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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越图饲5151在给排水中,用什么表示管道中心标高? -
俞冰厕13757334330 ______ 在给排水中,CL表示管道中心标高.centre level. 一根直管的中心线长度就是这根管长,然而对于一根弯曲的管,它的中心线长则需通过计祘得岀,计祘式: 弯曲半径x兀/180x弯曲夹角度数=弯曲段中心线长《 上式中的“弯曲半径”是指管子的中心点至半径园心点的尺寸.》有直段又有弯曲段的管道中心线长度就是前两者之和.

越图饲5151高区和低区消防平面图管线用什么字母表示 -
俞冰厕13757334330 ______ 高区和低区消防管线表示一般都是用GX和DX分别代表,因为消防管道代号是X,也就是消的首拼字母,所以前面加G代表高区,加D代表低区 ,都是采用拼音的第一个字母添加的

越图饲5151管道尺寸标注中:φ90*5 s, -
俞冰厕13757334330 ______[答案] 道尺寸标注中:φ90*5 s,后面的字母s管道的规定代号应该是: 油管线 Y 油气混输油气混输 YM 原油管线 Y1 含水原油管线 SY 天然气管线 M 给水管线 S 排水管线 X 循环冷却水 XH 蒸汽管线 Z 热水管线 R 生产热水管线 R1 热水回水管线 R4 回水管线...

越图饲5151有哪位高人知道给排水图纸字母符号有哪些!该怎样识别…
俞冰厕13757334330 ______ 说说一般常用的: 给水管道-J,如果分高低区通常用首字母表示即高区-G,低区-D. 排水管道-W,表示污水.也有-F,就是废水.很少见有用-P表示的. 消火栓管道-XH. 自动喷淋管道-Z或者-ZP. 雨水管道-Y. 采暖管道-R,一般实线表示供水管,虚线表示回水管. 压力排水-PY. 冷凝水管道-N. 管道立管-L. 另外设备的型号字母: Q-流量或者风量 H-扬程 N-功率 P-压力 QW-潜污泵 其他阀门、器具之类的都是用图形区分. 先说这么多吧,都是常用的,一般设计院出的图纸说明上都有列表标识的很清楚.如果还有什么看不懂的请LZ问题补充一下,或者Hi我. 希望对你能有帮助.

越图饲5151室外给水管道图中标注PM▽5.5.▽5.5是标高,PM是什么 -
俞冰厕13757334330 ______ 是管道截面中心线的标高

越图饲5151工艺管道的HD 和AT是什么 -
俞冰厕13757334330 ______ 工艺管道中HD表示 地面标高 ,AT表示填方面积 . 工艺管道是为满足一定的生产工艺而连接起来的管道,并没有很明确的定义,一般民用建筑、工业厂房里除了生活给排水管道、消防管道、雨排水管道其它的都可以划到工艺管道里,比如生产循环水、压缩空气、蒸汽、氮气、煤气、硫酸、碱液、氨水、氨气等等.

越图饲5151给排水管道标高其中H是指什么标高
俞冰厕13757334330 ______ 给排水管道标高其中H 是指海拔标高.

越图饲5151在管道平面图上,EL代表的是管底的标高,还是管中的标高? -
俞冰厕13757334330 ______ 给排水总说明上必须有明确的说明.一般习惯是排水管标注管底标高,给水管标注管中心标高.

越图饲5151管道等级代号L1B、N1B究竟是什么意思? -
俞冰厕13757334330 ______ HG20591-92规定的管道等级:＂ 管道等级号三个单元组成:＂＂ M 2 B＂ ＂ ＂＂ | | |＂ ＂ ＂＂ 公称压力 顺序号 管道材质＂＂------------------------------------- ＂＂ ＂ ＂ 压力等级＂＂ L - 1.0 MP ＂＂ M - 1.6 MP ＂＂ N - 2.5 MP ＂ ＂ P - 4.0 MP ＂...