前，油封式多级泵是国内真空获得技术中应用最广的一种泵，它可单独用作低真空设备的排气用泵，也可用作高真空排气时的前级真空泵，组成成高要求的多级泵。

The pump rotor shaft and motor are installed vertically, pump inlet at the top of the lower part of the exhaust port at the pump, pump casing with a water-cooled units, to reduce the pump bearings and seal at the temperature.

泵的转子轴及电机均为竖直安装，泵进气口在上面，排气口在泵下部，泵壳带有水冷套，以降低泵轴承及轴封处的温度。

It specializes in using fluoroplastic alloy to manufacture products of more than 400 specification series including CQB, IMD magnetic drive pump, IHF, IHF, FSB centrifugal pump, FZB self-priming pump, UHB-ZK corrosion-proof and wear-proof sand pump, FYH, FYS corrosion-proof submerged pump, fluorine lining valve, uorine lining piping, pipe fittings etc..

采用氟塑料合金，专业生产 CQB 、 IMD 磁力泵， IHF 、 IHF、 FSB 离心泵， FZB 自吸泵、 UHB-ZK 耐腐耐磨砂浆泵， FYH 、 FYS 耐腐蚀液下泵、及衬氟阀门、衬氟管道、管件等四百多个规格系列产品。

The major products include: KCB, 2CY, YCB gear pump, 3 G, 2WW, G-type screw pump, LB freezer for pumps, CYZ centrifugal pumps, NYP high viscosity pump, RY conducting oil pump, F stainless steel pumps, LQCB asphalt pump, AY centrifugal pumps, and so on.

产品主要包括：KCB、2CY、YCB齿轮泵，3G、2WW、G型螺杆泵，LB冷冻机专用泵，CYZ离心油泵，NYP高粘度泵，RY导热油泵，F不锈钢泵，LQCB沥青泵，AY离心油泵等。

Corett pump is a stock enterprise .The main produet is magneticpump,water pump,self suction pump,shielding pump and metering pump.

高瑞特泵业是专业从事磁力驱动循环泵、全自动家用增压泵、全自动自吸供水泵、屏蔽管道泵、计量解液泵等特种泵类产品的开发、生产、销售、服务为一体的企业。

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

Screw pump the working principle is: screw pump work, the liquid after being inhaled into the screw pump shell and sealed by Wai space, when the initiative screw rotation, the screw pump seal volume in the squeezed increase Luoya Screw pump pressure, and along the axial movement.

螺杆泵的工作原理是：螺杆泵工作时，液体被吸入后就进入螺纹与泵壳所围的密封空间，当主动螺杆旋转时，螺杆泵密封容积在螺牙的挤压下提高螺杆泵压力，并沿轴向移动。

Company Products Main Series: pipeline pump, centrifugal pump, sewage pumps, self-priming pump, liquid pump, fire pump and so on.

公司产品主要系列：管道泵、离心泵、排污泵、自吸泵、液下泵、消防泵等。

Shenling has taken part in drafting the national standards: Dehumidifiers, energy efficiency limit value of the Chillers and its energy efficiency ratio grade, energy efficiency limit value of the Packaged Air Conditioner and its energy efficiency ratio grade, Rooftop Air-conditioners, Vapor Compression Cycle Chillers, For Industry and Commerce Use and Similar Purpose Chillers, Packaged Air Conditioners, Changeable Air Amount Terminal Units, Aeration Equipment for Air Energy Reclaiming, core documents of quality standards for constructing project products, Positive Displacement Compressing Condensers, Heat Pump Chillers,Modular Air Handling Units,screw type refrigerant compressors, Purchase specification on heating Ventilating and air conditioning equipment for chemical plant.

申菱公司参与起草的产品国家标准：除湿机、冷水机组能效限定值及能源效率等级、单元式空气调节机能效限定值及能源效率等级、屋顶式空气调节机组、蒸气压缩循环冷水机组工商业和类似用途的冷水机组、单元式空气调节机、空调变风量末端装置、空气——空气能量回收通风装置、建设工程产品质量标准核心条文、容积式压缩冷凝机组、热泵热水机、组合式空调机组、螺杆式制冷剂压缩机、化工暖通空调设备采购规定。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。