A new type of prefabricated directly buried insulating pipe elbow, by double slit hot melt reinforced plastics protect elbow, polyurethane foam insulation layer, a support block, steel elbow, which is characterized in that the double slit hot melt reinforced plastics protect elbow, using a plastic arc plate two pre pressing molding and two electric melting and hot plate a closed two electric melting pressure plate riding two pieces of plastic plate and arc Interalloyed formed two weld shape, when two pieces of plastic arc plate is the same, the two are located in weld elbow outer arc surface and the inner arc surface, when the shape of two pieces of plastic board is not at the same time, the two is located in the elbow weld symmetry surface: the electric heating plate is arc plate material and plastic materials are the same, the width is more than 40mm, the thickness is more than 0.5 times the thickness of the arc plate, plastic board inlaid electric wire A. The invention has the advantages of beautiful appearance, uniform thickness of the insulating layer, little welding seam and high production efficiency, and the plastic arc plate and the electrothermal melting plate are produced in batches by a professional manufacturer, and the size is stable and the quality is reliable.
【技术实现步骤摘要】
一种新型预制直埋保温弯头一、
:本专利技术属预制直埋保温管道
,是一种与《高密度聚乙烯外护管聚氨酯泡沫塑料预制直埋保温管》相配套的保温弯头。二、
技术介绍
:根据GB/T29047-2012《高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件》标准生产的《保温弯头》,其所用的聚乙烯塑料外护弯头是用聚乙烯塑料管焊接成虾米腰型弯头,用焊接虾米腰型弯头制成的《保温弯头》,存在焊接加工量大、生产效率低、保温层厚度偏差大的缺点。ZL200920268946公开了《一种对接焊缝加强型聚乙烯塑料管焊接弯头》,该专利技术很好的解决了虾米腰弯头焊缝容易出现开裂的缺陷,但在实践中发现,该技术存在制造成本高,焊接工作量大,聚乙烯塑料加强层与弯头母材贴合不严的问题,而且该专利技术用于聚氨酯泡沫保温弯头不能解决泡沫层偏差大的问题。ZL201020002477公开了《一种聚乙烯外护管聚氨酯泡沫保温弯管》,该专利技术很好的解决了泡沫层偏差大的问题,但对于弯曲半径小于3D的弯头很难实现外护管没有焊缝,而且钢弯头无法直接穿入塑料外护管内。三、
技术实现思路
:针对焊接虾米腰塑料弯头的不足,同时,还针对《保温弯头》所用的钢弯头直径及弯头弯曲半径变化范围大、钢弯头可带有直管段等特点,本专利技术提供一种新型预制直埋保温弯头,所述保温弯头所用的塑料外护弯头为双缝热熔加强塑料外护弯头,根据弯头的弯曲半径不同,其两条加强焊缝可以分别位于弯头的外弧表面和内弧表面或对称位于弯头的中分面;对于钢弯头带有直管段且直管段长度大于30cm的保温弯头,可采取先在钢弯头上捆绑支撑块,再将二块塑料弧形板包裹钢弯 ...
【技术保护点】
一种新型预制直埋保温弯头,由双缝热熔加强塑料外护弯头、聚氨酯泡沫保温层、支撑块、钢弯头构成,其特征在于:所述预制直埋保温弯头,其双缝热熔加强塑料外护弯头是由两块预先热压成型的塑料弧形板和两条电热熔板熔焊而成,两条电热熔板分别骑压着两块塑料弧形板的合拢处并相互熔合形成两条加强焊缝,当两块塑料弧形板形状相同并且对称布置时,其两条热熔加强焊缝分别位于弯头的外弧表面和内弧表面;当两块塑料弧形板形状不同时,其两条热熔加强焊缝对称位于弯头的中分面,钢弯头在双缝热熔加强塑料外护弯头腔内,两端裸露10~25cm,钢弯头与塑料外护弯头形成的环形夹层内设有支撑块和聚氨酯泡沫保温层。
【技术特征摘要】
1.一种新型预制直埋保温弯头,由双缝热熔加强塑料外护弯头、聚氨酯泡沫保温层、支撑块、钢弯头构成,其特征在于:所述预制直埋保温弯头,其双缝热熔加强塑料外护弯头是由两块预先热压成型的塑料弧形板和两条电热熔板熔焊而成,两条电热熔板分别骑压着两块塑料弧形板的合拢处并相互熔合形成两条加强焊缝,当两块塑料弧形板形状相同并且对称布置时,其两条热熔加强焊缝分别位于弯头的外弧表面和内弧表面;当两块塑...
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。