管道支吊架型式的选择应满足本身的强度刚度工作温度要求

管道支吊架型式的选择应满足本身的强度刚度工作温度要求
2021年01月04日08:35:28 0 325

管道支吊架的选择应满足强度、刚度和工作温度的要求

MPP动力管架

管道支吊架用于支撑和固定管道。管道支吊架型式的选择应主要考虑其自身的强度、刚度、工作温度、工作压力、管道的线膨胀系数、投产后的受力情况,以及生产安装成本是否低廉。

由于热力管道的运行温度与安装温度相差很大,热力管道支吊架的受力最为复杂。因此,管道设计和安装的一个重要内容是根据管道流体的类型选择合适的管支架,从而将MPP动力管道的水平或垂直位移控制在预定的范围内,而不产生过大的管道应力,从而保证管道系统的安全运行。以下内容介绍几种常见的管道支架(支吊架)

6.1管支架类型

6.1.1固定支架:固定支架应安装在管道上不允许位移的地方,固定支架应设置在坚固的建筑物(如梁、柱)或专门设置的结构上。固定支架一般设置在带膨胀机的热管两端。当主管上有支管时,可在靠近支管的主管上设置固定支架。

6.1.2导向支架:导向支架应安装在水平管道上只允许轴向位移而不允许横向位移的位置。在垂直管道上,只允许管道垂直位移,不承受管道重量。还应设置导向支架,以防止MPP动力管道的振动。一般情况下,导向支架应安装在铸造阀门的两侧,以减小弯矩。导向支架不应安装在弯头和方形补偿器附近。

6.1.3滑动支架:滑动支架可安装在水平管道上有或只有很小垂直位移且允许轴向和横向位移的地方。它可用作两个固定管支架之间的支架。水平安装的管道一般采用滑管支架,管道支架应靠近弯头和方形补偿器(结构见图纸)

6.1.4吊架:主要用于地板下的单根管道。如果管道远离地板,吊杆可以通过铰链连接,这样可以使管道产生较小的纵向和横向位移。(其结构如图所示)

6.1.5弹簧支吊架:当管道发生垂直位移时,应安装弹簧吊架,以承受其重量并适应其位移。当弹簧吊架不易安装时,也可使用弹簧支架。当有水平位移时,应使用球弹簧支座。弹簧吊架可安装在水平管或垂直管上。

6.1.6型钢吊架:并排管悬挂在梁或楼板下。

6.1.7墙框、柱框:用于墙、柱管道,包括悬臂式、三角支撑式、柱夹式(见图集)

6.1.8mpp动力管柱支架:当管道既不靠墙也不靠柱时,采用管柱支架。(结构见图集)


The selection of pipe supports and hangers should meet the requirements of strength, rigidity and working temperature

MPP power pipe rack

Supports and hangers of pipes are used to support and fix pipes. The selection of pipe support and hanger type should mainly meet its own strength, stiffness, working temperature, working pressure, linear expansion coefficient of pipe, and stress condition after putting into operation, as well as whether the production and installation cost is low.

Due to the great difference between the operation temperature and installation temperature of the thermal pipeline, the stress of the supports and hangers of the thermal pipeline is the most complex. Therefore, an important content of the pipeline design and installation is to select the appropriate pipe support according to the type of pipeline fluid, so as to control the horizontal or vertical displacement of the MPP power pipeline within the predetermined range, and not produce excessive pipeline stress, so as to ensure the safety of the pipeline Safe operation of pipeline system. The following contents introduce some common pipe supports (supports and hangers)

6.1 type of pipe support

6.1.1 fixed support: fixed support shall be installed at the place where no displacement is allowed on the pipeline, and the fixed support shall be set on the firm building (such as beam, column) or specially set structure. The fixed support is generally set at both ends of the hot pipe with expander. When there is a branch pipe on the main pipe, the fixed support can be set on the main pipe close to the branch pipe.

