结构采暖制冷系统施工手册中英对照.doc

结构采暖/制冷系统施工手册目录1. REHAU 管道的材料特性1.1 REHAU PE-Xa 采暖管道1.2 管道的运输和储存2. 结构采暖系统的安装2.1 安装工艺流程2.2 安装前准备2.3 安装步骤2.3.1 钢筋网片的预制2.3.2 管道绑扎2.3.3 钢筋网片的储存和运输2.3.4 管道现场安装2.3.5 管道现场打压保压 2.4 混凝土浇注和养护2.5 系统升压泄压2.6 管道破损时的维修1. REHAU 管道的材料特性1.1 REHAU PE-Xa 采暖管道REHAU PE-Xa采暖管道是由高密度交联聚乙烯 (PE-Xa)，并与一由聚乙烯醇(EVOH)组成的阻氧层共挤而成。管道的基础材料PE-Xa是用过氧化物交联(Engel法)制成。此种方法的交联工艺是在高温和高压和过氧化物的帮助下发生交联反应，将单个的聚乙烯长链分子间进行化学链接，形成三维的网状化学结构，显著地增强了聚乙烯的物理机械性能。与交联聚乙烯管道共挤出的EVOH阻氧层，是具有最佳屏障效果的聚合物，远远高出德国DIN4726标准中对防氧气渗透性规定的要求。在交联聚乙烯管道与阻氧层之间有一具有强大结合性能的粘结剂层。EVOH阻氧层增强了管道的耐磨性和耐侵蚀性，因此可以应用与绝大多数恶劣的施工现场环境。技术数据密度 (依据DIN 53497测试) 0.93 g/cm3弹性模量 (依据DIN 53457测试) 600 N/mm2抗冲击强度 20C时 不破裂 -20C时 不破裂线性膨胀系数 1.5 x 10-4K-1导热系数 0.35w/m*k40C时氧渗透量 0.1g/m3*d管道表面粗糙度 0.007 mm最小弯曲半径 5倍管道外径1.2管道的运输和储存REHAU 管道和所有系统组件必须：- 需按照材料的特殊要求进行运输，如带包装进行运输和装卸；- 不要在地面或混凝土表面拖拉裸管；- 不要将管道存放在有尖锐棱角的表面上；- 需对管道提供防护，避免管道受到机械损坏及焊接损伤，并需避免管道沾染油，脂类，染料等化学物质；- 避免管道受到长时间的日光照射。如管道需要在室外存放，需采取防护措施。例如：用不透光的薄膜或类似物品遮盖管道，切勿存放在无遮挡物的室外！- 管道使用前才打开外包装。避免管道受到长时间的日光照射 禁止将管道存放在有尖锐棱角的表面上管道仅在被绑扎前才能打开外层黑色PE保护膜2. 结构采暖系统的安装2.1 安装工艺流程2.3.3采暖网片储存和运输2.3.2管道绑扎2.3.1钢筋网片的预制2.2安装前准备2.3.4管道现场打压保压2.5系统升压卸压2.4混凝土浇筑和养护系统压力实验采暖主管连接安装分水器2.6 系统升温调试2.2 安装前准备在安装前需仔细阅读施工图纸，依照施工图纸计算实际的盘管材料用量，按照具体尺寸，在现场进行管道剪割。依据施工图纸，针对各盘管区域进行编号并制作标签，用于标记每个绑扎好管道的钢筋网格。2.3 安装步骤2.3.1 采暖网片的预制首先进行采暖网片的预制或在市场上采购成品网片。采暖网片的预制：依照设计图纸提供的参数和形式，在加工平台上采用300mm x 300mm 的间隔，使用直径f4mm的冷拔圆钢加工采暖网片。网片需采用对接点焊的方式进行焊接。注意：采暖网片焊接区域应远离管道现场存放区域！2.3.2 管道绑扎回路铺设以双平行型方式铺设，采用电工尼龙绑扎带将管道牢固地固定在预制好的采暖网片上，严禁使用金属丝绑扎管道。直管处的固定点间距应小于500mm，在弯曲管段应适当加密。管道的弯曲半径应不小于5-6倍管道外径，在冬季施工(尤其是温度低于零下5摄氏度)期间，在弯曲管道前使用手温加热管道后再进行弯管。应对钢筋接头处进行处理，避免管道被磨损划伤。平均管间距的安装误差不应大于5mm，管道切割应采用专用工具，切口应平整，端口面垂直管轴线。同一路的加热管应保持水平，确保管顶平整度为8mm。双平行型铺设2.3.3 钢筋网片的储存和运输使用胶带将天棚管道的供、回水端口密封。盘管与集分水器的连接管道需按图纸设计的要求事先预留，并将管道盘卷后固定于钢筋网格上，避免连接管道在运输过程中被损坏。将事先编号的标签绑扎于对应的钢筋网格上，避免混淆。需要重叠堆放时，钢筋网拍间需用木板均匀隔开，重叠堆放的层数不得超过5层。钢筋网格需长期存放在室外时，需用不透光的薄膜或类似物品遮盖管道，并避免管道被划伤或挤压变形。运输钢筋网拍时需使用吊架进行垂直吊装运输，在吊装前需确认所有管道及预留的连接管道均已牢固的固定，并加强在运输过程中的管道保护。2.3.4 管道现场安装严格依照设计图纸的要求，将正确的钢筋网拍铺设于相应的位置。预留的连接管道采用电工尼龙绑扎带固定于钢筋上，管道的绑扎要求与预制钢筋网格时相同。与其他专业交叉施工时，应注意成品保护，避免管道被电焊烫伤或绑扎工踩坏管道。依照设计的要求，绑扎完采暖管道的采暖网片应使用钢质挂钩水平悬挂于上层钢筋网下面，请参见结构采暖管道安装节点图。应确保采暖网片的位置和高度符合节点图的要求。在现场绑扎管道时，不能直接将管道在钢筋表面上拖拽，避免管道表面被钢筋损伤。应将管材放在管道绞盘上。管道绞盘可由工地上常备的钢筋绞盘代替。在管道穿越大梁时，应使用剖开的PVC管作为临时保护套管或直接安装永久保护套管。棚管道应在集分水器垂直投影面积内出底(顶)板，要求平顺和整齐。穿越底(顶)板和外露的管道部分需加设黑色波纹保护套管。为防止各专业在顶板施工过程中对天棚管道的踩踏，可在钢筋网格中间架设50mm的陶粒砖或等高的其它材料加以保护，在浇注混凝土前撤走。为确保天棚管道不被电线管咯伤，建议将电线管铺设在天棚管道的上面，在铺设电线管时必须采取措施避免天棚管道被踩踏。2.3.5 管道现场打压保压采暖管道的实验压力为工作压力的1.5倍，实验压力不应大于1MPa。压力实验按以下步骤进行：a. 通过手动泵向管道中缓慢注入水或乙二醇防冻剂(冬季施工)，并通过排气阀将管道中的空气排出，务必将空气排净；b. 管道充满水或防冻剂后，进行水密性检查；宜采用手动泵缓慢升压，升压过程中应随时观察与检查，不得有渗漏；c. 升压至规定压力后，停止加压，稳压1小时，观察有无泄漏现象；d. 稳压1小时后，补压至规定实验压力值，压力降不超过0.05MPa并无渗漏为合格。在采暖网片被完全固定后，对管道依照压力实验的要求进行压力实验，在监理工程师验收合格后，将压力降至0.6MPa进行保压，其它专业人员方能进行下道工序的施工。2.4 混凝土浇注和养护在混凝土浇注过程中，需由专人对采暖管道进行保护。强烈要求土建人员在浇注混凝土时不得使用震动棒，宜采用平板振捣器。在浇注过程中，需另设专人密切关注压力表的压力变化情况，如出现压力下降异常，必须马上停止混凝土的浇注，需及时检查管道，对管道的泄漏点立即进行处理。在混凝土浇注完成和养护过程中，管道仍需进行保压。在此期间，仍需密切关注压力表的压力变化情况，如出现压力下降异常，应立即处理。2.5 系统升压泄压在混凝土终凝后，对管道升压至规定的实验压力，压力实验合格后方能泄压。使用压缩空气将天棚管道内残留的防冻液完全吹出，使用保护胶带将采暖管道的供、回水端口密封。2.7 管道破损时的维修在混凝土浇注及厂房的设备安装阶段，一旦管道被损伤造成泄漏，应立即关闭集分水器上的此回路截止阀，迅速查找泄漏点。在确定泄漏点的位置后，应由专业人员使用手动工具剔出一个长度至少为30厘米，宽度至少为15厘米的槽，深度应管道完全暴露并能满足收紧工具的操作。应使用REHAU的专用连接工具和管件，下图所示的连接方法，对破损的管道立即进行维修。维修完成后，必须使用保护胶带缠裹管件的外表面。并立即对维修完成的管道进行压力实验，在压力实验合格后，方能进行二次浇筑。瑞好收紧套环式连接步骤1将套环套入管道 2. 扩张管道3插入管件 4. 