精品国产国偷自产在观看|精品无人妻一区二区三区|精精国产麻豆XXXX在线播放|精品无码人妻一区二区免费AV
<cite id="5trpd"><span id="5trpd"></span></cite>
<cite id="5trpd"><span id="5trpd"><var id="5trpd"></var></span></cite>
<ins id="5trpd"></ins>
<ins id="5trpd"></ins>
<var id="5trpd"><ruby id="5trpd"></ruby></var>
<ins id="5trpd"></ins><cite id="5trpd"></cite>
<ins id="5trpd"><span id="5trpd"><var id="5trpd"></var></span></ins>
<cite id="5trpd"><span id="5trpd"><var id="5trpd"></var></span></cite><cite id="5trpd"><video id="5trpd"><menuitem id="5trpd"></menuitem></video></cite>
News Dynamic
 
company culture
Certifications
see more>>
 
Factory view
Company Profile
see more>>
 
After sales service
Contact us
see more>>
current locationHome >> News Dynamic >> Industry NewsIndustry News
Use and installation method of horizontal pipeline centrifugal pump
release2016-12-09 13:56:43  Views

       The horizontal pipeline centrifugal pump adopts the design of horizontal inlet and vertical outlet. At the same time, the diameter of the inlet is the same size, which is convenient for installation on the pipeline. When using a horizontal pipeline centrifugal pump, the ambient temperature does not exceed 40 C, the altitude does not exceed 1,000 meters, and the relative humidity does not exceed 95%.

       Horizontal pipeline centrifugal pumps are mostly used to transport clear water and other liquids with similar physical and chemical properties to clear water. In industrial and urban water supply and drainage, high-rise building pressurized water supply, marine, garden sprinkler irrigation, fire pressure booster, long-distance transportation, HVAC cycle, bathroom and other cooling and heating cycles and equipment supporting.

       Installation of horizontal pipeline centrifugal pump:

       When installing, choose a place close to the delivery liquid, so that the pump is installed in a place with a small suction height and a short suction line

       Note: Make sure that the distance between the unit and surrounding obstacles is greater than 150L, so that the motor fan has sufficient air source.

       When the pump is used in a place with strict vibration requirements, a shock absorber (pad) can be used, and it must be installed according to the manufacturer's instructions.

       The installation of the pipeline should be reliably fixed, and the pipeline support immediately adjacent to the pump flange should be sufficiently rigid, and the pump should not be allowed to bear the weight and pressure of the pipeline.

       The installation of the pump set should avoid direct sunlight and rain.

       A vacuum pressure gauge should be installed at the pump inlet and a pressure gauge should be installed at the outlet flange to observe and control the operation of the pump. The range of the pressure gauge should be 2 to 3 times the actual pressure.

       The inlet and outlet pipes of the pump should be equipped with gate valves to facilitate maintenance and operation adjustment.

       Wiring: The wires must be connected correctly according to the nameplate requirements. When wiring, the terminals must be firm, and no looseness is allowed. Otherwise, it may cause poor contact and lead to phase loss. In order to ensure the reliable operation of the motor, an overload protection device should be installed at the electrical switch, and the set value of the protection device should be adjusted according to the current requirements on the motor nameplate.

       Warning: If the overload protection device is not installed, the motor will burn out due to overload caused by the full opening of the water outlet valve, high flow operation, or in some cases the sudden increase of current.

       In the suction state (water level is lower than the axis of the impeller or the water level is lower than the axis of the suction port of the pump), at the standard atmospheric pressure, the installation height of the pump

       H An = 10- (NPSH) r-0.5-hw, hw is the resistance loss of the suction pipe (the calculation unit in the formula: m).

       When pumping water from the pool, the length of the straight pipe section in front of the suction port of the pump should not be less than 3 times the diameter of the inlet, and the depth of the suction pipe submerged below the water surface should be greater than 1.5 times the diameter of the inlet and not less than 500L. The wall distance should be greater than 1.5 times the diameter, the distance from the bottom of the pool should be more than 1.5 times the diameter and not less than 500L, and a filter should be installed. The total area of the filter should not be less than 2 to 3 times the area of the suction pipe.

       Note: The installation of the horizontal section of the suction pipe should be tilted slightly downward against the direction of the water flow to prevent entrainment.

       In order to facilitate the filling of water into the pump before starting, a bypass valve can be added at both ends of the check valve, and the bypass valve is opened to fill the pump with water before starting, and it is closed after filling, which is convenient for use. For pumps used for water supply in high-rise buildings or with an outlet pressure greater than 0.2 MPa, in addition to a gate valve at the discharge port, a check valve should also be installed between the pump outlet and the gate valve to avoid damage to the impeller due to sudden power failure and high-pressure water backflow.


