冲击器

According to the operating characteristic of the fluidics and the theory of hydromechanics, a dynamic model of the impactor is established, in order to bring the percussive rotary drilling technology into full play. Also a simulation program is developed to calculate the working properties of the impactor. By using the simulation program, the variation laws of the basic parameters of the hydraulic impactor under different structural parameters and hydraulics are obtained.

为充分发挥冲击旋转钻井技术的应用效果，在考虑射流元件工作特性的基础上，运用流体力学理论建立了液动冲击器工作动力学模型，并编制了计算液动冲击器性能参数的模拟程序，通过模拟计算程序得到了在不同液动冲击器结构参数和钻井水力参数下液动冲击器基本参数的变化规律。

Based on the analysis of piston rebounding with the theory of wave mechanics,this paper introduces the fuzzy controller of nitrogen inflating hydraulic impactor .

以冲击波动力学对冲击器活塞反弹现象的分析为依据，设计出氮爆式液压冲击器模糊控制器，通过仿真和实验证明了此控制器的有效性和实用性，并在此基础上实现了冲击过程的智能

Based on the analysis of piston rebound ing with the theory of wave mechanics,this paper introduces the fuzzy controller of nitrogen inflating hydraulic impactor.

以冲击波动力学对冲击器活塞反弹现象的分析为依据，设计出氮爆式液压冲击器模糊控制器，通过仿真和实验证明了此控制器的有效性和实用性，并在此基础上实现了冲击过程的智能

The dynamic model can not only help to improve the design of the impactor, but also help to determine its working properties and design the percussion drilling bottom hole assembly.

该动力学模型不仅可用于改进液动冲击器的设计，而且可用于优选液动冲击器的性能参数和冲击钻井钻具组合设计。

The major structures, critical components and performance parameters of steel ball percussion device and hydraulic percussion device were designed and calculated on the basis of study on rock broken mechanism of rotary percussion drilling, which make it is more scientific and reasonable of design of the two percussion devices.

在研究回转冲击钻进破岩机理的基础上，对球体冲击器及节水型液动冲击器系统的主要结构、关键部件及性能参数进行了理论设计与计算，使得两种冲击器的设计更具科学性、合理性。

The main returns are as follows: 1. A set of water-saving, quick and safe rotary percussion self-contained drilling tools and drilling technique used in drought water scarce areas were developed under the new idea combine water-saving drilling with rotary percussion drilling, which includes pneumatic steel ball percussion device used see before formation water and water-saving hydraulic percussion device used see after formation water.

主要研究成果： 1、从&节水钻探&和&回转冲击钻进&相结合的新思路出发，研制了一套适用于干旱缺水地区的节水型回转冲击配套钻具及其钻进工艺方法，包括见到地层水之前使用的球体冲击器及见到地层水之后使用的节水型液动冲击器系统。

Taking a general view of the paper, major innovative ideas and returns are as follows: The main innovative ideas are as follows: 1. The paper put forward the new idea that combine water-saving drilling with rotary percussion drilling creatively according to the present situation of water resource lack seriously and the background of implementation of state geological survey strategy. 2. The working principle of new designed system of water-saving hydraulic percussion device completely different from traditional hydraulic percussion device, the system can carry out rotary percussion drilling on the condition that no surface water be consumed, and achieve the purposes that saving surface water, cutting cost and improving drilling efficiency. 3. The design conception of steel ball percussion device is very novel, the percussion device is durable, with a simple structure, at the same time drilling efficiency would be improved highly and drilling cost would be reduced greatly when drill with the steel ball percussion device.

综观全文，论文的主要创新点及研究成果如下：主要创新点： 1、结合我国许多地区水资源严重短缺的现状以及国家实施地质大调查战略的背景，创造性地提出了&节水钻探&和&回转冲击钻进&结合起来的新思维； 2、设计出的节水型液动冲击器系统，其工作原理跳出了传统液动冲击器要消耗大量地表水的原理模式，在基本不消耗地表水的情况下便能实现回转冲击钻进，达到节约地表水、降低成本、提高钻探效率的目的； 3、设计的球体冲击器构思新颖，克服了同类产品冲击功传递效率低的弊端、且结构简单、经久耐用，可大幅度提高钻探效率、降低钻探成本。

By analysising the datum in different prestressing force of piston spring shows that raising the prestressing force of piston spring only have a small influence on stroke time to keep the other paramters in costant, but the back stroke time will be decreased and the frequency, the percussive energy and the hydraulic efficiency will be increased rapidly.

对不同锤簧予压力下液动冲击器性能变化的试验数据处理、分析得出：在保持液动冲击器的其它参数一定时，增加锤簧予压力对冲程时间影响不大，但可以大大缩短返程时间，大幅度提高冲击频率、冲击功和液动冲击器的水力利用效率，增加锤簧的予压力是提高液动冲击器性能的一种有效手段。

When the speed of piton changes from several positive meters per second to negative during short time , a huge transient impacting force acts on the piston. The force spreads in the piston with stress wave. Converging force will become at some sections, which can destroy the piston.

从风动冲击器的工作原理可以得知，风动冲击器的活塞在高压气流的推动下，反复冲击钻头，冲击时活塞的速度由向下的几米每秒在极短时间内反弹为向上的速度，因而对活塞产生一个极大的瞬时冲击力，该力以应力波的形式在活塞内传播，就会在活塞的某些断面产生应力集中，造成活塞的破坏。

Adjust the pressure of the impact system steplessly, the strike energy of the hammer will also shift steplessly. When the pressure is higher, the strike energy is higher. When the pressure is lower, the strike energy is lower. Adjust the oil flow of supply pump steplessly, the strike frequency will also shift steplessly. When the flow is more, the strike frequency is higher. When the flow is less, the strike frequency is lower.

从而可通过无级调节控制冲击系统的压力，无级调节控制冲击器的冲击能，压力高时冲击能大，压力低时冲击能小；通过无级调节控制油泵供给冲击系统的流量，无级调节控制冲击器的冲击频率，流量大时冲击频率高，流量小时冲击频率低。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。