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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姜闵敬960电磁阀图号怎么看?
乜狭达17651515669 ______ 电磁阀图号上有几个框代表几个位置的,一般有2位和三位的,再看一个框里有几个接点,一般有三个或者五个,一般阀是有2位三通,2位5通单电控,2位5通双电控,3位5通中央封闭,3位5通中央排气,3位5通中央加压型的.3位5通都是双电控点磁头的,点磁头数量判断可以看图号上有点磁头的标记的

姜闵敬960暖通中的图列分别表示什么阀门? -
乜狭达17651515669 ______ 从左往右,截止阀(有些时候这是一个通用阀门的画法,没有特指哪个阀门,因为很多设计师自己也不知道装什么阀门,就意思一下),第二个是电磁阀,第三个不是阀门,而是软接

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姜闵敬960止回阀的表示符号是() - 上学吧技能鉴定
乜狭达17651515669 ______ 不是小三角,是角加小圆.小圆代表钢珠,角代表阀门,油从角方向来,就推开钢珠,油就可以自由流过,油从钢珠方向流进,则将钢珠推向阀门并将门堵住,油就无法通过,也就是油只能单向通过,很形象的.

姜闵敬960怎么由换向阀的简图分析换向阀是几通几位的?求解答 -
乜狭达17651515669 ______ 几种不同“通”和“位”的滑阀式换向阀主体部分的结构形式和图形符号的含义如下: (1) 用方框表示阀的工作位置,有几个方框就表示换向阀有几“位”; (2) 方框内的箭头“↑”表示换向阀相应的油路处于接通状态,但箭头方向不一定表示...

姜闵敬960图纸中阀门上标有M什么意思 -
乜狭达17651515669 ______ 图纸中阀门上标有M是指该阀门为电动阀门.键早M是英文单词motor的意思,motor可以翻译为马达、发动机等等.在图纸中,阀门上标的M外面一般还有个圆把M圈住,这个圆也是表示电机的意思. 电动阀门种类一般常规分类为:电动闸阀,电动截止磨亮扮阀,电动球阀,电动调节阀,电动蝶阀,电动柱塞阀,电动旋瞎灶塞阀,电动节流阀,电动排泥阀这几类.

姜闵敬960液压传动的换向阀的图形符号有什么方法可以容易记忆… -
乜狭达17651515669 ______ 我觉得不用记,看图就理解了.画图时,对照手册表上的图示选用就是了.

姜闵敬960二位三通电磁阀上哪个是进气? -
乜狭达17651515669 ______ 原发布者:huhyhit 二位三通电磁阀符号原理图解阀芯的事情位置有几个,该电磁阀就叫几位电磁阀:阀体上的接口,也就是电磁阀的通路数,有几个通路口,该电磁阀就叫几通电磁阀即两位是指有两个事情位置可切换,三通是有三个通道通气...

姜闵敬960阀门上有字母FYV和WCB是什么意思?是不同类型的阀门么
乜狭达17651515669 ______ WCB是铸的碳钢,WCB的锻件是A105.在阀门上写是表示阀体材料,阀门别的部件可能是别的材料FYV应该是该阀门的商标