High temperature and high pressure centrifugal pump pump method and the matters needing attention

Medium of high temperature and high pressure centrifugal pump is higher than 200 ℃, to warm the pump before driving, or entering the pump within the medium will cause pump temperature higher moments, rapid expansion of rotor, relative lag and stationary part is heated, the gap between the cause of dynamic and static parts is reduced, touch each other, friction or occlusion phenomenon may occur. Severe situations of rotor dynamic balancing precision, rotor stuck accident may occur, is often said that the holding shaft. High temperature and high pressure pump, when conveying easy to solidification of the medium, also want to warm the pump, or import and export pipeline is easy to be solidified medium jam, cavitation, vibration fault.

 

 

       1. High temperature and high pressure centrifugal pump warm pump method

1) Warm try starting or repair after the starting of pump units, high temperature and high pressure centrifugal pump should adopt the way of is warm, the pump suction valve slightly open, medium from the pump inlet flows through the pump body and guide tube from the pump discharge pipeline valve to the designated collection device. , can also be called intermittent warming pump.

       （ 2) Note warm heat pump drive pump considerations are as follows: 1)

15 and warm temperature rise of the water pump speed 30 ℃ /h。

       2） At medium and the temperature of pump body temperature difference at 20 ℃ or less and warm pump before the end.

       3） Are after the warm, close to warm the pump guide deluge valve, other driving conditions before starting.

 

       2. Warm standby high temperature and high pressure centrifugal pump pump method

1) OH2 structure of warm standby pump pump operated pump by the discharge line, a small amount of material is through the spare pump in the pump body, and then back to the pump inlet, the standby pump is in hot standby state, prevent the standby pump and suction and discharge piping within the medium solidification, ensure the pump warm, easy to start, this would require the use of warm. Bring warm after cut-off valve from the pump discharge pipeline pump line to exit before the check valve, warm pump online set gate valves and orifice, so a small amount of material leads to warm the main pump by the pump line, slowly through the spare pump pump body, back to the water pump inlet, achieve the goal of continuous warm pumps.

       （ 2) BB2 warm standby pump BB2 structure of pump structure, the warm standby method of high temperature and high pressure centrifugal pump from the pump discharge after cut-off valve guide line to the pump drainage pipeline parallel warm pump GuanXianChu, slow medium flow back to the entrance of the pump, pump pipe line set gate valves and orifice.

       （ 3) Note warm standby pump pump considerations are as follows: 1)

Warm the pump flow should not be too large, the best is 3% ~ 5% of the rated flow, in order to make sure the standby pump will not reverse.

       2） Warm standby pump must be closed after starting pump valve.

       3） speed of temperature 20 ℃ / h or less.

       4） body temperature 35 ℃ or less.

       5） When the upper pump body temperature and medium temperature 25 ℃ or less, the standby pump can drive a car.

       6） The entire process of warm pump spare pump for turning a half an hour, the rotor rotate 180 ° parking, if have difficulty turning, should stop turning, after a certain time temperature continues to rise.

       7） According to the size of the pump outlet pressure, and calculated according to choose the suitable orifice dielectric properties, such as single stage orifice plate can't meet the requirements should choose multistage orifice, prevent cavitation cavitation phenomenon.

       8） When operating switch to the standby pump, appeal the same steps to adjust, adjust until have on again.

 

       3. Other

if the temperature below the freezing point of material, also need to set up warm pump bypass, in order to avoid material in solidification in the pump body, furthermore, alternate between import and export of high temperature and high pressure centrifugal pump should be set against the condenser bypass, from the pump discharge after cut-off valve to the pump entrance before the cut-off valve, when the maintenance spare pump, close the standby pump entrance cut-off valve, open the condensate line valve, slow-moving, a small amount of liquid in the pump suction pipe section to ensure that the pipe fluid is not set.

J&T INDUSTRY CO.,LTD. offers a ton of features and capabilities to help you acquire and retain customers, boost sales and manage contacts.
Are you looking for more information regarding submersible pump pool cover drain pump? Visit J&T INDUSTRY and contact us as soon as possible!
To do that, J&T INDUSTRY CO.,LTD. will need to make sure our business is listed accurately on as many directories as possible, including technology and quality.
A quality monitoring group created for ensuring that J&T INDUSTRY CO.,LTD. manufactures submersible pump accoording the strictest standard.