Vertical Multistage Fire Pump
CDL/CDLF high pressure water pump is special in high pressure, made of stainless steel 304 or 316, all parts touch with liquid are of stainless steel. The pump is vertical non-self priming multistage centrifugal pump, which drived by a standard electric motor.The motor output shaft directly connects with the pump shaft through a coupling. The pressure resistant cylingder and flow passagecomponets are fixed between pump head and inlet and outlet section with tie-bar bolts. The inlet and outlet are located at the pump bottom at the same plane. This kind of pump can be equipped with an intelligent protector to effectively prevent it from dry-running, out-of-phase and overload.
· Urban water supply and pressure boosting
· Industrial circulating system and processing system
· Water supply for boiler, condensing system, high-rise building or fire fighting system.
· Water treatment and RO system
· Cooling water system
· TEFC motor,
· 50HZ or 60HZ 220V or 380V
· Protection class: IP55, Insulation class: F
4. Operation conditions:
Thin, clean, non-flammable and non-explosive liquid containing no solid granules and fibers
medium temperature: -15°c~+120°c
Capacity range: 1~180 m3/h
Head range: 6~305 m
50HZ Pump Performance Scope
- Q:Why can domestic pumps sometimes pump water and sometimes not?
- You pump 1. is fully automatic, 2. have small pressure tank 3., stop valve should be 1., tap water is interrupted, 2. water intake, water out of harmony
- Q:Submersible pump reverse impact on the pump
- Water pump is easy to burn out.Submersible pump is an important equipment for deep well water extraction. When in use, the whole unit dives into the water. The extraction of groundwater to the surface is water, mine rescue, industrial cooling, irrigation, water lifting, ship ballast, also can be used in fountain landscape, hot water submersible pump for hot spring bath, but also can be applied to the extraction of groundwater from wells, can also be used in rivers, reservoirs, canals and other water projects. Mainly used for irrigation and high mountain areas, drinking water, but also for the central air conditioning cooling, heat pump, cooling pump unit, city, factories, mines, railways, construction site drainage use. The general flow can be achieved (5m per hour, fand fand ~650m) head can reach 10-550 meters.There are several kinds of electric submersible pump, in line package is oil immersed and water invasion there is dry must first read the instructions before use, cannot be wrong, not long before use, must have to make the impeller turn, or because of long time card dead burning.Before the pump is opened, the suction pipe and pump must be filled with liquid. Open the pump, the impeller rotating speed, which leaves the liquid together with the rotation under the action of centrifugal force, the left outside impeller injection, injection of the liquid in the pump shell gradually slow the spread of indoor speed, the pressure gradually increased, and then from the pump outlet, the outflow discharge tube.At this time, in the leaves at the center of the vacuum area of low pressure liquid was thrown to the surrounding formation there is no air and no liquid, liquid pool at the surface of the liquid under the action of atmospheric pressure, through the suction pipe into the pump, the liquid is continuously pumped up from the liquid pool is also continuously from the outflow discharge tube.
- Q:Can the water from the fire pump enter the roof fire tank? Why?
- Here is the concept of "fire water tank", if the roof has fire water tank, fire pump should be able to roof fire water tank water supply, as long as there is sufficient pressure on the line. However, if the roof water tank is only a living water tank, the fire pump is not started, this is the two pipelines.
- Q:How to remotely control submersible pumps?
- Now the remote control of submersible pumps and pumps is very mature, and the cost is relatively low. We use the Ji'nan Huichi electronic pump remote controller controlled step-down start control cabinet, convenient Clockwork SMS can control the pump start and stop, and return to the working condition of the water pump, water pump overload or lack of power can also feedback fault message to the responsible person
- Q:55KW how large is the water pump wiring?
- The general centrifugal pump is a three-phase squirrel cage asynchronous motor with a power factor of 0.85I=P/U/1.732/COS=55KW/380V/1.732/0.85=98.3A, light load, such as the use of YJV cable, ZR-YJV-0.6/1, 3*35mm2 copper core cable can be, such as heavy load or select VV cable, the cross-sectional area should be extended to 3*50mm2
- Q:Why can't vertical water pump use spring shock absorber?
- Building water supply and drainage and heating engineering construction quality acceptance specification (GB50242-2002) on the 4.4 water supply equipment installation 4.4.6 regulations. Because the spring damper is not conducive to the stability of the vertical pump running, therefore, the vertical water pump damping device should not use spring shock absorber.
- Q:How do I calculate the power of the pump?
- Motor Power (kw) =0.163*Q*H*K/60/EOf which: Q is the flow, unit m^3/hH is the lift, unit ME is the efficiency value of the pumpK is the safety factor, generally 1.1.
- Q:How much is the flow rate of fire hydrant and spray shared water pump?
- Fire fire water is superimposed, at the minimum, the lowest 5L/S automatic spraying fire hydrant, light danger level 13.9L/S, the least is 18.9L/S, but the data is useless, the data are not spraying fire hydrant, concrete analysis of high-rise buildings like the dangerous level according to the calculation, the general design, the concrete building needs the high-rise building minimum 20L/S, automatic spraying dangerous level according to the general 30L/S, 50L/S need to flow
- Q:How many lift pumps should be used for 100 meters tall buildings?
- 35m lift around. HVAC pump lift is generally between 5~50m, the selection of the head is mainly to see the difference between water pressure. As head of 35m as an example, if the inlet height of 60m, so the theory of height =60+35=95m, if all pipe closed air conditioning water system, and resistance of the equipment for water is equal to the pressure difference is equal to the pump head to choose your height, and out of the water is the same, the resistance loss of lift all into the water. The calculated resistance loss is needed to pump lift. The resistance component (1) chiller resistance at 60-100kpa (2) water collector resistance in 120-200kpa (3) 20-50kpa (4) air terminal equipment body resistance is generally not less than 40kpa so 100m building the resistance calculation of estimated value = (1) 80kp+ (2) chiller resistance pipe, the collector resistance (140kpa+ 3) air terminal equipment 40kpa+ (4) body resistance 50kp=310kpa safety factor of 10% 320x1.1=341kpa H= P/ (head of pressure water density * acceleration of gravity g =352000/ (10m) X9.8 =34.8m fand) so we head for 35 meters
- Q:37KW how many contactors does the pump need to start directly?
- Direct start requires 250A contactor.Contactor is divided into AC contactor (voltage AC) and DC contactor (voltage DC). It is applied to power, power distribution and power consumption. Contactor broadly refers to the use of coils in industrial electricity that flow through the current to produce a magnetic field, so that the contacts are closed so as to control the load of the appliance.
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