Variable Flow Constant Pressure Fire Tangent Pumps

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Product Description:

XBD-HY(HYL) series variable flow constant pressure fire tangent pumps are third-generation new products updated on the basis of XBD-HY(TB) series variable flow constant pressure fire pumps. Blended with the advanced technology from USA and Switzerland, and developed under the guidance of famous professors from Jiangsu Institute of Technology, this series of products are superior to the former kind of fire tangent pumps. Designed to the theory of partial emission pump, this product is the first of its kind at home, with its performance and technical specifications fully in compliance with the newly enacted standard of GB6245-2006 Performance Requirements and Test Methods for Fire Pumps.

Features:
1) The most distinguishing characteristic of XBD-HY(HYL) series variable flow constant pressure fire tangent pumps is variable flow constant pressure with flat flow and head curves, i.e. head remains almost unchanged (within 5%) when pump c:hanges in the range from zero flow to the maximum required flow, so as to ensure no overpressure under small or zero flow and to avoid failure of water supply under large flow. This characteristic meets the service requirements on fire control site to guarantee the normal work of fire control and to greatly improve the efficiency of fire extinguishment, the dependability of fire service equipment and the security of fire fighters.

2) This series of pumps cover vertical, horizontal and split fire pumps, which are featured by compact structure, small floor area, reliable mechanical seal, reasonable internal structure, high dependability, long service life, smooth running, little noise, maintenance free and lifetime warranty.

3) The drive motors of this series of pumps are Y series motors to achieve the function of constant pressure with no need to use pneumatic tank and variable frequency control, which has greatly lowered the cost of engineering construction. This is a great breakthrough in the technology of fire pumps in our country, which can bring remarkable social and economic benefit. The outlets of this series of pumps may be adjusted to the directions of 0°, 90 °, 180° and 270°.

Main Application:

XBD-HY(HYL) series variable-flow constant-pressure fire pump is mainly used for fixed fire systems in industrial and civil buildings, such as hydrant, automatic sprinkler and water spraying fire-extinguishing systems, as well as for water supply systems for domestic use, fire control and public domestic use, water supply for buildings, civil works, industrial and mining uses, boiler and so on.

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Q:Pump suction and pressure side road why should vacuum table and pressure gauge, and what role they have?
The pump suction and pressure side roads shall be equipped with a vacuum meter and a pressure gauge to monitor the operation of the system. When the pump is running, if the suction side of the vacuum decreases, indicating that the performance of water pump or water absorption pipe leakage; if the vacuum increases, it may be blocked suction pipe. The pressure on the water side is too large. It may be less water or the water pipe is blocked. If the pressure drops, the water consumption may increase or the water pump performance will decrease.The pressure gauges on the water side also play an important role in observing the pressure changes at the start of the pump to determine when to open the outlet valve. Usually larger pump starts, should first close the outlet valve to reduce the starting current, until the pressure of the pump rising and stable, then open the outlet valve.
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:Water pump 50HZ impeller and 60HZ what is different, why not the same?
Water pump 50HZ impeller and 60HZ impeller, its outer diameter is not the same, 60HZ impeller slightly smaller. Because the speed of the impeller of 60HZ is faster, the impeller is a little smaller.Flow rate and speed, impeller diameter into a relationship: Q1/Q2 = n1/n2=D1/D2;Head and speed into two relations: H1/H2 = (n1/n2) 2Motor shaft power and speed into three relations: P1/P2 = (n1/n2) 3From the above deduction, we can know that the motor speed formula is n=60f/p, in which n is motor synchronous speed, and F is supply frequency. P is the pole number of the motor. It is known that the power supply frequency of the motor is proportional to the speed of the f. Therefore, to obtain the same head or flow, high speed, to use a smaller impeller.
Q:Pump adapter joint net outside tube, what is the principle?
First, the working principle:Fire pump adapter is connected with the public security fire department fire engine or motor fire pump fire water transport through the fire pump adapter interface fire water supply pipeline to the buildings, the fire hydrant indoor get sufficient pressure to solve the problem of water shortage and other difficulties or because of fire water supply pipeline inside the building due to low water pressure caused by the fire fighting for high-rise building, indoor use and normal operation of fire pumps and intermittent water supply situation in. The installation types include floor type, underground type and wall type.A brief introduction to the two, pump adapter:When a fire occurs, the fire engine pump can quickly and conveniently through the interface and building the adapter in the fire fighting equipment is connected, and the water pressure, so the indoor fire equipment pressure with sufficient water to extinguish, different floors of fire, effectively solves the problem of building fires, fire fighting because of difficulties or indoor fire fighting equipment due to lack of adequate water pressure to the fire.
Q:Relationship between power and flow of sewage pump
Severe N= gamma gamma ETA QH/1000 liquid (ox / m3) - N- power efficiency eta (kW/h) - head of M Q- volume flow (M / sec)1, power *0.6= flow * lift *9.82, for the water treatment industry, the flow of cubic meters / hour units,Power = (flow * lift *9.8) / (3600*0.6)3, power = flow * lift *0.0045 (general 50%--90%, large pump higher)
Q:Is the pump lift horizontal or vertical?
A vertical, vertical lift is one meter (see environment), usually 5~10 times the horizontal distance
Q:What does the lift of a pump mean?
Lift lift height = water raise height = total lift lift height + water = water is expressed in M by H (m)
Q:What is a variable frequency water pump? What's the difference between a variable frequency pump and an ordinary pump?
In fact, the key to this problem is to figure out what is frequency conversion, why frequency conversion, know this problem, we can easily understand the difference between frequency converter pump and ordinary water pump.We often say that the frequency is a frequency conversion process of the motor, the frequency of the motor to change the motor speed, so as to achieve the water pump flow head technology parameters are adjusted to control the role of.Variable frequency water pump refers to the motor, variable frequency pump should be driven by variable frequency motor pumpFrequency conversion, that is, adjustable frequency, frequency conversion motor is able to adjust the speed, adjust the flow, to achieve the purpose of energy saving, but also start small current, maintenance advantages of small workload.Ordinary water pump is to use ordinary motors to drive water pump rotation, that is called the power frequency motor. Our daily use frequency 50Hz, can not speed. Water pump adjustment flow through the valve throttling to achieve the same, so it is not energy-saving. The fear of harm in Wei Di apps
Q:The problem of single phase pumps
The capacitor is broken. Change it.
Q:The role of water replenishing pump in circulating system
There are three ways of constant pressure in water system. 1, the expansion tank constant pressure, this method applies to small and medium water systems, low cost. 2 water pump constant pressure, the role is when the system because the water shortage during the operation, resulting in insufficient pressure, the water supply system can play the role of water pressure. 3 pressure tank fixed pressure, pressure tank fixed pressure at the same time, also need replenishment pump water, the individual feel that the first two kinds of economic reality

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