线型及其含义：

比例：

水、汽管道代号：

工艺管道施工图常用图例：

水、汽管道阀门和附件图例：

给排水、采暖常用图例：

通风空调工程常用图例：

风道代号：

风道、阀门及附件图例：

风口和附件代号：

暖通空调设备图例：

调控装置及仪表图例：

各种执行机构可与风阀、水阀组合 表示相应功能的控制阀门。

消防工程基本图形符号：

消防工程辅助符号：

消防工程灭火器符号：

消防管路及配件符号：

消防工程固定灭火器系统符号：

消防工程灭火设备安装处符号：

消防设施：

消防工程自动报警设备符号：

管道图例：

管道附件：

管道连接：

管件：

常见阀门：

给水配件：

小型给水排水构筑物：

给水排水设备：

仪表：

管道和设备布置平面图、剖面图示例：

管道和设备布置平面图应按假象除去上层板后俯视规则绘制，其相应的垂直剖面图应在平面图中表明剖切符号。

标准层平面图

平、剖面示例

平面图、剖面图索引符号的画法：

平面图、剖面图中的局部需另绘详图时，应在平、剖面图上标注索引符号。索引符号的画法见下图。

索引符号的画法

内视符号画法：

当表示局部位置的相互关系，在平面图上应标注内视符号。

内视符号画法

系统编号：

1、一个工程设计中同时有供暖、通风、空调等两个及以上的不同系统时，应进行系统编号。

2、暖通空调系统编号、入口编号，应由系统代号和顺序号组成。

3、系统代号用大写拉丁字母表示，顺序号用阿拉伯数字表示。当一个系统出现分支时，可采用下图的画法。

系统代号

立管号的画法

竖向布置的垂直管道系统，应标注立管号，在不一致引起误解时，可只标注序号，但应与建筑轴线编号有明显区别。

立管号的画法

管道相对标高的画法：

1、在无法标注垂直尺寸的图样中，应标注标高。标高应以m为单位，并应精确到cm或mm。

2、标高符号应以直角等腰三角形表示。当面标准层较多时，可只标注与本层楼（地）板面的相对标高。

3、水、汽管道所标高未予说明时，应表示为管中心标高。

4、水、汽管道标注管道外底或顶标高时，应在数字前加“底”或“顶”字样。

5、矩形风管所注标高应表示管底标高；圆形风管所注标高应表示管中心标高。当不采用此方法标注时，应进行说明。

6、平面图中无坡度要求的管道标高可标注在管道截面尺寸后的括号内。必要时，应在标高数字前加“底”或“顶”的字样。

相对标高的画法

管道截面尺寸的标注符号及画法：

1、低压流体输送用焊接管道规格应标注公称通径或压力。公称通径的标记应由字母“DN”后跟一个以亳米表示的数值组成；公称压力的代号应为“PN”。

2、输送流体用无缝钢管、螺旋缝或直缝焊接钢管、铜管、不锈钢管，当需要注明外径和壁厚时，应用“D（或Φ）外径×壁厚”表示。在不致引起误解时，也可采用公称通径表示。

3、塑料管外径应用“de”表示。

4、圆形风管的截面定型尺寸应以直径“Φ”表示，单位应为mm.

