摘要：【中文】本发明公开了一种大型邮轮供水系统及离心泵防气蚀装置，大型邮轮供水系统包括饮用水舱、离心泵防气蚀装置和离心泵，所述离心泵防气蚀装置包括第一水箱、第二水箱和离心装置，第一水箱设于第二水箱内上部，第一水箱顶部延伸到第二水箱顶部外，离心装置设于第一水箱内，第一水箱上部侧壁通过进水管与饮用水舱底部相连，第一水箱侧壁设于若干与第二水箱内连通的透水孔，第二水箱底部通过离心泵进水管与离心泵的入口相连，所述第一水箱和第二水箱顶部高点处分别设有第一水箱排气管和第二水箱排气管，第一水箱排气管和第二水箱排气管顶部连接单向排气阀。本发明可以使液体中混入的气泡充分排出，有效减少大型邮轮供水系统中离心泵气蚀现象的发生。 【EN】The invention discloses a large-scale mail steamer water supply system and a centrifugal pump anti-cavitation device, wherein the large-scale mail steamer water supply system comprises a drinking water cabin, the centrifugal pump anti-cavitation device and a centrifugal pump, the centrifugal pump anti-cavitation device comprises a first water tank, a second water tank and a centrifugal device, the first water tank is arranged at the upper part in the second water tank, the top of the first water tank extends out of the top of the second water tank, the centrifugal device is arranged in the first water tank, the side wall of the upper part of the first water tank is connected with the bottom of the drinking water cabin through a water inlet pipe, the side wall of the first water tank is provided with a plurality of water permeable holes communicated with the second water tank, the bottom of the second water tank is connected with an inlet of the centrifugal pump through a water inlet pipe of the centrifugal pump, a first water tank exhaust pipe and a second water tank exhaust pipe are respectively arranged at the high points. The invention can fully discharge the bubbles mixed in the liquid and effectively reduce the occurrence of the cavitation phenomenon of the centrifugal pump in the large-scale cruise ship water supply system.

摘要：【中文】本发明涉及一种船舶开式水润滑尾轴承试验台，包括：第一底座，其设置在工作台上；驱动装置，其固定在第一底座上，其依次与扭矩传感器和传动轴连接；水箱，其设置在工作台上，传动轴上背离所述扭矩传感器的一端穿过所述水箱的侧壁伸入至水箱中，传动轴与水箱侧壁之间设置有密封装置；水润滑轴承装置组，其设置在所述传动轴伸入至水箱中的轴段上；加压装置，其包括设置在工作台上的加压支架以及设置在加压支架上且可对水润滑轴承装置组进行加压的加压组件，加压组件通过压力传感器设置在水润滑轴承装置组背离工作台的端面上。本发明能更真实地模拟开式水润滑轴承的工作环境和尾轴弯曲对水润滑轴承性能的影响，从而能更加真实有效的评测轴承性能。 【EN】The invention relates to a ship open type water lubrication tail bearing test bed, which comprises: a first base disposed on the table; the driving device is fixed on the first base and is sequentially connected with the torque sensor and the transmission shaft; the water tank is arranged on the workbench, one end of the transmission shaft, which is deviated from the torque sensor, penetrates through the side wall of the water tank and extends into the water tank, and a sealing device is arranged between the transmission shaft and the side wall of the water tank; the water lubrication bearing device group is arranged on a shaft section of the transmission shaft extending into the water tank; and the pressurizing device comprises a pressurizing support arranged on the workbench and a pressurizing assembly arranged on the pressurizing support and capable of pressurizing the water lubrication bearing device set, and the pressurizing assembly is arranged on the end surface of the water lubrication bearing device set, which deviates from the workbench, through a pressure sensor. The invention can simulate the working environment of the open type water lubricated bearing and the influence of the bending of the tail shaft on the performance of the water lubricated bearing more truly, thereby evaluating the performance of the bearing more truly and effectively.