收紧-完成Structure Heating / Cooling System Construction Manuals1.Catalog1. REHAU pipe material properties 1.1 REHAU PE-Xa heating pipe 1.2 Pipeline transport and storage2. Structure Heating / Cooling System 2.1 installation process 2.2 Pre-installation Preparation 2.3 Installation Steps 2.3.1 prefabricated steel mesh 2.3.2 Pipeline banding 2.3.3 Reinforced Mesh storage and transport 2.3.4 Pipe-site installation 2.3.5 pipe pressure at the scene 2.4 Concrete Pouring and conservation 2.5 Boost and Relief System Pressure 2.6Repairing of damaged pipeline 1. REHAU pipe material properties 1.1 REHAU PE-Xa heating pipeREHAU PE-Xa pipe heating by high-density crosslinked polyethylene (PE-Xa), and one from polyvinyl alcohol (EVOH) oxygen barrier layer composition by coextrusion. Basic pipeline Materials PE-Xa are crosslinked with peroxides (Engel method) are made. This method of cross-linking process are at high temperature and high pressure and the help of peroxide crosslinking reaction occurred, a single long chain polyethylene chemical link between molecules to form a mesh of three-dimensional chemical structure, significantly enhanced the poly physical and mechanical properties of ethylene. With cross-linked polyethylene pipe co-extrusion resistance of the EVOH oxygen layer, are the best barrier effect of the polymer, which is far higher than the German standard DIN4726 of anti-oxygen permeability requirements. Cross-linked polyethylene pipe in with the resistance there is one between the oxygen layer with a strong combination of performance binder layer. EVOH layer enhanced the resistance of oxygen pipeline wear resistance and corrosion resistance, it can be applied with the vast majority of poor construction site environment.Technical DataDensity (based on DIN 53497 testing) 0.93 g/cm3Elastic modulus (based on DIN 53457 testing) 600 N/mm2Impact strength20C Not rupture-20C Not ruptureLinear expansion coefficient 1.5 x 10-4K-1Thermal conductivity 0.35w/m*k40 C when the volume of oxygen permeability 0.1g/m3*dPipe Surface Roughness 0.007 mmMinimum bend radius 5 times the pipe outside diameter1.2 Pipeline transport and storageREHAU piping and all system components: - Materials to be in accordance with the special requirements for transportation, packaging such as with transport and handling; - Do not drag t the bare tube on he ground or concrete surface - Not to be stored in the pipeline on sharp edges and corners of the surface; - Need to provide protection of pipelines to avoid damage to pipes and welding by mechanical injury, and the need to avoid contamination of oil pipelines, lipids, dyes and other chemical substances; - Avoid long pipeline by sunlight. Pipeline such as the need for outdoor storage, protective measures to be taken. For example: The Opacity of the film, or similar items to cover pipes, not stored in non-block objects outdoors! - Not to open the package before use.Avoid pipeline by sunlight Prohibit the storage of pipe at the surface of sharp edges and cornersPipeline only in the pre-banding to open the outer black PE protective film2. Installation2.1 安装工艺流程2.3.3 Heating mesh storage and transport2.3.1 Prefabricated steel mesh2.3.2 Pipeline banding2.2 Pre-installation Preparation2.3.4 Pipeline at the scene to suppress the pressure2.4 Concrete pouring and conservation2.5 Boost pressure relief systemPressure testPipe connectionManifold installation2.6 