船用空调通风安装工艺规范.docx

1、船用空调通风安装工艺规范船用空调通风系统安装施工工艺规范INSTALLATION AND CONSTRUCTION TECHNICAL RULESFOR MARINE AIR CONDITIONER & VENTILATION SYSTEM一、概述： General空调及通风系统中需要采用预隔热螺旋风管、单层螺旋风管、镀锌薄板矩形风管、板材焊接风管（钢质风管）及通风附件等，根据设计要求，落实风管及附件规格型号、数量，采用螺旋风管、镀锌方风管或板材焊接风管，严格按风管制作工艺和规范要求执行生产安装。The air conditioner and ventilation system shall

2、adopt the pre-insulated spiral air duct, single layer spiral air duct, galvanized sheet rectangle air duct, plate welded air duct (steel air duct) and ventilation accessories etc. According to the design requirements to determine the type and quantity of air duct and accessories, and select the suit

3、able air duct, i.e. spiral air duct, galvanized sheet square air duct or welded air duct. According to the relative constructure technical rules to manufacture and install.二、施工程序：三、风管制作 Manufacture the air duct (1) 镀锌矩形风管 Galvanized rectangle air duct镀锌矩形风管连接可采用翻边、铆接和焊接，风管与角钢法兰连接时，风管壁厚小于1.5mm，一般采用翻边

4、铆接，翻在法兰的外侧，用角尺靠在风管的纵向折角边上，使风管中心线与法兰平面保持垂直，翻边的尺寸应为6-9mm。法兰用料规格较小的可取上限值，规格较大的取下限值，防止翻边卡住螺孔，影响组装，咬口重叠处，翻边时应将突出部分铲平，同时四角不应出现豁口，以免漏风，铆钉距离不可大于120mm。Connection of rectangle air duct the flanging, rivet jointing and welding can be adopted, the connect the air duct and angle steel flange, when the thickness

5、of air duct is less than 1.5mm, generally, flanging and rivet jointing can be adopted, at first the air duct shall be turned over the outside of the flange, and the center of air duct and the surface of flange shall keep vertical measured by the set square, dimension of the folded selvedge is 6-9mm.

6、 If the dimension of flange is small take the upper limit, if it is big take the lower limit value, do not block the bolt holes to affect the installation of air duct, the overlap shall be smooth, and the four angles shall be tight, the distance between rivet shall not more than 120mm.(2)螺旋风管 Spiral

7、 air duct螺旋风管是由宽135mm、厚0.5的镀锌铁皮，采用自动化机械将之卷成螺旋状，风管轻、厚度薄、强度高。该风管可增加风管强度与韧性，气密性极佳，风速强、磨擦损失小。内管可以采用冲孔板制成，中间保温材料采用厚12.5mm的岩棉，外层再以螺旋风管被覆在保温材料上。The spiral air duct is made by galvanized iron sheet (width 135mm, thickness is 0.5mm), the air duct the advantage of light, thickness and high strength. This kind

8、 of air duct has strong toughness, fine air tihgtness, high speed and less friction loss. The inner tube is made by orifice plate and middle of the air duct adopts 12.5mm rock cotton for insulating, and then coated spiral air duct to the insulation material.送风管的安装，先由工厂样台综合放样，确定其布风器的安装位置，然后根据放样结果由工厂绘

9、制施工安装图。安装时，圆风管用砂轮切割，用其它工具切断时，切口要用砂轮磨平，不能把异物遗忘在管内。连接布风器的软管，最好外包20-30mm厚泡沫橡胶或陶瓷棉。Installation of blast pipe: at first it shall loft by manufacturer to determine the install position of ventilation terminal then the manufacturer will made the installation drawing according to the lofting results. When

10、install the air duct, the circle air duct shall be cut by grinding wheel, if it is cut by other tools the kerf shall be ground by grinding wheel, do not loose the impurity in the pipe. The soft pipe for connecting the ventilation terminal shall be coated with 20-30mm foam rubber or refractory wool.(

