水泵的放置方式 1. 露天放置 一般将泵集中放置在管廊下方或侧面,也可以布置在被抽吸设备附近,主要优点是通风良好,操作和维修方便。若泵布置在管廊下方时,泵出口中心线应对齐,距管廊柱中心线0.6米。 2. 半露天布置 半露天放置的泵适用于多雨地区,一般在管廊下方布置泵,在管道上部设顶棚。或将泵布置在框架的下层地面上,以框架平台作为顶棚。根据泵的布置要求,将泵布置成单排、双排或多排。 3. 室内放置 室内放置的泵适用于寒冷或多风沙地区,以及工艺有特殊要求的场合。
设计布置水泵管道的注意事项 1、合理选择管道直径,管道直径大,在相同流量下、液流速度小,阻力损失小,但价格高,管道直径小,会导致阻力损失急剧增大,使所选泵的扬程增加,配带功率增加,成本和运行费用都增加。因此应从技术和经济的角度综合考虑。 2、排出管及其管接头应考虑所能承受的最大压力。 3、管道布置应尽可能布置成直管,尽量减小管道中的附件和尽量缩小管道长度,必须转弯的时候,弯头的弯曲半径应该是管道直径的3~5倍,角度尽可能大于90℃。 4、泵的排出侧必须装设阀门(球阀或截止阀等)和逆止阀。阀门用来调节泵的工况点,逆止阀在液体倒流时可防止泵反转,并使泵避免水锤的打击。(当液体倒流时,会产生巨大的反向压力,使泵损坏)
水泵的布置要求 1. 对于露天或半露天布置的泵,一般使泵与原动机的轴线与管廊轴线垂直。 2. 对于室内布置的泵,当其输送液体温度高于自燃点或输送液体为液态烃时,应与其它泵分别布置在各自的房间内,并用防火墙隔开。 泵布置在室内时,一般不考虑机动检修车辆的通行要求。泵端或泵侧与墙之间的净距不宜小于1.2~1.5m,两排泵之间净距不应小于2m。 蒸汽往复泵的动力侧和泵侧应留有抽出活塞和拉杆的位置。 立式泵布置在管廊下方或框架下方时,其上方应留出泵体安装和检修所需要的空间。 管道布置时,泵的两侧至少要留出一侧做维修用。
水泵的安装间距 两台泵之间的净距不宜小于700mm,泵前端操作通道不应小于1000mm,对于多级泵,泵前端的检修通道宽度不应小于1800mm。一般泵的前端检修通道宽度不应小于1250mm,以便小型叉车通过。
Placement pumps 1. Open-air place Will generally be placed in the tube pumpconcentrate or the side can also be arranged in the vicinity of pumping equipment, the main advantage is a well-ventilated, easy operation and maintenance. If the pump arranged in the tubeside, the pump outlet to deal with the centerline of Qi from the pipe centerline pillars 0.6 meters.
2. Semi-open layout Semi-open pump placement for wet areas, the general layout of the tube side廊下pump, located at the top of the roof pipe. Or to pump arranged in the framework on the lower ground to the framework as a roof platform. Pump arrangement in accordance with the requirements of the pump into a single-row layout, double row or more.
3. Interior placed Interior of the pump placed in the application of cold or wind areas, as well as the process has the special requirements of the occasion.
Designed layout of water pipes Notes 1, a reasonable selection pipe diameter, pipe diameter, and at the same flow, the flow rate of a small resistance loss, but the price is high, small diameter pipeline will cause a sharp increase resistance to damage, so that the selected pump to increase the head with with increased power, cost and increased operating costs. Technology and therefore should be considered an economic point of view.
2, exhaust pipes and pipe joints should be considered the greatest stress can bear.
3, piping layout should be arranged as straight as possible to minimize pipeline pipeline attachment and try to reduce the length of time to be turning a corner, bend bend radius of the pipe diameter should be 3 ~ 5 times greater than the point of view, as far as possible 90 ℃.
4, the discharge side of pump valve must be installed (or cut-off valve ball valve, etc.) and check valve. Valves used to regulate working conditions at the pump, check valve in the liquid pump to prevent backflow when the reverse, and pumps to avoid water hammer blow. (When the liquid back, it will have enormous negative pressure pump damage)
Pump layout requirements 1. For open or semi-open layout of the pump, general pump and prime mover so that the axis and the vertical axis of pipe gallery. 2. For the interior layout of the pump, when the transmission fluid temperature is higher than spontaneous combustion of liquid or for liquid hydrocarbon transport should be arranged separately with the other pump in their room, and separated by a firewall. Pump arranged in the interior, they generally are not considered motor vehicles require maintenance. Pump or pump-side end and the distance between the wall should not be less than 1.2 ~ 1.5m, distance between two rows of pumps should not be less than 2m. Reciprocating pump power of steam-side and side-pump should be left out of the location of the piston and rod. Vertical pump arrangementtube or at the bottom of the framework, the top of pump body should be set aside by the installation and maintenance of the space required. Piping layout, the pump on both sides to do at least one side ofmaintenance.
The installation of pumps spacing Distance between the two pumps should not be less than 700mm, the front-end operation of pump-channel should not be less than 1000mm, the multi-stage pump, pump the front end of the maintenance channel width should not be less than 1800mm. General pump overhaul channel front-end should not be less than the width of 1250mm, so the adoption of a small forklift.
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