System test2.2 Pre-installation PreparationAt pre-installation required to read construction drawings, construction drawings in accordance with the actual amount of coil material, in accordance with the specific size, in the field cut pipe shears. Based on the construction drawings, for each coil region and the production of tag numbers for each marker banding reinforced good pipeline grid.2.3 Installation step2.3.1 Prefabricated heating meshFirst heating mesh prefabricated or use finished mesh from market. Prefabricated heating mesh: in accordance with the design drawings provided by the parameters , the form used in the processing platform 300mm x 300mm intervals, use the cold-drawing f 4mm diameter round steel mesh processing heating. Mesh to be used for spot welding.Note: mesh welding heating region at the scene should be kept away from the pipeline region!2.3.2 Pipeline bandingLoop laying to the laying of double-parallel-type approach, using nylon banding will be firmly secured to the pipeline prefabricated mesh well , and strictly prohibit the use of metal wire banding pipeline. Department straight fixed-point spacing should be less than 500mm, at bending pipe sections should be properly encrypted. Pipe bend radius should be not less than 5-6 times the pipe diameter, in the winter construction (especially at temperatures below minus 5 degrees Celsius) during the pre-bent pipe using hand temperature after heating pipe elbows. Reinforced joint, to avoid wear and tear pipeline. The average distance between tube installation error should not be greater than 5mm, pipe cutting special tools should be used, should be formed incision, port noodle vertical tube axis. The same road the level of heating pipes should be maintained to ensure that the tube top for flatness 8mm.double-parallel-type2.3.3 Steel mesh storage and transportUse tape to the ceiling for the pipeline, backwater port sealed. Coil and set water pipe connections according to the requirements of design drawings prior reservation, and after the pipeline Coil fixed up in the steel mesh, to avoid connecting pipelines were damaged during transport. Using pre-numbered tag banding in the corresponding grid on the steel, to avoid confusion. Overlapping layers stacked no more than 5 layers. Steel mesh to be stored in outdoor long-term, the required opacity of the film, or similar items to cover pipelines and to avoid being scratched or extruded pipe deformation. Net Transport reinforced hanger to use when using vertical hoisting transport, before lifting at all to confirm the connection pipes and pipelines have been set aside firmly fixed, and to strengthen during transportation.2.3.4 Pipe-site installation Strictly in accordance with the requirements of design drawings will be correct laying reinforced Nets at the corresponding position. Set aside to connect the pipeline with the use of electrical nylon banding fixed on steel, the pipeline of pre-cast reinforced banding requirements with the same grid. With other professional crossover construction, care should be taken to protect finished products to avoid the pipe by welding or banding scalded squelch pipeline workers. Designed in accordance with the requirements of banding End heating pipe heating steel mesh should be used to link the level of suspension in the upper reinforced Net below, please refer to the structure of heating pipes installed detail drawing. Should ensure that the heating mesh position and height in line with the detail drawing。