Multi-stage centrifugal pump - horizontal.
Summary of multi-stage centrifugal pump:
Type D pump is single stage, multi-suction and segmental centrifugal clean water pump. Suitable for mines, factories and urban water supply and drainage, which is used to transport water without solid particles or liquid, physical and chemical properties similar to Yu Qingshui be transported medium temperature 0 ℃ ~ 80 ℃, allow the inlet pressure of 0.6 MPa.
The parameters range of the multi-stage centrifugal pump: flow Q 10~500m3/s yangcheng H 33~850m.
Structure type:
Multi-stage centrifugal pump for horizontal installation. The suction direction of the pump is horizontal. Pump outlet direction vertical upward. The axial force is balanced by a balance plate. Shaft seal is usually sealed with packing, and mechanical seal can be used according to user's requirement.
Summary:
Self balancing multistage centrifugal pump is horizontal, multi-stage, single suction centrifugal pump, used for conveying not containing solid particles, the temperature is below 80 ℃ water or similar physical and chemical property of Yu Qingshui liquid. Suitable for mine, factory and city water supply and drainage works. For conveying solid particles not more than 2%(particle size less than 1mm), medium solid concentration is less than 5%wt. Temperature & le; 105 ℃ water or other liquids of physical and chemical properties similar to Yu Qingshui liquid. It can also be used for conveying temperature by changing the material of the pump (or the material of the pump through the flow part), the sealing form and the added cooling system. 210 ℃ hot water, oil, corrosive or containing abrasive medium, etc.
Parameter range:
Flow: 10~850m3/s head: 70~1800m.
Working principle:
In motor driven pump shaft rotation, the liquid work, allow it to increase energy, so that the needed quantity of liquid pool by inhaling through the inlet section of the pump, the impeller, guide vane, the middle, the water level of outlet, the transition pipe, secondary inlet, the impeller, anti-missile leaf, water vertical outlet, the liquid flowing out.
Advanced nature of self-balancing multi-stage centrifugal pump
The pump USES symmetrical arrangement, can basically eliminate axial force, residual axial force from a pair of back to back Angle contact ball bearing.
Due to the unbalance device, the disk friction loss of the unbalanced disk has no balance return loss, so the pump efficiency is increased by 5-14% compared with the same type of multi-stage pump.
Due to the unbalance device, the failure of the balance device can be completely solved, which can cause the abrasion of the pump balance plate and the balance disc holder, and the rotors bite to die, etc., which greatly prolong the service life of the pump.
Safe pump body seal design. According to different pressure and structure, the pump body USES metal to face metal surface hard seal and metal wrap or O ring seal.
Unique structural strength design. The single-stage lift of the pump is allowed to reach 1.5mpa (150m), the outlet pressure can be 18Mpa(total lift 1800m), and the core package components of the bearing and rotor are not affected by the temperature change, and have excellent thermal shock resistance. The technology advanced high pressure self-balancing multi-stage centrifugal pump is designed based on the practical safety, economy, trouble-free operation ability and low maintenance cost of the whole operation process of the pump group. The main design features of the pump are summarized as follows: advanced modular design, a large number of local components that have been tested for a long time, and the parts are highly interchangeable.
High strength and high quality materials and a variety of choice of inlet and outlet flanges and nozzle design, improve the pump high allowable pipe load, high strength, high quality of the service life of the material structure and harmony of the pump shell structure is 5 times of ordinary casting, over-current parts of impeller and guide blade adopts precision casting, smooth level than normal casting efficiency more than 2%. It can meet the specific requirements of the system at any time.
Rapid assembly and disassembly design allows the pump to replace the seal and bearing parts without disassembling the pump body and inlet and outlet piping, guaranteeing less overhaul and inspection time.
High efficiency, high reliability, low cost combination. The best combination of impeller and guide blade, and reasonable.
The combination gap and wide axial throttle design make ZPD type high pressure multi-stage centrifugal pump still maintain its high stability and high operating efficiency after long running.
Good cavitation performance. Using the excellent impeller hydraulic model or special double suction impeller structure, the user has no.
It is necessary to configure the front pump or raise the height of the inlet tank.
The rotor parts of the impeller are arranged symmetrically. The rotor parts are divided into two sides of the high and low pressure zone, and the axial force is offset.
And balanced, pump operation mode to run the transient axial force and due to machining error and the residual axial force of the helical seal, a bearing part of thrust bearing agency, this kind of pump is cancelled the balancing disc or drum, the axial force balance institutions, such as from completely avoided because of instantaneous pump working condition changes, the balancing disc or drum rotor, holding in death of the failure cause, parts damage, broken shaft, and even burning motor accident.
Safe pump body seal design. According to different pressure and structure, the pump body adopts metal face.
Hard seal or o-ring seal.
According to the user requirements, the intermediate tap and minimum flow system can be added. The pump can replace the bearing and seal without removing the inlet and outlet pipes.
The pump USES symmetrical arrangement, can basically eliminate axial force, residual axial force from a pair of back-to-back Angle contact ball bearing.
Due to the unbalance device, the disk friction loss of the unbalanced disk has no balance return loss, so the pump efficiency is increased by 5-14% compared with the same type of multi-stage pump.
Due to the unbalance device, the failure of the balance device can be completely solved, which can cause the abrasion of the pump balance plate and the balance disc holder, and the rotors bite to die, etc., which greatly prolong the service life of the pump.
Safe pump body seal design. According to different pressure and structure, the pump body USES metal to face metal surface hard seal and metal wrap or O ring seal.
Unique structural strength design. Allow the single-stage head of the pump was 1.5 Mpa (150 m), outlet pressure can reach 18 Mpa (1800 m) total head, and make the bearings and rotor core covering parts is not affected by temperature change, has excellent thermal shock resistance.
The mechanical seal of the mechanical seal is completely overcome when the old type multi-stage pump shaft is running through the shaft. In the actual operation, it has been accomplished.
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