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High Pressure Centrifugal Filling LPG water pump
××××××× OVERVIEW ×××××××
General overview about High Pressure Centrifugal Filling LPG water pump
Model QDG LPG transfer pump is a horizontal multistage centrifugal water feed boiler pump and suitable for transporting pure water (with the contained foreign matters' content less than l % and graininess less than 0. 1mm) and other liquids of both physical and chemical natures similar with those of pure water.
QDG model middle and low pressure boiler water supply pump is applicable to transport medium with temperature of not higher than 105℃, and is also applicable for small boiler water supply or transporting medium similar to hot water.
QDG model hypo high pressure boiler water supply pump is used to transport medium with temperature of not higher than 160℃, and is also applicable for small boiler water supply or transporting medium similar to hot water.
××××××× APPLICATIONS ×××××××
Application about High Pressure Centrifugal Filling LPG water pump
Type QD(G) high pressure LPG water pump are used for feeding high pressure boiler or pumping high pressure clean water.
The temperature of pumped media is not more than 170℃.
××××××× CAPACITY ×××××××
Peformance about High Pressure Centrifugal Filling LPG water pump
Range of capacity: 120-1100m3/h
Range of total head:967- 2500m
××××××× CONSTRUCTION ×××××××
Construction about High Pressure Centrifugal Filling LPG water pump
The boiler feed water pump supported by both ends, and casing portion is sectional.
Connected with motor by flexible coupling For rotating direction, viewing from the motor end.
1. The boiler feed water pump are sectional casing,multistage centrifugal pumps. The suction casing, stage casing and discharge casings are rigidly held together by tie bolts. The joints between these casings are primarily sealed by means of metal-metal contact. Simultaneously,O-rings are used as auxiliary seals.
2. The shafts of these pumps are sealed by soft-packing and cooling water. Mechanical seal can be used according to the client's requirement.
3. The rotating assembly is supported by sliding bearings on both ends of the pump shaft. Bearings of pump are forced-lubricated. The oil system is equipped for type QD(G) pump The axial thrust of rotor is balanced by balance disc. And the thrust bearing is also provided which is sed to bear residual axial force caused by the change of working conditions.
The assembly quality of the boiler pump will result in a notable affection to the performance and the running stability of it and can not be guaranteed unless the technical requirements in the drawings are strictly followed in the assembly, such as on the alignment between the centers of the impeller’s outlet and the guide vane's inlet. the uniform values of the sealing intervals of both rotor and stator portions etc.
Covering angle and central line posit ion adjustment. check the equipments at least in the fol lowing three periods and take adjustment:
The first time, both pump and foundation are secured while the motor is not.
The second time, both pump and motor are secured while the bolts on the suck-in and spitting pipeline flanges are not.
The third time is in 24 hours after the pump starts running,then secure both pump and motor
××××××× NOTIFICATIONS ×××××××
Attentions about High Pressure Centrifugal Filling LPG water pump
The LPG transfer pump allowed to run within the set parameter range only.
The pump is not allowed to run with the spitting valve closed or closed to a little opening, or it will be caused heated and duration lowered. Each pump is required to run under the special parameters so as to guarantee the flow of it if mounted in a parallel system.
The pump can not run with the suck-in valve closed, or it may be dried moving to cause parts damaged.
The medium the pump transports can not contain air or gas, or both flow and head of the pump may not be accurately measured and, meanwhile, grinding maybe produced to damage parts.
This pump is not allowed to transport any material with grains, or both pump efficacy and part duration may be lowered.
To keep the boiler pump in a high effective and stable work, it must be often repaired, the items of repair and the interval between every repair depend on the working condition and running state of it.
××××××× DRIVER ×××××××
Driver for High Pressure Centrifugal Filling LPG water pump
The LPG transfer pump is driven by the motor through the coupling The gear, membrane coupling and hydraulic coupling can be used according to client's requirements. The pump can be driven by turbine or motor.The rotating direction of pumps are clockwise when viewed from the driving end.
××××××× CONSTRUCTION DRAWING ×××××××
Construction of High Pressure Centrifugal Filling LPG water pump
××××××× CURVE CHART ×××××××
Perofmance curve chart about High Pressure Centrifugal Filling LPG water pump
××××××× PERFORMANCE LIST ×××××××
Performance table list about High Pressure Centrifugal Filling LPG water pump
××××××× FAQ ×××××××
FAQ about High Pressure Centrifugal Filling LPG water pump
The completed supply of electric water supply pump group includes:
1 Water supply pump, pre-pump and its inlet filtering screen
2 Motor
3 Hydraulic coupler and oil cooler for both working and lubricating oils
4 Check valve at the outlet of the water supply pump
5 Minimum flow device : includes recycling valve, stop valve and flow measurer
6 Clutch and other accessories
7 Oil thin station
8 Of which the motor, recycling valve, hydraulic coupler, oil thinning station, check valve,pre-pump, stop valve and flow measurer can also be purchased by clients and this Co.will be in charge of technical coordination.
Please provide the following parameters when to order the product of this Co.:
1. Flows at the outlet of the water supply pump and the tap (boosting class)
2. Pressures(or the pump group's head) at the outlet of the water supply pump and the inlet of the pre-pump
3. Water supply temperature
4. Pump group's type(steam-powered or electric pump)
5. The installation dimensions are to be provide at or
××××××× CONTACT US ×××××××
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