聚氨酯直埋式保温管常识的基本介绍
Basic Introduction of General Knowledge of Polyurethane Direct Buried Thermal Insulation Pipe
聚氨酯直埋式保温管知识的根本引见,依照产品构造属性和资料属性大致可以分爲4品种型,沈阳鑫发保温管厂归结整理如下.
The basic introduction of the knowledge of polyurethane direct-buried insulating pipe can be roughly divided into four types according to the structure and information attributes of the product. Shenyang Xinfa insulating pipe factory is summarized as follows.
1 按保温层结构划分 低温预制直埋式保温管
1. Prefabrication of directly buried insulating pipes at low temperature according to the structure of insulating layer
(1)单一型：适用于150X2以下的供热介质，其中普通型适用于120C以下的供热介质，低温型适用于120~150~c的供热介质(引荐运用温度在140~2以下)。此类保温管的保温层由单一保温资料——聚氨酯硬质泡沫塑料构成，外护保温层维护壳。
(1) Single type: suitable for heating medium below 150X2, of which the ordinary type is suitable for heating medium below 120C, and the low-temperature type is suitable for heating medium between 120 and 150 C (recommended operating temperature below 140 to 2). The thermal insulation layer of this kind of insulating pipe is composed of a single thermal insulation material, rigid polyurethane foam, and the outer thermal insulation layer maintains the shell.
(2)复合型：适用于低温供热介质。此类保温管的保温层由两种保温资料复合而成。保温层、保温层的维护壳和经过热媒的任务钢管，它们不能结实地粘接在一同。内层爲新型耐低温保温资料，如离心玻璃棉毡、复合硅酸盐、玻璃泡沫，外层用聚氨酯硬质泡沫塑料停止复合制造。
(2) Compound type: suitable for low temperature heating medium. The insulation layer of this kind of insulation pipe is composed of two kinds of insulation materials. Insulation layer, maintenance shell of insulation layer and task steel pipe through heat medium can not be bonded together firmly. The inner layer is a new type of low temperature and thermal insulation material, such as centrifugal glass wool felt, composite silicate and glass foam, and the outer layer is made of polyurethane rigid foam plastics.
2 按维护壳资料划分
2. Classification by Maintenance Shell Data
(1) 高密度聚乙烯塑料(俗称夹克)维护壳。
(1) High density polyethylene plastic (commonly known as jacket) maintenance shell.
(2) 玻璃纤维加强不饱和聚酯树脂塑料(俗称玻璃钢)维护壳。
(2) Glass fiber reinforced unsaturated polyester resin plastic (commonly known as FRP) maintenance shell.
(3) 采用其他资料的维护壳，如螺旋焊接钢管、直焊缝钢管、波纹管等。
(3) Maintenance shells with other data, such as spirally welded steel pipe, straight welded steel pipe, bellows, etc.
3 按保温管加工场所划分
3. According to the location of heat preservation pipe processing
(1)工厂预制保温管：预制保温管在工厂停止加工制造。
(1) Factory prefabricated insulating pipes: prefabricated insulating pipes stop processing and manufacturing in the factory.
(2)现场预制保温管：这种产品是爲了节省供热管道工程造价，在20世纪90年代应运而生的一种简易的直埋供热管道。钢管运送到施工现场停止发泡保温，保温后缠绕玻璃钢维护壳。
(2) Prefabricated insulating pipes on site: This product is a simple direct buried heating pipeline which came into being in the 1990s in order to save the cost of heating pipeline construction. The steel pipe is transported to the construction site to stop foaming and heat preservation, and winding the FRP maintenance shell after heat preservation.
4 按保温层和热媒钢管的构造方式划分 低温预制直埋保温管
4. Divide the low-temperature prefabricated direct-buried insulating pipe according to the structure of insulating layer and heat medium steel pipe
(1)脱开式保温管：保温层和钢管之间涂一层低熔点的涂料，如低标号沥青、重油等。它受热后熔化，管道可以在保温层内自在伸缩，绝热层和回填砂土坚持运动形态。这种脱开式次要用于低温复合保温管，如蒸汽管道。
(1) Open insulating pipe: a low melting point coating is applied between the insulating layer and the steel pipe, such as low-grade asphalt, heavy oil, etc. It melts after being heated, the pipeline can expand and contract freely in the insulation layer, and the insulation layer and backfill sand adhere to the movement pattern. This type of detachment is mainly used for low temperature composite insulation pipes, such as steam pipes.
(2)全体式保温管：钢管、保温资料、维护壳三局部结实地粘结在一同，构成一个全体构造。当钢管因保送介质而温度降低发作热收缩时，绝热层随之一同收缩挪动。全体式保温管次要用于热媒温度在150℃以下的场所。、
(2) All-purpose heat preservation pipes: steel pipes, heat preservation materials and maintenance shells are bonded together to form a whole structure. When the temperature of the steel tube decreases due to the delivery medium, the insulation layer shrinks and moves along with it. The whole heat preservation pipe is mainly used in places where the temperature of heat medium is below 150 C. ,
In summary, all the above-mentioned Shandong Hipper Pipe Technology Development Co., Ltd. provides, want to know the knowledge of polyurethane insulation pipe manufacturers, welcome to pay attention to our website: http://www.sdhpgy.com Thank you for your support!