11、3) 焊接风管 Welded air duct机械、机舱通用采用焊接风管，其焊接风管按照图纸的要求选用材料进行预制。Generally the mechanical and engine room adopt the welded air duct which shall be prefabricated according to the relative drawing.根据各类风管的技术要求，选用相应厚度的板材，按照图纸的尺寸进行下料、刀角。According to various technical requirements of each kind of air duct to sel

12、ect the suitable plate, then lay off according to the drawing.焊接前必须清除焊接端口处的污物、油迹、锈蚀，角用点焊或缝焊时，还需清除氧物化。对口应保持最小的间隙。焊接过程中，根据板材的厚度掌握好焊丝直径和电流强度、电弧电压及焊接速度。手工点焊定位处的焊瘤应清除，焊接后，应将焊缝及其附近区域的电焊溶渣及残留的焊丝清除。Before welding the end side of the products shall be cleaned, such as dirty, oil trace, dust shall not be foun

13、d, when spot welding or seam welding is adopted for the angle the oxide shall be cleaned out. The space of butt joint shall keep less. During welding the air duct shall according the thickness of plate to select correct welding wire, current, voltage and speed. After welding the welding seam and aro

14、und shall be cleaned such as slag and remain welding wire etc.焊接接头型式如下：Welding joint as the following:四、工件表面处理： Surface treatment of workpiece钢板件磷化处理Phosphating of steel plate1、磷化前的处理： Before phosphating(1) 工件的机械加工、成型、焊接和打孔，应在磷化前完成。 Before phosphating the machine work, forming, welding and drilling

15、etc. shall be completed.(2) 各种工件其表面应无毛刺、锐边、焊渣、飞溅、金属屑、沾附特等影响处理质量的污物。The surface of each working piece the burrs, sharp edge, welding spatter, splash, grit and bur etc. shall not be found.2、磷化池可同时完成除油、除锈、磷化、钝化四道工序，其主要性能指标如下： Phosphatisation tank can finish four steps i.e. oil removal, rust removal, ph

16、osphating and passivation, the main function index as the following:外观Appearance透明液Transparent liquidPH2总酸度(点)Total acidity (point)420-480游离酸度点Free acidity point210-240比重Specific gravity1.090.02Fe含量Fe content45g/L干燥时间Drying time2h-4h3、处理液处理： Treatment of treating liquid(1) 处理方法：采用浸渍处理，将工件浸入槽液中，工件较大时

17、，可以翻动处理； Treating method: The workpiece shall be immerged to the liquid, if the workpiece is larght it can be turned;(2) 处理时间：由现场根据下列因素灵活掌握： Treating time: The treating time can be decided according to the fact at the scene. 工件表面状况 Surfaction condition of workpiece 环境温度Environment temperature 处理液新旧程

18、度 New or old class of treating oil 按用户要求，予设处理层厚度 According to users requirements to set the thickness of treatment layer 处理时间一般为2-8小时。特别要注意避免浸渍时间过长，以免磷化膜晶粒粗大和产生氢脆。 Treating timing is about 2-8 hours. Especially pay attention to emerging time of workpiece, for avoiding brings hydrogen embrittlement.(

19、3) 对板状工件，不得以重叠的方式置于处理液中，而应隔开50-100mm，以保证工件表面有充分的机会与处理液接触，从而保证处理质量。 Refer to the plate it shall not be emerged in the treating liquid overlapped, the distance between the plates shall be kept 50-100mm, so that the treating quality can be ensured.(4) 工件出槽前应注意液面层油污状况，必要时应除去油污，以免工件出槽时油污粘在工件表面。Before tak

20、e out the workpiece from the liquid pay attention the the surface of liquid, if the liquid surface is dirty it shall be cleaned for avoiding pollute the treated workpiece.(5) 工件出槽后，用自来水冲干净表面骠质及磷化液残留，置于通风处自然干燥或进行烘干，干燥后的工件应在16小时内进行防锈处理。After the workpiece is taken out from the liquid it shall be flush

21、ed by tap water, the put it on the ventilation area for natural seasoning or dried by tools, after the workpiece is dried it shall be dusted within 16 hours.五、空调风管系统施工安装 Installation and construction of air duct system of A/C5.1 准备工作 Preparatory work风管系统安装前，应进一步核实风管及送回(排)风口等部件的标高是否与设计图纸相符，并检查结构预留的孔洞

