封头

该工艺主要材料包括对拉螺栓、PVC套管、塑料封头、竖骨架、铝合金骨架等。

The main materials of this technology are split bolt , PVC casing , plastic head , vertical skeleton and aluminum alloy skeleton .

爆炸焊不锈复合钢制压力容器和封头RT波状裂纹的试验研究

The Researching Report of Undulance ' Crack ' on RT Negation of Explosive Welding Stainless Complex Steel Pressure Vessel and Head Plate

压力容器封头非测地线缠绕的CAD

A CAD program for non-geodesic winding on the mandrels of the pressure vessel

采用ANSYS的烘筒S形封头优化设计及其参数化分析

Optimum design and development of parameterized analysis program for S-head structure of drying cylinder based on ANSYS

基于ANSYS压力容器筒体与平板封头焊缝残余应力有限元分析

The Finite Element Analysis on the Weld Residual Stress of the Pressure Vessel Cylinder and Plate Dome Based on ANSYS

界面脱胶圆夹杂对SH波散射的远场解椭球体的封头，椭圆封头

Far field solution of SH-wave scattered by an interface cylindrical inclusion with disconnected curve

本文在ANSYS软件上经二次开发后，对带直边半球形厚壁封头的冲压成形过程进行了二维有限元模拟。

In this paper , the forming process of the spherical thick wall head hot stamping was simulated with ANSYS using 2-dimensional finite elements .

文摘：围绕k值展开讨论，提出一种符合现行标准、规程要求的标准椭圆封头拼接焊缝的射线探伤工艺。

Abstract : by a discussion on K value , the radiographic technology for thebutt welds in standard elliptic sealing heads consistent with current standards and regulations is presented .

压力容器设备中法兰与筒体、法兰与接管连接处的C类焊缝和封头端部、筒体上马鞍形的D类焊缝是最为不规则的且施焊工艺最为复杂的焊缝。

In pressure vessels , C and D seam which are located at the joint of flange , tube-shape object , jointed tube , and head of pressure vessels separately are the most complex seams .

C型封头的不均匀参数SU和最大流速与最小流速之比θU最低；

Flow maldistribution parameter S_ ( U ) and the ratio of the maximum velocity to the minimum velocity θ _U of the type C header configuration were minimum .

对以NA封头的“PMR型”聚酰亚胺溶液中产生的沉淀物进行了分离和鉴定。

The precipitate formed form NA capped PMR ( polymerization of the monomer react'ants ) polyimide solution was isolated and identified .

从实验结果中可以看出复合材料CNG气瓶在压力加载下的轴向应变和环向应变主要发生在筒身部分，具有较好的对称性，而且较为均匀，在封头和过渡区域的应变比较小。

With the experiment results , we can see axis-orientation strain and annulus-orientation strain are mainly happened around middle part of the cylinder .

利用粒子图像测速仪（PIV），对板翅式换热器封头结构改进前、后的流场进行了可视化研究分析。

Flow characteristics of flow field in the header of a plate-fin heat exchanger were investigated with particle image velocimetry ( PIV ) .

用TVD格式数值模拟了带平板封头爆炸容器的内部爆炸载荷的分布规律。

Numerical simulation was conducted to study the internal blast loading of explosion chamber with flat end using TVD schemes .

采用钢塑性有限元法，使用ANSYS有限元分析软件模拟了半球形厚壁封头冲压成形的整个过程，分析了成形后封头壁厚的变化规律。

Finite element analysis method of steel plasticity adopted , the drawing process of the head with thick wall was simulated with ANSYS software and the change rule of formed wall thickness was analyzed .

结果表明：对于前封头，由于含有Al2O3粒子而引起的驻点区热增量因子达4～6，计算得到的最大热流与实测热流接近；

The results show that , for the fore dome , the calculated maximum heat flow agree with the measured maximum heat flow and the augmentation factor can be 4 ~ 6 ;

标准椭球形封头螺纹烟管DZL系列锅炉设计

Design of Threaded Flue Tube DZL Series Boilers with Standard Elliptical Heads

依据我国JB4732-95《钢制压力容器&分析设计标准》，运用ANSYS软件对高压焊接试验舱封头斜管进行有限元应力分析设计。

In this paper , finite element stress analytical design of end socket chute on high pressure welding tester is carried out using ANSYS software according to Analytical Design Standards for Steel Pressure Vessels ( JB4732 - 95 ) .

