Performance parameters (7)

Product OverviewXBD-HY vertical two-stage pump (multi-stage) fire pump is used to transport clean water without solid particles and liquids with physical and chemical properties similar to those of non solid particles. Mainly used for boosting water supply in fire protection systems, residential water in high-rise buildings, and can also be applied to water supply and drainage in factories and mines. The flow range for conveying liquids is 10-100L/S, the pressure range is 0.4-2.0Mpa, the matching power range is 3.0-200KW, and the caliber range is DN80-DN200mm.The performance of XBD-HY vertical two-stage pump (multi-stage) fire pump set,The technical conditions comply with the requirements of the newly issued national standard GB6245-2006 "Fire Pump" and the mandatory product certification implementation rules CNCA-C18-03:2014, as well as the mandatory product certification implementation rules CCCF-MHSB-08. The product has been tested and qualified by the Fire Product Qualification Assessment Center of the Ministry of Public Security, and has obtained the

China Compulsory Certification for Products, also known as CCCF Certificate (3C Certificate for Fire Products)

.Main featuresThe XBD vertical two-stage pump (multi-stage) fire pump produced by our company is a multi-stage fire pump

centrifugal pumpThe high head characteristics of the centrifugal pump are combined with the compact structure, light weight, mechanical seal and other advantages of the single feed centrifugal pump; This pump not only meets the requirements of high head water use, but also has the advantages of compact structure, light weight, low cost, easy installation, and beautiful appearance.For example, for a 200 meter water pump in Yangcheng, a 10 level pump should be selected

Multi-stage pump

The single suction two-stage centrifugal pump produced by our company can achieve a head of 200 meters with only two stages, reducing the height of the pump and lowering the cost.

3. According to the requirements, the inlet and outlet can be selected in several different directions, such as 90 °, 180 °, and 270 °, to meet the connection needs of different occasions.

Installation instructions for two-stage pump

The weight of the pipeline should not be borne on the pump during installation, otherwise it is easy to damage the water pump;

During installation, the anchor bolts must be tightened, and the pump should be checked at regular intervals to prevent loosening, in order to avoid severe vibrations during pump start-up that may affect the pump's performance;Before installing the water pump, carefully check whether there are any hard objects (such as stones, iron sand, etc.) in the flow channel that affect the operation of the water pump, in order to avoid damaging the overcurrent components during the operation of the water pump;In order to maintain convenience and ensure safe use, one valve is installed on each inlet and outlet pipeline of the pump, and a pressure gauge is installed near the pump outlet

high lift pump

To prevent water hammer, a check valve should also be installed in front of the outlet gate valve to cope with sudden power outages and other power loss accidents, thereby ensuring that the water pump operates under optimal conditions and increasing its service life;

When the pump is used in situations with suction head, it should be equipped with a bottom valve, and the inlet pipeline should not have too many bends. At the same time, there should be no water or air leakage to avoid affecting the suction capacity of the pump;

To prevent impurities from entering the pump and blocking the flow path, a floor filter should be installed in front of the pump inlet to improve performance;

Before installing the pipeline, rotate the rotor components of the water pump to avoid friction or jamming, otherwise the pump should be disassembled to check the cause.

Double stage pump start-up and operation

Rotate the motor by hand, and the impeller should have no jamming or grinding phenomenon, and rotate flexibly;

Open the inlet valve, open the exhaust valve to fill the entire pump chamber with liquid, and then close the air valve;

When transporting hot liquids, preheating should be carried out before starting, with a heating rate of 50 ° C/h. The preheating of the pump is achieved by continuously circulating the transported liquid to ensure uniform heating of all parts of the two-stage pump;

You should first rotate it a few times by hand to allow lubricating water to enter the mechanical seal end face;

Jog the motor to determine if the direction of rotation is correct;

Fully open the inlet valve and close the outlet pipeline valve;

Connect the power supply, gradually open the valve on the discharge pipeline when the pump reaches normal speed, and adjust it to the desired working condition;

Pay attention to the instrument readings and check if the temperature rise at the motor and bearing is greater than or equal to 70C. If any abnormal situation is found, it should be dealt with in a timely manner.

Double stage pump shutdown

Gradually close the outlet pipeline valve and cut off the power supply;

Close the inlet valve;

If the ambient temperature is below 0 ° C, the liquid in the pump air should be drained to prevent the water pump from freezing and cracking;

If it is not used for a long time, it should be disassembled, cleaned, packaged and stored.

Maintenance and upkeep of two-stage pumps during operation

The inlet pipeline must be highly sealed and must not leak or leak water;

Prohibit long-term operation of pumps under cavitation conditions;

It is prohibited to operate the motor with excessive current for a long time under high flow conditions;

Regularly check the motor current during pump operation to ensure that the pump operates within the design operating range as much as possible;

The pump should be supervised by a dedicated person during operation to avoid accidents;

Mechanical seals are strictly prohibited from working under dry grinding conditions;