射流管

By finite element analysis method, the temperature field of medium steel plate subject to multiple impinging jet s was numerically simulated and the transverse cooling curve was obtained, which provides theoretical basis for the process design of header pipes of a non restraint quencher.

采用有限元分析方法，对钢板在多股集管冲击射流作用下的温度场分布进行了数值模拟，得到钢板横向冷却曲线，为无约束淬火机上集管的工艺设计提供了理论依据。

The influence of several parameters including injection rate of nozzle exit, the ratio of length between nozzle and inner gular tube, the ratio of length between gular tube and it's inner diameter and back pressure on the performance of gas solid injector is analyzed.

分析了喷嘴出口射流速度、喉嘴距、混合管段尺寸及背压等参数对气固喷射器性能的影响，结果表明：存在最佳的喷嘴出口射流速度、喉嘴距以及喉管长与其内径之比使得固气比达到最大值；而背压的增加则不利于提高喷射器性

The oscillation performance of jet, as oscillation frequency, is the essential data for designing the fluidic device, which is also the key factor that influence the coupling effect of fluidic device and receiving tube. This paper does experiment on the oscillation availability and frequency of feedback jet-oscillation gas wave refrigeration. As a conclusion, the jet oscillates only in a certain range of geometrical sizes and operating conditions. Under the condition of high pressure ratio, the frequency of the jet"s oscillation is only affected by the feedback tube"s length and chamber remarkably. Under the condition of low pressure ratio, the frequency descends with rise of the pressure ratio.

本文将跨音速正反馈射流振荡器与接受管耦合，对耦合后的射流振荡气波制冷机的可振性、振荡频率以及它们的影响因素作了实验研究，得出如下结论：射流只在一定的操作条件和几何结构尺寸范围内才能稳定振荡；射流的振荡频率在较高压比下只受反馈管长和反馈管容腔大小的显著影响，在小压比下随压比的增大而增加；其它结构尺寸和操作条件只影响可振性。

The influence of outlet port clearance is explored. The change of receiving tube length mainly results in the variation of the highest oscillation-availability ratio of pressure and tube response.

多管式射流振荡气波制冷机相比双管式更具有工业应用价值，故本文对正反馈式多管射流振荡气波制冷机进行了数值模拟分析。

The actual production needs from oil field,aimed at tractor hoist that need replace pipe string and outside slippery jet pump that isn′t satisfied with discharge fracturing quickly in reality,a new type of jet pump inside sleeve type of jet pump is designed.

针对外滑套式射流泵在油田应用中不能满足压裂后快速排液的现况，研制出了一种新型的内滑套式射流泵，并提出了射流泵、喉嘴距、喉管长度、扩散管角度及长度的计算公式。

Since 1985, the first in the country to produce jet pipe servo vlve 704 in this re he continued to explore nd ccumulte.

自1985 年在国内生产出第一个射流管伺服阀，七？四所就不断在这个领域中探索、积累。

This article used a method, which established shrinkage pipe at the jet flow outlet, so as to enhance the jet fans outlet injection velocity.

本文采用在射流风机出口设置收缩管以提高射流速度的方法。

In order to improve aspiration-efficiency of the jet aerator, an air-in pipe called inner pipe was set up to add one more aspiration in the aerator muzzle.

为提高射流增氧机的吸气效率，在其射流器喷嘴内增设吸气管以增加一次吸气。

The solar energy , air , fluid generate electricity , air attracts the jet pipe , the spotlight reflected light slot.

太阳能，空气，流体发电，空气引射射流管，聚光反射光槽。

To dte, t Valves he Institute reserchers he developed out of six series, more thn 60 specifictions of the jet pipe servo vlve, while the product filure rte from the originl more thn 30% to 3% or less.

迄今为止，该所科研人员已研发出了6个系列、60多个规格的射流管伺服阀，同时将产品故障率从原先的超过30%降到了3%以下。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