摘要：【中文】本发明公开了一种管道漏点的检测方法及装置、存储介质、终端，涉及管道检测技术领域，主要目的在于解决现有管道漏点的检测是利用故障诊断检测器检测管道上的压力、流量等测量信号来检测小于当前输量1％的泄漏、缓慢泄漏和多点泄漏的问题。包括：获取输送液体管道的管道参数，根据所述管道参数建立管道模型；利用所述管道模型及非线性故障诊断观测器检测所述管道中的泄漏点；当检测到所述非线性故障诊断观测器中的估计误差渐进收敛至零时，确定检测结果为多点泄漏；计算残差信号，根据所述残差信号及所述非线性故障诊断观测器的泄漏系数估计条件确定出多个泄漏点的泄漏系数，以确定管道泄漏点的泄漏数据。 【EN】The invention discloses a method and a device for detecting a pipeline leakage point, a storage medium and a terminal, relates to the technical field of pipeline detection, and mainly aims to solve the problem that the leakage point of the existing pipeline is detected by detecting measurement signals such as pressure, flow and the like on a pipeline by using a fault diagnosis detector to detect leakage, slow leakage and multi-point leakage which are less than 1% of the current output. The method comprises the following steps: acquiring pipeline parameters of a pipeline for conveying liquid, and establishing a pipeline model according to the pipeline parameters; detecting a leak in the pipeline using the pipeline model and a nonlinear fault diagnosis observer; when the estimation error in the nonlinear fault diagnosis observer is detected to gradually converge to zero, determining that the detection result is multipoint leakage; and calculating a residual signal, and determining leakage coefficients of a plurality of leakage points according to the residual signal and the leakage coefficient estimation condition of the nonlinear fault diagnosis observer so as to determine leakage data of the pipeline leakage points.

摘要：【中文】本发明公开了一种基于超声波声速的管道泄漏定位方法及装置，包括以下步骤：建立待测流体输送管道超声波声速与管道内部压力之间的数学关系式；在待测流体输送管道首末站安装超声波传感器并采集超声波声速信号；获取泄漏点产生的超声波信号传送至流体输送管道首末站的时间差；采用到达流体输送管道首末站的超声波声速信号拐点的时间差与负压波波速，计算泄漏点的位置。其装置包括超声波声速信号获取模块及计算模块。本发明提供一种基于超声波声速的管道泄漏定位方法及装置，其避免管道开孔安装压力变送器，是一种流体输送管道无损监测方法，同时其在对流体输送管道泄漏点定位时，利用管道首末站超声波声速信号拐点及负压波波速进行泄漏点定位，提高了利用超声波传感器进行流体输送管道泄漏检测及定位的可行性。 【EN】The invention discloses a pipeline leakage positioning method and device based on ultrasonic sound velocity, comprising the following steps: establishing a mathematical relation between the ultrasonic sound velocity of the fluid conveying pipeline to be measured and the internal pressure of the pipeline; installing an ultrasonic sensor at the head and tail stations of a fluid conveying pipeline to be detected and acquiring ultrasonic sound velocity signals; acquiring the time difference of transmitting ultrasonic signals generated by a leakage point to a first station and a last station of a fluid conveying pipeline; and calculating the position of a leakage point by adopting the time difference of the inflection point of the ultrasonic sound velocity signal reaching the first and last stations of the fluid conveying pipeline and the wave velocity of the negative pressure wave. The device comprises an ultrasonic sound velocity signal acquisition module and a calculation module. The invention provides a pipeline leakage positioning method and device based on ultrasonic sound velocity, which avoids installing a pressure transmitter on a pipeline opening, is a nondestructive monitoring method for a fluid conveying pipeline, and simultaneously positions a leakage point by using an ultrasonic sound velocity signal inflection point and negative pressure wave velocity of a pipeline head and tail station when positioning the leakage point of the fluid conveying pipeline, thereby improving the feasibility of detecting and positioning the leakage of the fluid conveying pipeline by using an ultrasonic sensor.

