制冷管道保溫技術(shù)交底-北京建工集團(tuán).doc

  1  范圍
    本工藝標(biāo)準(zhǔn)適用于空調(diào)系統(tǒng)中制冷管道的保溫工程。
    2  施工準(zhǔn)備
    2.1  材料及主要機(jī)具：
    2.1.1  保溫材料應(yīng)符合設(shè)計(jì)規(guī)定并具有制造廠合格證明或檢驗(yàn)報(bào)告。
    2.1.2  保溫材料有聚氨脂硬質(zhì)（軟質(zhì)）泡沫塑料管殼、聚苯乙烯硬質(zhì)（軟質(zhì)）泡沫塑料管殼、巖棉管殼等。以上材質(zhì)應(yīng)導(dǎo)熱系數(shù)小，具有一定的強(qiáng)度能承受來(lái)自內(nèi)側(cè)和外側(cè)的水濕或氣體滲透，不含有腐蝕性的物質(zhì)，不燃或不易燃燒，便于施工。
    2.1.3  保溫材料在貯存、運(yùn)輸、現(xiàn)場(chǎng)保管過(guò)程中應(yīng)不受潮濕及機(jī)械損傷。        2.1.4  手電鉆、刀鋸、布剪子、克絲鉗、改錐、膩?zhàn)拥丁⒂退⒆印⒛ㄗ印⑿⊥啊�彎鉤等。
    2.2  作業(yè)條件：
    2.2.1  難燃材料必須對(duì)其耐燃性能進(jìn)行驗(yàn)證，合格后方能使用。
    2.2.2  管道保溫層施工必須在系統(tǒng)壓力試驗(yàn)檢漏合格，防腐處理結(jié)束后進(jìn)行。
    2.2.3  場(chǎng)地應(yīng)清潔干凈，有良好的照明設(shè)施。冬、雨期施工應(yīng)有防凍防雨雪措施。
    2.2.4  管道支吊架處的不襯墊缺損或漏裝的應(yīng)補(bǔ)齊。儀表接管部件等均已安裝完畢。
    2.2.5  應(yīng)有施工員的書(shū)面技術(shù)、質(zhì)量、安全交底。保溫前應(yīng)進(jìn)行隱檢。
    3  操作工藝
    3.1  工藝流程：
 隱檢→一般按絕熱層→防潮層→保護(hù)層 的順序施工→檢驗(yàn)。
1 Scope
    This technology is applicable to air conditioning systems refrigeration pipe insulation works.
    2 construction preparation
    2.1 Materials and main equipment:
    2.1.1 Insulation materials shall meet the design requirements and have the factory certification or inspection reports.
    2.1.2 Rigid polyurethane insulation materials are (soft) foam shell, polystyrene rigid (soft) foam shell, such as rock wool pipe shell. Material should be smaller than the thermal conductivity, has a certain strength to withstand water wet from the inside and the outside or gas permeability, does not contain corrosive substances, flammable or nonflammable and easy construction.
    2.1.3 heat insulating material in storage, transportation, site storage process should be free from moisture and mechanical damage. 2.1.4 hand drill, saw and knife, cloth scissors, Cutting pliers, screwdrivers, putty knives, oil brush, trowel, small buckets, hooks and so on.
    2.2 Operating conditions:
    2.2.1 of its flame retardant properties of materials must be validated, certified before use.
    2.2.2 Construction of pipe insulation must be qualified in the leak detection system, pressure test, after the end of preservative treatment.
    2.2.3 The site should be clean, have good lighting. Winter, freezing rain on the construction should be measures to prevent rain and snow.
    2.2.4 Pipe Supports Office cushion defect or leak is not installed should be padded. To take over parts of such instruments have been installed.
    2.2.5 Construction workers should have a written technology, quality, safety cards on the table. Insulation should be hidden before the inspection.
    3 Operation Process
    3.1 Process:
 Implicit review → General → damp insulation layer by layer of protection order → Construction → test.
 

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