22、，预埋件的位置是否符合要求，并将预制加工的支(吊)架风管及部件运至施工现场，根据工程量大小分段进行安装。Before install the air duct system, check the elevation of each part of air duct and blast (exhaust) air port whether it is according to the drawing, and check the holes and embedded parts whether it can satisfy the requirements, then transport the

23、 prefabricated supporter (hanger) of air duct and parts to the scene.5.2 支、吊架安装的注意事项 Installation notice of supporter, hanger支、吊架安装是风管系统安装和第一工序，支、吊架的形式应据风管截面的大小及工程具体情况选择，吊架必须符合设计及国家标准图要求。Install the supporter and hanger of air duct system it the first step, the type of supporter, hanger shall be sel

24、ected according to the size of air duct and the station of project, the hanger shall according to design drawing and national standard drawing.对于保温风管，由于选用的保温材料不同，其风管的单位长度和重量不相同，支、吊架间距应符合设计要求，矩形保温风管的支、吊、托架宜设在保温层外部，不得损坏保温层，风管的安装标高，对于距形风管是从管底标起，为保持风管的水平，托架的标高应按变径的尺寸相应提高风管的安装。Refer to the insulated air

25、duct, the unit length and weight of air duct will different because various insulation material, the distance between supporter, hanger shall satisfy the design requirements. The supporter, hanger and bracket for the rectangle insulated air duct shall be on the outside of the insulation material do

26、not damage the insulation layer, about the installation elevation of the rectangle air duct is calculated from the base of the pipe, for keeping the air duct level, the elevation of bracket shall be calculated according to the relative air duct.施工现场已具备安装条件时，应将预制加工的风管、部件按照安装的顺序和不同系统运至施工现场，再将风管和部件按编号组

27、对，复核无误后即可连接和安装。When the construction scene is ready for installing, the prefabricated air duct and parts shall be transported to the scene according to the installation step and various systems; then numbered the air duct and parts, after that connect and install the air duct.风管在安装前，应对安装好的支、吊、托架进一步检

28、查位置是否正确，是否牢固可靠，根据施工方案确定吊装方法按先干管后支管的安装程序进行吊装，吊装过程中应注意下列问题：Before install the air duct, check the location of the installed supporter, hanger and bracket, whether they are fastness, according to the construction program to determine the lifting method, during lifting the following problems shall be no

29、ted:(1) 水平风管安装后的不水平度允许偏差每米应不大于3mm，总偏差不应大于20mm，垂直风管安装后有不垂直度的允许偏差每米应不大于2mm，总偏差不应大于20mm。风管沿钢板壁走时，管壁到钢板壁至少保留150mm的距离，以拧法兰螺丝。Non-levelness of flat air duct shall not more than 3mm per meter, and the total warp shall not more than 20mm, nonperpendicularity of vertical air duct shall not more than 2mm per

30、meter, the total warp shall not more than 20mm. When the air duct along with the wall of steel plate the distance between tube well and wall shall keep 150mm at least for screwing the screw of flange.(2) 法兰垫料宜采用3-5mm橡胶板，连接螺丝应加钢制垫圈。 Packing of flange shall adopt 3-5mm rubber plate, and the connecting

31、 screw shall be provided with steel washer.(3) 风管穿钢板时应有防护套管。 When the air duct through the steel plate, it shall be provided with the protection sleeve.(4) 支管的重量不得由干管承重。 The weight of branch pipe shall not beared by main pipe.(5) 管道上所用的金属附件，应按设计要求做好防腐处理。 The metal accessories on the pipeline shall b

32、e anticorrosioned according to the design requirements.5.3 空调螺旋通风管安装程序Installation procedure of spiral ducts空调螺旋通风管安装都在分段预装。船体各分段经喷砂除锈处理后进行涂装，报验合格后才可安装螺旋风管。Spiral ducts of should be installed in the block installation phase .spiral ducts can be installed when check is finished after spray sand, get rid of rust and painting螺旋风管连接形式及装配要求：Connection and assembling requirement of spiral ducts1）螺旋风管下料时要轴向切割；Material should be cut a