摘要：【中文】本发明公开了一种纤维定向分布增强高分子水润滑轴承基材热压制备方法及热压成型模具，热压成型模具包括下模板、多层模板、导向柱、螺母、压套、排针和上模板，首先将多层模板的多个薄板依次通过导向机构放置在下模板上，在放置薄板过程中，每放置一层薄板，在该层薄板上的排针上缠绕一层纤维，使得纤维在型腔内定向分布，并在该层薄板中间的型腔内填充高分子胚料，在最后一层纤维上压上最顶层的薄板。之后在排针处剪断纤维，并使用锁紧机构锁紧多层模板；之后盖上压套和上模板，将上述装填好物料的热压成型模具通过热压成型得到纤维定向分布增强高分子水润滑轴承基材。本发明制作方法简单、操作方便、成本低、纤维定向效果好、应用前景广阔。 【EN】The invention discloses a hot-pressing preparation method of a fiber directional distribution reinforced high-molecular water-lubricated bearing base material and a hot-pressing forming die. Then cutting off fibers at the pin header, and locking the multilayer template by using a locking mechanism; and then covering a pressing sleeve and an upper template, and carrying out hot-press forming on the hot-press forming die filled with the materials to obtain the fiber oriented distribution reinforced polymer water-lubricated bearing base material. The invention has the advantages of simple manufacturing method, convenient operation, low cost, good fiber orientation effect and wide application prospect.

摘要：【中文】本发明公开了一种多功能微型精密轴承实验平台，包括平台，以及设于平台上的测试底座、测试轴、传动机构和径向加载机构；所述测试底座上设一装有润滑油的油池，油池两端各配置一个轴承座，轴承座及油池的上方通过盖体密封构成一个密封壳体，测试轴的两端安装在设于轴承座内的端部轴承上；待测的微型精密轴承与位于密封壳体内的测试轴相适配，微型精密轴承上安装温度传感器和声发射传感器，微型精密轴承浸没于油池的润滑油内；所述测试轴的一端伸出密封壳体与传动机构的输出端同轴适配；所述径向加载机构设于密封壳体的上部，其输出端与微型精密轴承的外周面顶紧。本发明的有益效果为：本发明可实现多工况下对微型精密轴承摩擦磨损情况的实验研究，投资及运行成本低。 【EN】The invention discloses a multifunctional miniature precision bearing experiment platform, which comprises a platform, a test base, a test shaft, a transmission mechanism and a radial loading mechanism, wherein the test base, the test shaft, the transmission mechanism and the radial loading mechanism are arranged on the platform; an oil pool filled with lubricating oil is arranged on the test base, two ends of the oil pool are respectively provided with a bearing seat, the upper parts of the bearing seats and the oil pool are sealed by a cover body to form a sealed shell, and two ends of the test shaft are arranged on end bearings arranged in the bearing seats; the miniature precision bearing to be tested is matched with a testing shaft positioned in the sealed shell, a temperature sensor and an acoustic emission sensor are arranged on the miniature precision bearing, and the miniature precision bearing is immersed in lubricating oil in the oil pool; one end of the test shaft extends out of the sealing shell and is coaxially matched with the output end of the transmission mechanism; the radial loading mechanism is arranged at the upper part of the sealing shell, and the output end of the radial loading mechanism is tightly propped against the peripheral surface of the miniature precision bearing. The invention has the beneficial effects that: the invention can realize the experimental study on the friction and wear conditions of the miniature precision bearing under multiple working conditions, and has low investment and operation cost.

摘要：【中文】本发明涉及一种应用于大型邮轮的组合式压力旋流开式细水雾喷头，包括：连接部，其包括依次固定连接且均中空的第一筒部、第二筒部以及第三筒部，第一筒部的侧壁上设置多个斜孔；过滤网筒，其通过紧配合的方式倒扣在第一筒部上以将第一筒部罩设在其内侧；喷嘴底座，其与第三筒部可拆卸连接，其上还设置多个喷嘴安装孔；以及多个喷嘴，其分别对应地安装在多个喷嘴安装孔内，喷嘴内沿其轴向设置有靠近喷嘴安装孔的第一锥形孔和与第一锥形孔连接的第二锥形孔，第一锥形孔的直径随着远离喷嘴安装孔逐渐减小，第二锥形孔的直径随着远离第一锥形孔逐渐增大。本发明各部件安装更换简便，便于易损零部件的储备，同时喷嘴喷出的水雾覆盖面积大，灭火效果好。 【EN】The invention relates to a combined pressure rotational flow open type water mist spray head applied to a large mail steamer, which comprises: the connecting part comprises a first cylinder part, a second cylinder part and a third cylinder part which are sequentially fixedly connected and are hollow, and a plurality of inclined holes are formed in the side wall of the first cylinder part; the filter screen cylinder is reversely buckled on the first cylinder part in a tight fit mode so as to cover the first cylinder part on the inner side of the first cylinder part; the nozzle base is detachably connected with the third cylinder part and is also provided with a plurality of nozzle mounting holes; and the nozzles are respectively and correspondingly arranged in the nozzle mounting holes, a first taper hole close to the nozzle mounting hole and a second taper hole connected with the first taper hole are arranged in the nozzle along the axial direction of the nozzle, the diameter of the first taper hole is gradually reduced along with the distance from the nozzle mounting hole, and the diameter of the second taper hole is gradually increased along with the distance from the first taper hole. The invention has the advantages that each part is simple and convenient to install and replace, the easily damaged parts are convenient to store, and meanwhile, the coverage area of the water mist sprayed by the nozzle is large, and the fire extinguishing effect is good.

