集装箱船螺旋桨设计计算说明书

1、.HPE：弋:bd“。集装箱船螺旋桨设计计算说明书班级：船舶11-3学号：1102120324姓名：孙凯凯指导老师：刘大路二”“De:1.已知船体的主要参数设计水线长Lwl=91.6垂线间长Lpp=90.0m型宽B = 16.7m设计吃水T = 5.3m排水体积 =6253.2m3排水量 = 6409.6t方型系数C B=:0.785桨轴中心距基线高度Zp = 1.90m棱形系数Cp = 0.790由模型试验提供的船体有效马力曲线数据如下:航速V (kn)1011121314有效马力PE (hp)76310661535225419222.主机参数主机功率Ps=2900kw主机转速N = 755

2、r/min转向右旋减速比i=3.355:1传递效率n s=0.97(已将减速箱考虑在内)3.相关推进因子伴流分数w = 0.3425推力减额分数t = 0.275相对旋转效率n R = 1.0船身效率H二口 =1.10271 -w4可以达到最大航速的计算0.97采用MAC四叶桨图谱进行计算。取功率储备 10%轴系效率n s螺旋桨敞水收到马力Pd= 0.9PS s r=0.9X 2900X 1.36X 0.97X 1.0=2531.7hp231r/min3.355根据MAU4-40 MAU4-55 MAU4-70的JBp - S图谱列表计算项目单位数值假定航速Vkn11121314Va=(1-w

3、)Vkn7.23257.898.54759.205BP=NE0.5/Va2.596.352677.51663.45852.726JBF9.8168.2397.9667.261MAU4-403106.597.589.883P/D0.5620.5750.5920.612n o0.4510.47750.5050.525Pte =Pd n h n ohp1712.2611812.8701917.2771993.208MAU4-55310696.588.581.8P/D0.5980.6150.6350.655n o0.43320.460.4870.51Pte =Pd n h n ohp1644.6821

4、746.4301848.9381936.260MAU4-703104.595.587.580.67P/D0.60.6180.6380.661n o0.421.44750.47250.495Pte=FD n h n ohp1594.5671698.9731793.8871879.311据上表的计算结果可绘制PTE、3、P/D及n。对V的曲线，如下图所示从PTE f(V)曲线与船体满载有效马力曲线之交点，可获得不同盘面比所对应的设计航速及 螺旋桨最佳要素P/D、D及耳。如下表所列。MAUVmaxP/DDn o4-4013.910.5885.63.300.534-5513.780.62385.63.

5、270.4964-7013.710.63184.93.220.4795空泡校核按柏利尔空泡限界线中商船上限线，计算不发生空泡之最小展开面积比。桨轴沉深 hs =T Zp=5.1 1.90=3.2mpo pv = pa + 丫 hs pv = 10300+1025 X 3.2-174=13406kgf/m2计算温度 t = 15 C ,Pv = 174kgf/ m 2 , PD =3443.1hp, p = 104.63kgfs 2/m4序号项目单位数值MAU4-40MAU4-55MAU4-701VmaxKn13.9113.7813.712VA=0.5144Vmax(1-w)m/s4.584.5

6、44.513(0.7 n ND/60)2(m/s)2780.63766.5743.244V20.7R=V2A+ (序号 3)(m/s)2801.77787.11763.5851 2Z =(P0- pv)/ p V0.7R20.320.3250.3366n c0.130.1350.1427T=FD n o 75/VAkgf29882.828212.227426.581 2Ap=T/ p V0.7R n c22 m5.485.084.849Ae=Ap/(1.067-0.229P/D)2 m5.875.505.241012Ae/Ao=Ae/ 1 n D240.690.650.64按上述结果作图如下，

7、可求得不发生空泡的最小盘面比以及对应的最佳螺旋桨要素“:“泡:汀:.a：；：” .HD*pmiO.con：n o=0.48 Vmax= 13.73knAe / Ao = 0.64P/D= 0.63 D=3.24m6. 强度校核按2001年规范 校核t0.25R及t0.6r,应不小于按下式计算之值：丫A1 Ne2 3 10t= , 丫 - -, X=A2GAdN2D3/10 Zb K - XZbN计算功率 Ne=3944X 0.97=3826hp3Ad = Ae / Ao=0.64, P/D= 0.63 ,； - 8 ， G=7.6g/cm ,N=n e=231r/minb0.66R =0.22