 

online service
Pע㸽

Hotline

0550-7701266

精品国产国偷自产在观看|精品无人妻一区二区三区|精精国产麻豆XXXX在线播放|精品无码人妻一区二区免费AV
<cite id="5trpd"><span id="5trpd"></span></cite>
<cite id="5trpd"><span id="5trpd"><var id="5trpd"></var></span></cite>
<ins id="5trpd"></ins>
<ins id="5trpd"></ins>
<var id="5trpd"><ruby id="5trpd"></ruby></var>
<ins id="5trpd"></ins><cite id="5trpd"></cite>
<ins id="5trpd"><span id="5trpd"><var id="5trpd"></var></span></ins>
<cite id="5trpd"><span id="5trpd"><var id="5trpd"></var></span></cite><cite id="5trpd"><video id="5trpd"><menuitem id="5trpd"></menuitem></video></cite>
欧美黄色网址|永久免费AV无码18禁网站|永久免费AV无码国产网站18禁|永久免费AⅤ无码网站在线观看| 最好看的中文字幕在线视频|中文字幕亚洲|国产中文字幕2019自在自|国产大片资源中文字幕| 麻豆人妻无码性色Av专区|麻豆人妻精品一区二区三区99|麻豆国产国语精品三级在线观看|麻豆国产尤物AV尤物在线观看| 国产精品久久久久久无码|国产精品久久久久久无码不卡|国产精品久久久久久无码专区|国产精品久久久久久久AV下载| 少妇人妻精品无码一区二区三区|少妇偷人一级毛片免费看|少妇又粗又大人妻无码|少妇夜夜爽夜夜春夜夜躁| 国产农村Av国语对白免费看片|国产农村一级特黄真人片|国产农村妇女毛片精品久久|国产农村妇女毛片精品久久久| 亚洲欧美在线,亚洲无码毛片,亚洲一级片,亚洲啪AⅤ永久无码精品放毛片,亚洲无码中文,亚洲一级黄片| 人妻丰满熟妇av无码区免费蜜臀|人妻久久久久无码中文字幕|人妻人人做人碰人人爽91|人妻仑乱A级毛片免费| 国产无码视频|国产无遮挡18禁无码网站色欲|国产最爽的乱婬视频|国产最爽的乱婬视频国语对白| 国产农村一级特黄真人片,国产农村妇女毛片精品久久,国产农村妇女高潮大叫高清视频,国产农村Av国语对白免费看片| 丰满少妇A级毛片快速播放|丰满少妇一级毛片亚洲日韩|丰满少妇一级毛片免费播|丰满少妇一级特黄大片| 中文无码人妻有码人妻中文字幕|中文无码在线观看|中文无码毛片又爽又刺激|丰满人妻一级特黄aa大片| 黄色视频免费网站|黄色视频在线免费看|黄色视频在线观看免费|黄色视频在线观看网站| 免费av网站|永久免费AV无码国产网站18禁|永久免费AV无码18禁网站|国产免费AV片在线无码免费看| 久久亚洲A∨无码精品色午夜麻豆|久久亚洲A无码精品色午夜麻豆|久久亚洲精品无码AV大片|久久亚洲精品无码AⅤ电影| 午夜高清国产拍精品福利毛片|台湾中文娱乐|台湾中文娱乐网|台湾佬中文娱乐网|0my97 无码人妻精品一区免费|无码人妻精品中文字幕无码人妻|无码任你躁久久久久久在公共场所|无码又爽又高潮视频免费看|0yo275 久久九九精品久久久久久|久久九九高潮毛片免费全部播放|久久亚洲AⅤ无码精品午夜麻豆|久久亚洲AⅤ无码精品色午夜麻|ee1409 免费在线观看黄片|免费在线观看黄色网站|免费播放婬乱婬视频国产|免费播放婬乱男女婬视频国产|sew158 日日摸夜夜添无码无码AV|日日日日做夜夜夜爽无码|人妻夜夜爽88888视频|人妻夜夜爽天天爽三区丁香花|y1g905 黄色网站在线免费观看|黄色网站在线播放|黄色网站视频在线观看|黄色视频免费在线观看|eku817 一本无码aⅴ久久久国产|一级A婬片试看1O分钟|一级A爱做片免费观看国产|一级a一级a爱片免费免免高潮|1ga500 人妻少妇av无码中文字幕|人妻少妇看A偷人无码电影|人妻少妇被猛烈进入中文字幕|人妻少妇看A偷人无码精品视|is1182 91无码人妻精品,91无码人妻精品一区,91无码精品久久久一区,91人妻无码精品一区二区毛片|uoq174 一级性爱视频|一级全黄少妇性色生活片|一级A婬片试看1O分钟|一级做a爰片久久毛片无码电影|o9i836 97色色色|97色色视频|97色视频在线观看|91精品视频在线|msc748 亚洲无码一区_亚洲无码在线观看_亚洲无码高清视频_亚洲无码精品在线|9ou972 国产真人一级a爱做片高潮|国产真人一级α爱做片高潮视频|国产真人无码作爱视频免费|国产真人无遮挡作爱免费视频|gc0826 99久久久无码国产精品68|99久久久无码国产精品9|99久久久无码国产精品不卡|99久久久无码国产精品免费|ki0553 国产精品一区二区久久毛片|国产精品一区二区午夜嘿嘿嘿|国产精品一区二区在线|国产精品一区二区在线观看|cyy31 97色色视频|97色视频在线观看|99re视频|99久久久久无码国产精品|y0s193