摘要：【中文】一种高温金属3D打印机窗口镜结构，支撑环的右边成型有第四进气管、第五进气管和第六进气管，第四进气管、第五进气管和第六进气管均与右进气管相通接；支撑环的中心孔的内壁上成型有台阶，窗口镜夹持在台阶与压板之间，压板通过螺钉固定在支撑环上，接盘通过螺钉固定在支撑环的下端且置于箱体中，接盘的外径面与支撑环之间形成通气通道，接盘的外径面上成型有气槽，通气通道与气槽相通接，接盘的中心孔与窗口镜相对；它可以对窗口镜在水冷降温的同时也进行气冷降温，确保窗口镜在高温环境下正常工作。扫描振镜也不会因为温度过高而无法正常工作。 【EN】A high-temperature metal 3D printer window mirror structure is characterized in that a fourth air inlet pipe, a fifth air inlet pipe and a sixth air inlet pipe are formed on the right side of a support ring, and the fourth air inlet pipe, the fifth air inlet pipe and the sixth air inlet pipe are communicated with a right air inlet pipe; the inner wall of the central hole of the support ring is formed with steps, the window mirror is clamped between the steps and the pressing plate, the pressing plate is fixed on the support ring through screws, the flange is fixed at the lower end of the support ring through screws and is arranged in the box body, a ventilation channel is formed between the outer diameter surface of the flange and the support ring, an air groove is formed on the outer diameter surface of the flange, the ventilation channel is communicated with the air groove, and the central hole of the flange is opposite to the window mirror; the window mirror cooling device can cool the window mirror in a water cooling mode and cool the window mirror in an air cooling mode, and normal work of the window mirror in a high-temperature environment is guaranteed. The scanning galvanometer cannot work normally due to overhigh temperature.

摘要：【中文】一种高温金属3D打印机，保护镜和扫描振镜均固定在箱体上，保护镜上的激光从热反罩上的热反罩孔中穿过，保护镜与成型缸相对；底板的下部固定有第一外罩，成型缸的外部固定有加热丝，第一外罩与成型缸之间填充有保温体，成型缸的出口露出第一外罩的外表面，活塞插套在成型缸中，基板固定在活塞的上端，活塞的下端固定有接管，托板挡在接管的出口处，第一电机的转轴上固定有第一丝杆，第一丝杆与托板螺接在一起；它结构简单，驱动装置置于高温箱体外，能将成形缸最高加热至550℃，对金属粉末进行整体加热预热。 【EN】A high-temperature metal 3D printer is characterized in that a protective mirror and a scanning galvanometer are fixed on a box body, laser on the protective mirror penetrates through a hot reflecting cover hole in a hot reflecting cover, and the protective mirror is opposite to a forming cylinder; a first outer cover is fixed on the lower portion of the bottom plate, a heating wire is fixed on the outer portion of the forming cylinder, a heat insulator is filled between the first outer cover and the forming cylinder, an outlet of the forming cylinder is exposed out of the outer surface of the first outer cover, the piston is inserted in the forming cylinder, the base plate is fixed at the upper end of the piston, a connecting pipe is fixed at the lower end of the piston, the supporting plate is blocked at the outlet of the connecting pipe, a first lead screw is fixed on a rotating shaft of the first motor, and the first lead screw is in threaded connection with the supporting plate; the device has simple structure, and the driving device is arranged outside the high-temperature box body and can heat the forming cylinder to 550 ℃ at most to integrally heat and preheat the metal powder.

摘要：【中文】改善增材制造金属组织与性能的微锻造装置，托板插套在基座的基座插槽中，托板的下端与第二支架固定在一起，第二支架为框形支架且具有上架板和下架板，振动架成型有方形的振动架中心孔，打印头的下部置于振动架中心孔中；轴箱通过螺钉与振动架固定在一起，振动架的下部焊接或通过螺钉固定有第三支架，第三支架的下部焊接或通过螺钉固定有安装板，安装板的下部焊接或通过螺钉固定有锻锤，打印头的下部伸入第三支架、安装板和锻锤的中心孔，第三支架为圆筒状，安装板为环片状；它对打印头打印成型的工件直接跟随进行快速锻打，加工出的产品质量比直接锻造的产品的硬度和强度经检测要好。 【EN】A micro forging device for improving the metal structure and performance of additive manufacturing is characterized in that a supporting plate is inserted and sleeved in a base inserting groove of a base, the lower end of the supporting plate is fixed with a second support, the second support is a frame-shaped support and is provided with an upper frame plate and a lower frame plate, a square vibration frame center hole is formed in a vibration frame, and the lower portion of a printing head is arranged in the vibration frame center hole; the axle box is fixed with the vibration frame through a screw, the lower part of the vibration frame is welded or fixed with a third bracket through a screw, the lower part of the third bracket is welded or fixed with a mounting plate through a screw, the lower part of the mounting plate is welded or fixed with a forging hammer through a screw, the lower part of the printing head extends into central holes of the third bracket, the mounting plate and the forging hammer, the third bracket is cylindrical, and the mounting plate is annular; the rapid forging method is used for rapidly forging a workpiece printed and formed by the printing head directly, and the quality of the processed product is better than that of a directly forged product in hardness and strength through detection.