Bending at the scene when the pipeline can not be piped directly to the drag on the steel surface, the surface to be reinforced to prevent pipeline damage. Pipe should be placed on pipe winch. Winch pipeline may be standing on the site to replace the steel winch. Through the beam in the pipeline should be used when cut open the PVC pipe as a temporary protection or direct the installation of permanent casing to protect the casing.Pipe should be set at the vertical projection area of the end (top) panels, require smooth and tidy. Through the end (top) panels and exposed pipes which need additional protection of black corrugated casing.In order to prevent the professional roof at the construction process of the stampede on the ceiling pipes, can be set up between steel mesh 50mm ceramsite brick or contour of the other materials to be protected, in the pouring of concrete before the withdrawal. To ensure that the ceiling will not be wire tube pipe pyronaridine injury, it is suggested that the laying of wires and pipes at the ceiling above the pipeline, at the laying of wires and tubes for measures to be taken to avoid being trampled ceiling pipes.2.3.5 pipe pressure at the scene to suppress Experimental heating pipe pressure test for 1.5 times the experiment should not be greater than the pressure 1MPa. Pressure test according to the following steps: a. through manual pump to the pipeline in the slow injection of water or ethylene glycol antifreeze (winter construction), and through the valve to the air exhaust pipe, be sure to air emission net; b. pipe filled with water or antifreeze, the water to check; Wish to manually pump the slow step, step-up in the process of observation and inspection at any time without any leakage; c. boost to the provisions of stress after the cessation of pressure, voltage regulator 1 hour to observe whether the leak situation; d. Regulators 1 hour later, the fill pressure to the provisions of the experimental pressure value, the pressure drop does not exceed 0.05MPa for qualified no leakage. At heating mesh was completely fixed, the pressure on the pipeline in accordance with the requirements of the experimental pressure experiments, qualified acceptance at Supervision Engineer will carry out pressure 0.6MPa pressure dropped, and other professionals in order to carry out procedures under construction.2.3.2.4 Concrete Pouring and conservation At the process of concrete pouring, there is a need for heating pipes by hand protection. Strongly demanded in the pouring of concrete construction are not permitted to use vibration rods, should adopt the flat-panel device vibrated. In the pouring process, the additional pressure gauge located close attention to special Change of pressure, such as pressure drop appears abnormal, we must put an immediate stop to the pouring of concrete, the need for timely inspection pipeline leak on the pipeline deal with immediately. At the completion and maintenance of concrete pouring process, the pipeline pressure to be done. In the meantime, still need to pay close attention to the pressure manometer Change, such as stress drop appears abnormal should be address