摘要：【中文】本发明专利提出了一种单端暂态能量谱相似性的配电网故障区段定位方法。首先假设一暂态行波从变电站中压配电线路母线处注入配电网，记录母线处随后一段时间内的暂态电压响应波形，然后对采集到的暂态电压响应波形进行频谱分析，根据特征频率确定频率段的分割方案。据此，对配电网典型故障位置发生故障后母线处采样得到的暂态电压波形进行频谱分析，得到各频率段能量值，形成配电网故障区段定位数据库。一旦发生故障，对母线处记录的故障暂态波形进行分析，得到真实故障时各频率段能量值，匹配查找定位数据库，即可进行故障区段定位。该方法定位准确，不存在故障区间误判现象，满足故障区段定位工程需要，实用性好。 【EN】The invention provides a power distribution network fault section positioning method based on single-ended transient energy spectrum similarity. Firstly, a transient traveling wave is supposed to be injected into a power distribution network from a bus of a medium-voltage distribution line of a transformer substation, a transient voltage response waveform in a period of time at the bus is recorded, then, frequency spectrum analysis is carried out on the acquired transient voltage response waveform, and a frequency segment segmentation scheme is determined according to characteristic frequency. Therefore, after the typical fault position of the power distribution network fails, the transient voltage waveform obtained by sampling the bus is subjected to spectrum analysis, energy values of all frequency bands are obtained, and a power distribution network fault section positioning database is formed. And once a fault occurs, analyzing the fault transient waveform recorded at the bus to obtain the energy value of each frequency band in real fault, and matching and searching the positioning database to position the fault section. The method has accurate positioning, does not have the phenomenon of error judgment of a fault section, meets the requirement of fault section positioning engineering, and has good practicability.

摘要：【中文】本发明专利提出了一种配电网单相接地故障选相方法，即首先在单相接地故障发生后，对故障发生时刻前和故障发生时刻后的母线变压器低压侧三相电流进行采样；将各相在故障时刻后电流采样数据减去故障时刻前电流采样数据，得到各相电流故障突变量数据；然后对测量到的各相电流突变量进行归一化处理，并使用Hausdorff算法计算相间电流突变量相似系数；接着计算相平均相似度；然后计算相故障评价指标，具体为该相平均相似度与另外两相平均相似度差值绝对值之和；最后确定故障相判断阈值，故障评价指标高于故障相判断阈值的馈线为故障相。本发明提高了配电网单相接地故障选相的快速性和准确性。 【EN】The invention provides a phase selection method for a single-phase earth fault of a power distribution network, which comprises the steps of firstly sampling three-phase currents on the low-voltage side of a bus transformer before and after the fault occurrence time after the single-phase earth fault occurs; subtracting the current sampling data before the fault moment from the current sampling data after the fault moment of each phase to obtain fault break variable data of each phase current; then, normalizing the measured current break variables of each phase, and calculating the similarity coefficient of the phase current break variables by using a Hausdorff algorithm; then calculating the average similarity of phases; then calculating a phase fault evaluation index, specifically the sum of the absolute values of the difference values of the average similarity of the phase and the average similarity of the other two phases; and finally, determining a fault phase judgment threshold, wherein the feeder line with the fault evaluation index higher than the fault phase judgment threshold is the fault phase. The invention improves the rapidity and the accuracy of the phase selection of the single-phase earth fault of the power distribution network.