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螺旋管

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The driver consists of magnetostrictive rod, front magnetic pole end cap, back magnetic pole end cap, exciting winding, micro displacement output head, casing, fixed end cap, front end cap, spring, winding tap, flat spiral pipe, water inlet pipe and water outlet pipe. The water cooler of the present invention is formed through inserting one end of some metal pipe into positioning hole of spindle, installing rolling tool onto tool carrier, adjusting the lathe to the pitch of the flat spiral pipe and starting the lathe to complete the extruding formation of the flat spiral pipe.

本发明的驱动器包括有磁致伸缩棒(7),前磁极端盖(3),后磁极端盖(10),励磁线圈(5),微位移输出头(1),壳体(12),固定端盖(9)、前端盖(2),弹簧(13),及线圈抽头(11),螺旋扁管(6),入水管(8)和出水管(4);本发明的水冷装置的成型方法为把金属圆管的一端插入芯轴(18)的定位孔(23)中,将滚压工具(20)安装在刀架上,调整车床的加工螺距与螺旋扁管(6)的螺距相等,启动车床,完成整个螺旋扁管的挤压成型。

According to the dynamics analysis of the cotton sliver coiling process,by considering the minimum friction of cotton sliver caused by screwy pipes as objective function the design of screwy pipes of can coiler is explained based on the theory of the variational direct-method.

对棉条圈条过程定量地进行了动力学分析,以棉条所受曲线斜管摩擦力最小为目标函数,基于变分问题直接法原理设计出圈条盘螺旋形曲线斜管。这种螺旋形曲线斜管充分利用圈条盘的转动对棉条产生的离心力甩摆作用,使棉条所受曲线斜管摩擦力较小,从而使出条更顺畅;在一定程度上降低了圈条盘螺旋形曲线斜管堵眼频率与条筒乱条几率,使其更适应现代并条机生产高速化的要求

Experimental results indicate that the B/A value greatly affects the internal Nusselt number and friction factor of the twisted tube because the parameters decrease with the increase of B/A and S/d values, more rapidly with the former, and that the Nusselt number and friction factor of the twisted oblate tube increase respectively by 30%~150% and 20%~50%, as compared with those of the smooth tube at the same Reynolds number and Prandtl number.

实验结果表明:高扭曲比螺旋扁管的管内努塞尔数和阻力系数均随B/A值和S/d值的增大而减小,但随B/A值的增加而减小得更快,B/A值对高扭曲比螺旋扁管的管内传热与流阻性能影响更大;在相同雷诺数和普朗特数下,高扭曲比螺旋扁管管内的努塞尔数为光滑管的1.3~2.5倍;阻力系数为光滑管的1.2~1.5倍。

They are not additional strands or loops or toroids.

他们不是额外链或循环或螺旋管

With the new equi-drive system and two larger toroids this coil is expected to achieve as much as 70cm (29) spark length.

随着新埃奎泰驱动系统,这两个较大的螺旋管线圈预计能实现多达70厘米(29)火花的长度。

Therefore a 2 new toroids were built, each employing two tubes together around a 21cm diameter plywood disk.

因此,1 2个新的螺旋管建成,各自雇用约1 21厘米直径的胶合板上两条管道在一起。

50KV. The larger tank capacitance allows the use of larger toroids on both coils on the twin system, and more than doubles individual spark energy, making the overall performance better and far more impressive.

较大的坦克电容允许就这两个系统的两个线圈使用较大的螺旋管,增加了一倍以上个人火花能量,使整体性能更好,更令人印象深刻。

Use non-gapped E cores or toroids.

使用非核心或缺口的位置螺旋管

The heat transfer enhancement and pressure drop of spiral tube with oval cross section and thick wall were investigated.

对椭圆断面厚壁螺旋管进行了强化传热和流体阻力实验研究。

Ensor analysis ; helical tube ; heat transfer ; perturbation method

张量分析;螺旋管壁;热传导;正则摄动

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