5、矩形风管（风道）的截面定型尺寸应以“A×B”表示。“A”应为该视图投影面的边长尺寸，“B”应为另一边尺雨。A、B单位均应为mm。

6、水平管道的规格宜标注在管道的上方；竖向管道的规格宜标注在管道的左侧。双线表示的管道，其规格可标注在管道轮廓线内。

管道截面尺寸的画法

多条管线的规格标注方法：

多条管线规格的画法

风口、散流器表示方法：

风口、散流器的表示方法

定位尺寸的表示方法：

定位尺寸的表示方式

单线管道转向的画法：

单线管道转向的画法

双线管道转向的画法：

双线管道转向的画法

单线管道分支的画法：

单线管道分支的画法

双线管道分支的画法：

双线管道分支的画法

送风管转向的画法：

送风管转向的画法

回风管转向的画法：

管道断开的画法

平面图、剖视图中管道因重叠、密集需断开时，应采用断开画法。

管道断开的画法

管道在本图中断的画法：

管道在本图中断，转至其他图面表示（或由其他图面引来）时，应注明转至（或来自的）的图纸编号。

管道在本图中断的画法

管道交叉的画法：

管道交叉的画法

管道跨越的画法：

管道跨越的画法

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邓股费2765我在自学CAD,想问一下如何标注垂直方向上的数据?
乌聂舍18018722113 ______ 5、AUTO CAD快捷尺寸标注: DLI, *DIMLINEAR(直线标注) DAL, *DIMALIGNED(对齐标注) DRA, *DIMRADIUS(半径标注) DDI, *DIMDIAMETER(直径标注) DAN, *DIMANGULAR(角度标注) DCE, *DIMCENTER(中心标注) DOR, ...

邓股费2765CAD画一个箭头怎样和直线垂直 -
乌聂舍18018722113 ______ 直接用构造线命令来画.构造线里的其中一个指令就是利用现有的一条直线作为基准,来画出和它成指定角度的另外一条线的.

邓股费2765CAD 一个倾斜的图,怎么变成垂直的?? -
乌聂舍18018722113 ______ 1、首先在需要变成垂直的图像旁边画两条垂直的线段,如图 2、按alt加空格 3、选择需要变成垂直的对象,然后按空格 4、选择图像上的一点,连接到垂直的线段上,并对图像上另一个店进行同样操作 5、操作完成后按回车键,可以看到这个倾斜的图,已经变成垂直的了

邓股费2765CAD这些符号是什么??怎么设置的?又该怎么去除? -
乌聂舍18018722113 ______ 这些符号分别是参数化约束下的平行,垂直,竖直,等等.这是你画图时,把绘图区下方的第一个按钮“推断约束”开启了,根据你画的线,系统自动生成的约束.如果不是刻意要求约束,把这个按钮关了,以后就不会再出现了.对于这些已经成生的约束.或者是别人给你的图上有这些约束,你又不需要,全选它们的图元后,点“参数”下的“删除约束”,就可以把它们删除掉.

邓股费2765图中的垂直线怎么画 -
乌聂舍18018722113 ______ 1.拿一个三角尺,一个直角边与线重合,另一个直角边过点,然后沿着过点的直角边划线,在垂足处标上垂直符号

邓股费2765请问此CAD图纸应该如何标注平行,垂直,同心.初学者望指点 -
乌聂舍18018722113 ______ 用行为公差,在标注栏里面有,选好基准输入行为公差就可以了

邓股费2765cad符号标注快捷键 - cad快捷键
乌聂舍18018722113 ______ 1. cad快捷键1.F1: 获取帮助2.F2: 实现作图窗和文本窗口的切换3.F3: 控制是否实现对象自动捕捉4.F4: 数字化仪控制5.F5: 等轴测平面切换6.F6: 控制...

邓股费2765AutoCAD Mechanical 怎么画两条直线的垂足符号?请行家指教.就是两条垂直相交的直线,用垂足符号标上,除了做块和一笔一笔的画机械版有没有简捷方法? -
乌聂舍18018722113 ______[答案] 好像没有象做几何图那样的垂足符号“┓＂.但是注释→符号→形位公差符号中有“垂直度”符号不知是否你需要的.

邓股费2765cad图像箭头快捷键(CAD画箭头快捷键)
乌聂舍18018722113 ______ 1. CAD画箭头快捷键答:方法/步骤如下:1、打开CAD软件,在命令栏中输入“pl”,用回车键确定.2、指定箭头的起点.3、在命令栏中点击宽度(w),设置箭头宽度...

邓股费2765autocad 2009怎么标注竖直尺寸 -
乌聂舍18018722113 ______ 竖直的直接用标注、线性,斜的用标注、对齐.然后在标注样式里面可以修改些东西的.