8、6D Ad/(0.1Z)=0.226 X 3.24 X 0.64 - 0.4=1.1716mb0.25R=0.7212b0.66R = 0.845mb0.6R =0.9911b 0.66R = 1.1612m项目单位数值0.25R0.6R弦长bm0.8451.16126342072501511410635K4434A = D/P(K1-K2D/Po.7)+ K3D/Po.7-K39221494Y=A2/(Zbn e)19218.695327.42.二.三:三:.:.三严:注:二K58223K63412K74165K8380330A=D/P(K5+K6 & )+K7 & +Kb1358.7910

9、38.89材料系数K （铝镍合金）1.1791.179X=AGANto71010Zb0.3550.197t=*Y/(K X)mm152.7273.66MAI标准桨叶厚度t mm123.970.6校核结果不满足要求实取桨叶厚度mm15374实取桨叶厚度按t i.oR=O.OO35D=11.34mm与t o.25R=l53mn连直线决定:o.3R =143.6mmo.5R =1o5.8mmo.7R = 67mmo.9R = 3o.2mmt o.2R =162.4mmtt o.4R = 134.7mmtt o.6R = 86.9mmtt o.8R = 49.1mmt7. 螺距修正根据尾轴直径大小，决

10、定毂径比 dh/D=o.18，此值与MAUK标准毂径比相同，故对此项 螺距无需修正。由于实际桨叶厚度大于MAUK标准厚度，故需因厚度差异进行螺距修正。设计桨(+ o.7R=0.067/(0.9964X 1.1716)=0.05739标准桨(fl o.7R = 0.0171 X 3.24/(0.9964X 0.3616X 3.24)=0.04746(取MAU4 55为基准桨)Va (1-)W30 866/、1-s = -V-=0.64 X 13.73 X 30.866/ (231 X 2.0412 ) =0.5744NPNPttt0 55 (一)0.7R =(一)0.7R 设一(一)0.7R标

11、X X 0.75=0.012453bbb0.64Ppt(匚)t= 2()o(1 s) (-)o.7R =-2 X 0.63 X 0.5744 X 0.012453 =-0.009013DDb修正后的螺距比：Ppp=(+ ( )t =0.63+0.009013=0.64 DDD“:“泡:汀:.a：；：” .HD*pmiO.con：8. 重量及惯性矩计算桨叶重Gb =.169 Zbmax(.5t0.2 t0.6)(-D)D= 0.169760041.1716(0.50.16240.0869)(1 0.18)3.24= 2688.23kgfGh =(0.88 -0.66乜儿 d2 =(0.88 -0

12、.660.5932 76000.5832 =869.22kgfd0.593d0 =0.0450.108(PD / N)1/3 KLk=0.0450.108(3443.1/231)1/3 - 0.1 0.5932 =0.281m2G =Gb - Gh = kgf *cm *slmp =0.0948 吃bmax (0.5t.2 + t.6)D 3 kgf cm s29. 敞水特性曲线由于校核后所得盘面比 AE / AO = 0.64，所以无需由MAU4-55,MAU4-70,P/D=0.63的敞 水特性曲线内插得到MAU4-64,P/D= 0.63的敞水特性曲线，可以直接从课本附录中 MAU4-55KTKQ-J图查得数据，其数据如下：设计桨的敞水特性数据表J00.20.40.610KQ0.280.23280.16680.1181KT0.27590.21570.13780.0502设计桨的敞水性征曲线严:注:二10.系柱特性计算由上图得J=0时计算功率K=0.2759 , KQ=0.028.d=3944X 0.97=3825.68hp系柱推力减额分数取t 0=0.04主机转矩PD 60 75 3825.68 60 752tiN2 冗 231=11861.22kgf系数推力K