Product Brief
Xbd-w horizontal multistage fire pump is a series of new energy-saving products. The utility model has the advantages of high efficiency, low operation noise, good anti cavitation performance, reasonable structure, long service life, etc. It is mainly used for conveying clear water without solid particles and liquid with physical and chemical properties similar to water. It is mainly used for boosting water supply of fire fighting system, water supply and drainage of factories and mines, boosting water supply of high-rise buildings, long-distance water supply, heating, bathrooms, circulating pressurization of cold and warm water of boilers, water supply of air conditioning cooling system and equipment matching.
The performance and technical conditions of xbd-w horizontal multistage fire pump produced by our company meet the requirements of gb6245-1998 fire pump performance requirements and test methods newly issued by the state. All the products of HuLong are designed and optimized by computer. Our company has strong technical force, rich production experience and perfect detection means, so as to ensure the stability and reliability of product quality.
Model meaning
Installation instructions
1. During installation, the weight of the pipeline shall not be borne on the pump, or the pump may be damaged easily;
2. The pump and motor are integral structures, which have been calibrated by the manufacturer before delivery, so there is no need to adjust during installation, so it is very convenient during installation;
3. The foundation bolts must be tightened during installation, and the pump shall be checked every certain interval to prevent it from loosening, so as to prevent the pump performance from being affected by the violent vibration during the start-up;
4. Before installing the water pump, carefully check whether there is any hard substance (such as stone, iron sand, etc.) in the flow passage of the pump that may affect the operation of the pump, so as to prevent the overflow parts from being damaged in the afterlife of the pump;
5. In order to maintain convenience and use safety, install a regulating valve on the inlet and outlet pipeline of the pump and a pressure gauge near the inlet and outlet of the pump. For high lift pumps, in order to prevent water hammer, a check valve should also be installed in front of the outlet gate valve to deal with power loss accidents such as sudden power failure, so as to ensure that the pump operates under the best conditions and increase the service life of the pump;
6. When the pump is used in the situation with suction head, it should be equipped with bottom valve, and the inlet pipeline should not have too many bends, and there should be no water and air leakage, so as to avoid affecting the suction performance of the pump;
7. In order to prevent impurities from entering the pump and to block the flow channel and affect the performance, a filter shall be installed in front of the pump inlet;
8. Rotate the rotor parts of the water pump before binding the pipeline, and there shall be no friction sound or jamming, otherwise the pump shall be disassembled for inspection.
Product characteristics
1. The pump is compact in structure, small in volume, beautiful in appearance, small in floor area and low in construction cost;
2. The rotor parts of the pump are supported by rolling bearings at both ends, and the pump runs stably;
3. The inlet of the pump is in horizontal direction, and the outlet is arranged vertically upward to simplify the pipeline;
4. The motor of the pump is of horizontal structure, which is convenient for maintenance.
Xbd-tswa horizontal multistage fire pump is multistage single suction centrifugal pump, and the installation form is horizontal.
It can be installed in many ways according to the site conditions. And depending on the flow and head requirements, parallel and series mode should be adopted to increase the required flow and head.
The bearing is sealed with low noise and has been injected with lubricating grease before leaving the factory, which can ensure continuous operation for more than two years. The concentricity of the components is high, the pump impeller has excellent dynamic balance, no vibration during operation, and the service environment is improved
The pump shaft seal is a mechanical seal, which solves the serious leakage of the conventional centrifugal pump packing, increases the service life, and ensures the clean and tidy operation site.
The parts that may produce friction during the rotation of the pump are made of wear-resistant, corrosion-resistant and high anti-seize materials to ensure reliable operation, reduce noise, and avoid the generation of rust water, blocking spray and other fire-fighting devices, greatly extending the service life and rust seizure after shutdown.
Maintenance and service
Maintenance of multistage fire pump in operation
1. The water inlet pipe must be highly sealed and free from water and air leakage;
2. It is forbidden to operate the pump for a long time under the condition of turbid steam;
3. It is forbidden to operate the motor for a long time when the pump is under the condition of large flow;
4. Regularly check the motor current value during the pump operation to make the pump operate within the design working condition range as far as possible;
5. The pump shall be watched and closed by specially assigned person during operation to avoid accidents;
6. After long-term operation of the pump, when the noise and vibration of the unit increase due to mechanical wear, the pump shall be stopped for inspection, and vulnerable parts and bearings can be replaced if necessary. The maintenance period of the unit is generally one year.
Mechanical seal maintenance
1. The lubricating fluid of mechanical seal shall be clean and free of solid particles;
2. It is strictly prohibited to work the mechanical seal under dry grinding;
3. Before starting, the pump (motor) shall be turned for several turns to prevent the mechanical seal from breaking and damage due to sudden starting.
Xbd-w multistage fire pump preparation before starting
1. Turn the motor by hand, and the impeller shall be free of jamming and wear, and the rotation shall be flexible;
2. Open the inlet valve, open the exhaust valve to fill the whole pump cavity, and then close the exhaust valve;
3. If the hot liquid is to be delivered, it shall be preheated before starting, with the heating speed of 50 ℃ / h. the preheating of the pump is achieved by continuous circulation of the delivered liquid, so as to make all parts evenly heated;
4. Rotate it by hand for several times to make the lubricating water enter the mechanical seal face;
5. Jog the motor to determine whether the steering is correct.
Start and operation of xbd-w horizontal multistage fire pump
1. Fully open the outlet valve and close the discharge pipeline valve;
2. Turn on the power, when the pump reaches the normal speed, gradually open the valve on the discharge pipeline, and adjust to the required working condition;
3. Pay attention to the reading of the instrument and check the leakage of the shaft seal. Normally, the mechanical seal is 3 drops / min. check that the temperature rise at the motor and bearing is ≤ 70 ℃. If any abnormality is found, handle it in time.
Parking
1. Gradually close the discharge pipeline valve and cut off the power supply;
2. Close the inlet valve;
3. If the ambient temperature is lower than 0 ℃, the liquid in the pump shall be drained to avoid frost crack of the pump;
4. If it is out of service for a long time, the pump shall be disassembled, cleaned, packed and kept.
performance parameter
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