Product Overview:
DP Pump is a self Cbalancing multilevel boiler feed pump with single-suction, multievel and sectional structure. This series of pumps are suitbalbe for medium and low pressure boiler water feeding, and high-pressure boiler water feeding for thermal power plant, as well as high-lift water supply and drainage of factories and cities. They are used in transferring water or other liquid with similar physical and chemical properties to water. Temperature of media being transferred can vary from -20~160
Efficient energy-saving:
Using advanced hydraulic model, independent R&D energy efficient products. Good centering of impeller and guid vane channel and efficiency will not significantly drop as balancing disc wears and rotor components move forward. No leakage of balancing water reduces loss of volume and improves pump efficincy and pump efficiency is on average 2-5% higher than normal DG pump.
New structure:
With symmetrically arranged impeller rotor components, axial forces generated by all levels of symmetrical impellers forces offset each other and automatic balancing of huge axial thrust within pump cavity can be realized without the balcancing disc structure.
New technology:
Unique throttling and pressure reduction devices, odd-lecel balancing device.
High reliability:
By canceling easy-failing balancing disc, pump reliability is greatly improved, maintenance frequency and maintenance cost are reduced.
Low maintenance cost and long life time
By adopting precision casting and unique throttling and pressure reducing devices for auxiliary support, pump vibration and noise are greatly reduced and service life is prolonged.
With short gaps in the both ends of support, XS type pump works stably with less noise and vibration. It can be risen speed operation to meet wider usage. Being inlet and outlet located in the same center line, the pipelines arrangement looks simple and beautiful. The rotor can be operated in reverse direction to avoid damage to the pumps from water hammer. Unique design of high temperature, using middle support, thickening pump casing, seal cooling and oil lubrication bearing make XS type pump suitable for working at 200, especially for heat supply newtwork requirements. XS type pump case body can be vertically or horizontally installation acoording to different working condition, with mechanical seals or packing seals. Wtih industrial designs to the shape of XS type pump, the line of pump is clear and beautiful to in line with modern aesthetics.
Cost advantage:
1. Using the advanced hydraulic model, the efficiency of XS pump is 2%~3% higher than the same type pumps. The operating cost minimum.
2. The vacuum height of XS type pump is risen 1-3 meter to reduce land construction investment and to extend the service life.
3. Using inport brand bearing, such as SKF, NSK and using various pump material make XS type pump suitable for any site working condition and minimize the maintenance cost.
Maintenance advantage:
1. With container type mechanical seal, the mechanical seal of pump is very easy and simple to replace.
2. With elastic ripess assembling, the rotor parts is easy and rapid to assembly and disassembly.
3. It is unnecessary to make adjustment to any gap when assembling.
Pipeline centrifugal pumps are general-purpose equipment for conveying clear water and liquids with similar physical and chemical properties, widely used in industrial and urban water supply and drainage, high-rise building pressure boosting, fire-fighting systems, HVAC circulation and other fields [2]. According to the installation form can be divided into vertical and horizontal, according to the impeller structure is divided into closed, open and semi-open [1], the adaptable medium temperature range -20 â?? to 240 â?? [3], typical models include ISG, ISW, IRG, etc. [2] [4].
The equipment consists of impeller, pump body, sealing ring and other core components, the impeller rotates to generate centrifugal force to achieve liquid transport, the pump body plays a supporting role, and the sealing system to protect the operating vacuum. It adopts modular piping design, equipped with high-efficiency hydraulic model, supports electric drive and direct connection structure, featuring low noise, small footprint and easy maintenance. Installation requires precise calculation of suction height and ensuring pipeline sealing, and the performance curve reflects the relationship between flow rate, head and power [4]. Common faults such as air binding can be solved by filling water and exhausting air, and the bearings and sealing parts need to be overhauled regularly [2].
Submerged pump [1] is a positive pressure conveying vertical pump, which can effectively solve the problem of air resistance and cavitation. The explosion-proof level of the conveyed material determines the submerged pump products with different structure, working principle, classification, scope of application, product advantages and disadvantages and mode of operation, which can be simply divided into two categories of traditional submerged pumps (explosion-proof outside the tank 1 area, 0 area inside the tank is not explosion-proof) and new type of submerged pumps (explosion-proof outside the tank 1 area, explosion-proof inside the tank 0 area).
Submerged pumps are vertical pumps in which the impeller, pump body, and other flow-through parts are submerged in the material being conveyed, and are connected to the motor by a shaft. Submerged pumps are made according to the different needs of reaching into the length of the container. Submerged pump and material contact parts, generally according to the requirements of the material selection, metal and non-metallic materials. Such as 304, 316, 316L, engineering plastics, fluorine plastic and so on.
Diaphragm pumps are designed to protect columns and cylinders by separating the liquid being pumped from the columns and cylinders with the aid of a membrane. The left side of the diaphragm in contact with the liquid are made of corrosion-resistant materials or coated with a layer of corrosion-resistant substances; the right side of the diaphragm is filled with water or oil.
Diaphragm pumps, also known as control pumps, is the main type of actuator, by accepting the control signal output from the regulator control unit, with the help of power operation to change the fluid flow. Diaphragm pump in the control process is to accept the regulator or computer control signals, change the flow of the regulated medium, so that the regulated parameters are maintained in the required range, so as to achieve the automation of the production process. If the automatic adjustment system compared with the artificial adjustment process, the detection unit is the human eye, regulation and control unit is the human brain, then the implementation of the unit - diaphragm pump is the human hand and foot. To achieve the process of a parameter such as temperature, pressure, flow, level and other regulatory control, are inseparable from the diaphragm pump.
Air operated diaphragm pumps are commonly used in five materials: plastic, aluminium alloy, cast iron, stainless steel, Teflon. Electric diaphragm pumps have four materials: plastic, aluminium alloy, cast iron, stainless steel. Diaphragm pump diaphragm according to different liquid media were used nitrile rubber, neoprene, fluorine rubber, PTFE, PTFE, etc. placed in a variety of special occasions, used to pump a variety of media to meet the needs. [2].
