PVC管材有很好的力学性能,且具备良好的耐腐蚀性,重量轻,安装方便,无需维护,用于家装排水系统,是好的选择。也可使用PVC固定或半固定灌溉系统,可节水50%左右,而且能提高产量,大大节约灌喷设施的造价。
PVC pipe has good mechanical properties, excellent corrosion resistance, light weight, easy installation and no maintenance. It is the only choice for domestic drainage devices. PVC fixed or semi fixed irrigation device can also be used, which can s***e water by about 50%, and increase the output and greatly s***e the cost of irrigation and spraying facilities.
UK GAFLOON PIPE GROUP LTD是一家英国专注家装给排水管道集团公司, 2021年,英国GAFLOON(卡弗龙)成为浙江省装饰行业九鼎装饰有限公司管类品牌的合作商。强强联合,助力GAFLOON品牌中国区发展。
UK Gafloon Pipe Group Ltd is a group company focusing on home decoration water supply and drainage pipes in the UK. In 2021, Gafloon has become the designated partner of Jiuding Decoration Co., Ltd., a leading enterprise in Zhejiang decoration industry. The combination of strong and strong will help the development of Gafloon brand in China.
水管虽然是家装中一种占比比较小的材料,但是由于其直接关系到我们的饮水健康,所以在选择水管品牌时,可谓是重中之重!
Gafloon卡弗龙管道,于欧美地区销售长达20多年,销售多地,在家装水管市场多有褒誉。
Although the water pipe is a relatively ***all proportion of home decoration materials, but because it is directly related to our drinking water health, so in the choice of water pipe brand, it is the most important!
Gafloon c***ron pipe has been sold well in Europe and America for more than 20 years. It has been sold in many places and has a good reputation in the domestic water pipe market.
3 .水击的影响:
水击是指压力瞬变过程,是管路中不稳定流动所引起的一种特殊的重要现象。当由于某种原因引起管路中流速突然变化时,例如开关阀门过快,突然断电停泵,都会引起管内压力突然变化,造成水击。水击又称水锤。通常,在给水管道系统中,由于下列原因造成水锤:
(1)水泵的关闭
(2)给水管道系统压力过高,阀门、突然关闭。发生水击现象的物理原因,主要是由于液体具有惯性和压缩性。阀门关闭产生增压波,增压波传到管路上游反射回来的减压波又传到阀门处为止,所需时间为2L/a。L=管长度;a=压力波速。
当阀门关闭时间Tc<2L/a,早由阀门处产生的向管道上游传播,而又反射回来的减压波,在阀门全部关闭时还未到达阀门处,则在阀门处可能产生大的水击压力,称为直接水击。
当阀门关闭时间Tc>2L/a,由管道上游反射回来的减压波会部分抵消水击增压,使阀门处的水击压力不致于达到直接水击增压值,称为间接水击。
当水击压力足够大时,会使PVC-U管材发生脆性***,即使管材不发生***,当水击反生时,特别是频率较高时,在管内产生一个较大的内压力同时,对管子也施加了疲劳载荷。
4.抛摔的影响
在贮存、运输、安装PVC-U管材时,对管材的抛摔会使管材发生细小的裂缝或缺陷,根据脆性***的裂缝理论,在此处易发生应力集中而导致管材的脆性***。
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