得到了不同封头结构的物流分配不均匀特性与雷诺数之间的关系式.利用粒子图像测速仪（PIV），对板翅式换热器封头结构改进前、后的流场进行了可视化研究分析。

Flow distributions of header configurations in plate-fin heat exchangers with particle image velocimetry ( PIV ) The correlations of the flow maldistribution characteristic with Reynolds number are obtained under different header configurations .

对于平面缠绕封头，用Rung-Kutta方法和Simpson方法给出了数值解，从而实现了表格化。

For plane-wound head contour , numeral solution , which can be to make table , are derived by the Rung-Kutta method and the Simpson method .

针对目前椭圆形封头圆管插件展开CAD需要近似解析推导公式和参数化编程的情况，基于AutoCAD和UG工具软件进行二次开发，提出其圆管插件展开CAD的两种新方法，并给出应用实例。

Considering the actual method for drawing the developmental figure of the cylindrical branch of pipes on ellipsoidal head requiring analytical deriving and parametrical programming , two design methods based on AutoCAD and UG respectively are introduced , and a practical example is given too .

本文从标准椭圆封头在内压P作用下的受力分析出发，对GB150-1998《钢制压力容器》中关于椭圆封头开孔补强的有关条款的合理性进行了探讨，并提出了作者的建议。

Based on the internal force analysis of the ellipse heads to internal pressure , some rationality of GB150 & 1998 《 The Stell Pressure Vessel 》 for the reinforcement of openings were discussed in the paper .

[方法]通过金相、SEM和EDAX等先进显微分析技术及化学成份和机械性能检测等方法对封头-进口铁素体不锈钢棒进行检验和分析。

Using Metallographic , SEM , EDAX and other chemical and mechanical methods , imported ferrite stainless steel bars are detected and analyzed . It is found that there are a large number of sulfured manganese inclusions inside the sample bars .

介绍了在聚酯反应器夹套封头/端盖焊接上采用MAG焊的一些情况，着重介绍了如何从焊接工艺、焊接设备、焊接材料方面解决飞溅和成形问题。

This article introduces the welding on head / end cover of reactor , especially talks about how to solve the problems of spatter and shape from the aspects of welding process , welding equipment , welding materials .

并采用局部热负荷平衡型通道排列模型，来分析板翅式换热器通道排列的好坏。最后，本文运用商业软件FLUENT对板翅式换热器封头结构内部流场进行了稳态数值模拟。

The passage design model of local heat load balance is adopt . The author analyses which is The best passage arrangement . Finally , In this thesis , The header structure Fluid field distribution of Plate-fin heat exchanger is simulated using the commercial CFD code FLUENT .

通过对HP295焊瓶钢制作的钢瓶封头缺陷进行分析，找到了影响钢瓶封头拉延性能的原因。

The influencing factors of drawing properties for the cylinder end-heads were analyzed by checking out the defect of cylinder end-heads which made of HP295 steel .

稍晚的主泵轴封泄漏则将压力壳下封头损坏的时间推迟约3000s。

Contrarily , the vessel breach is predicted to be delayed about 3000 s by later RCP seal leak .

与GB150-1998《钢制压力容器》规定的锥形封头变径段进行比较，得出椭球壳变径结构具有较好的承载能力。

Compared with the knuckle of toriconical heads prescribed in the National Code " GB-1998 , STELL PRESSURE VESSELS ", the knuckle of ellipse shell has better pressure-enduring capacity .

1台体积为50m3低压搪瓷泄料槽筒体和封头连接部位，由于搪瓷化过程产生非自由热变形区，对其应力状况进行了分析测试。

The stresses at the non free thermal deformation zone of a 50 m 3 enamel vessel were tested . The deformation occurs in the joints of the shell and the head .

概述了新型FWX20容器封头旋压机的运动及结构特点和主要技术性能。

The motion situation , structure feature and main technique properties of a new type of rotary pressure machine for forming container head ( FWX20 ) are introduced in this paper .