6.1.2 guide bracket: guide bracket shall be installed where only axial displacement but not transverse displacement is allowed on horizontal pipeline. On the vertical pipeline, only vertical displacement of the pipeline is allowed, and it does not bear the weight of the pipeline. The guide bracket should also be set, which can also prevent the vibration of MPP power pipeline. Generally, guide bracket should be installed on both sides of casting valve to reduce bending moment. The guide bracket should not be installed near the elbow and square compensator.

6.1.3 sliding support: sliding support can be installed at the place where there is or only a small vertical displacement on the horizontal pipeline and the axial and transverse displacement is allowed. It can be used as a support between two fixed pipe supports. Sliding pipe supports are generally used for horizontally installed pipes, and pipe supports should be used near elbows and square compensators (see the drawings for the structure)

6.1.4 hanger: mainly used for single pipe under the floor. If the pipe is far away from the floor, the suspender can be connected by hinges, which can allow small longitudinal and transverse displacement of the pipe. (its structure is shown in the drawings)

6.1.5 spring supports and hangers: where there is vertical displacement in the pipeline, spring hangers shall be installed to bear the weight and adapt to its displacement. When it is not easy to install the spring hanger, the spring support can also be used. When there is horizontal displacement, the ball spring support should be used. The spring hanger can be installed on the horizontal pipe or vertical pipe.

6.1.6 section steel hanger: the side-by-side pipes are hung under the beam or floor.

6.1.7 wall frame and column frame: used for wall and column pipes, including cantilever type, triangle support type and column clamping type (see Atlas)

6.1.8mpp power pipe column support: pipe column support is used when the pipe is neither against the wall nor against the column. (see the atlas for its structure)


管道支吊架型式的选择应满足本身的强度刚度工作温度要求

 

mpp电力管架

 

管道的支架、吊架是用来支承和固定管道适用的。管道支吊架型式的选择,主要应满足本身的强度,刚度,工作温度,工作压力,管材的线膨胀系数,以及投入运行后的受力状况,还要考虑制作和安装的成本是否低廉。

由于热力管道的运行温度与安装温度差异很大,所以热力管道支吊架的受力情况最为复杂,因此管道设计安装中的一项重要内容就是:根据管道流体类型选择适当的管架,以便控制mpp电力管道在预定的范围内产生水平或垂直位移,并不产生过大的管道应力,以保证管道系统的安全运行。以下内容介绍一些常用的管架(支承和吊架)

6.1管架的型式

6.1.1固定支架:在管道上不允许有任何位移的地方,应装设固定支架,固定支架应设置在牢固的建筑物上(如梁、柱)或专设立的结构物上。固定支架一般设在有膨胀器的热管道两端。当主管上有支管时,可以把固定支架设在靠近支管的主管道上。

6.1.2导向支架:在水平管道上只允许有轴向位移而不允许有横向位移的地方,应装设导向支架。在垂直管道上只允许管道有垂直方向的位移,不承受管道重量,也应设导向支架,它还能够防止mpp电力管道的振动。在铸造阀件两侧,一般应装设导向支架,使铸件少受弯矩作用。导向支架不宜装在弯头和方形补偿器附近。

6.1.3滑动支架:在水平管道上设有或只有很小垂直位移并允许在轴向和横向有位移的地方,可装设滑动支架。它可在两个固定管架之间作支承,水平安装的管道一般都采用滑动管架,弯头附近和方形补偿器附近宜采用管架(其结构见图集活动管托)

6.1.4吊架:主要用于楼板下的单根管道。若管道距离楼板较远,则吊杆可用铰链连接,可允许管道有较小的纵向和横向位移。(其结构见图集吊架)

6.1.5弹簧支吊架:在管道有垂直位移的地方,应装设弹簧吊架,以承受重量并适应其位移。当不便装设弹簧吊架时,亦可采用弹簧支架,当有水平位移时,应采用滚球弹簧支架,在水平管或垂直管上均可装设弹簧吊架。

6.1.6型钢吊架:并排的管道吊在梁或楼板下采用。

6.1.7墙架、柱架:用于墙、柱置的管道,有悬臂式、三角支撑式和夹柱式等各种型式(见图集)

6.1.8mpp电力管柱支架:当管道既不靠墙又不靠柱时采用管柱支架。(其结构见图集)

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