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XBC/GJ-HRZL axial flow deep well fire pump (long shaft deep well fire pump, vertical axial flow deep well fire pump, diesel engine deep well long shaft fire pump) is optimized on the basis of the original LC or OJ vertical long shaft pump Axial flow deep well fire pump, HRZL-TC/LYC diesel engine long shaft deep well pump consists of multiple centrifugal impellers and guide casings, water pipes, transmission shafts, pump bases, gearboxes, diesel engine assemblies, control cabinets and other components. The pump base, gearbox and diesel engine assembly are located above the wellhead, and the power of the diesel engine assembly is transmitted to the impeller shaft through the concentric drive shaft of the gearbox and the lifting pipe, thereby generating flow and pressure.
HR-XF-R/G (soft start) fire pump control equipment uses a microprocessor to control high-power thyristor components to realize the functions of software start, soft stop and power saving of AC induction motors. Soft start control cabinet Soft start refers to the process in which the output voltage of the device rises according to a rule, so that the voltage of the controlled motor rises from zero to full voltage, and the speed correspondingly smoothly accelerates from zero to rated speed. Soft start control cabinet The soft start can make the pump start and stop torque curve approach the pump torque characteristic curve, and clean up the electric and mechanical starting impact of the pump and the system to the greatest extent, so that the start is reliable and stable.
We all know that a foot valve must be installed at the water inlet of a centrifugal pump, but many people do not know why a foot valve should be installed and what the effect of installing a foot valve is. The reason why a centrifugal pump needs to be installed with a foot valve is that during the operation of the centrifugal pump, water must be introduced into the pump body and the entire water inlet pipeline through a vacuum pump or other methods. When the impeller rotates rapidly, the blades cause the water to rotate rapidly. The rotating water flies out of the impeller under the effect of centrifugal force. After the water in the pump is thrown out, a vacuum area is formed in the center of the impeller. The water from the water source is pressed into the water inlet pipe through the pipe network under the effect of atmospheric pressure (or water pressure). This cycle continues, and continuous pumping can be achieved. If the foot valve is not installed, then when the centrifugal pump stops working, all the water in the pipeline will flow back into the pool. In this way, the vacuum pump must be restarted or water must be refilled into the centrifugal pump when the centrifugal pump is started next time, which is time-consuming and laborious. If the centrifugal pump is equipped with a bottom valve, then when it stops, the bottom valve will automatically close under the pressure of water, and the water can remain in the pipeline. The centrifugal pump can be started directly next time, eliminating the step of filling water or opening the vacuum pump, which is very convenient. It is worth mentioning that if the centrifugal pump has a high head or a long water outlet pipe, the centrifugal pump should be equipped with a bottom valve, which can prevent the centrifugal pump from reversing when the water flows back, causing mechanical damage or impeller shedding.
HRZL-W fire-fighting stabilized pressure water supply equipment is composed of a water pump, an air pressure tank (the air pressure tank in this article refers to a capsule diaphragm tank), an electrical control cabinet, and necessary valves, pipelines and other accessories. Generally, we follow a Configure two water pumps with the same performance as a backup (in fact, they are mutual backups). Usually, the two water pumps work alternately automatically. When one of the water pumps fails, the other water pump is put into use: the air pressure tank is used as the equipment to stop and maintain pressure. The essential link is to supply water to the fire pipe network and maintain the pressure of the pipe network when the equipment is shut down. At the same time, it also plays the role of a pressure switch. The electrical control cabinet controls the start and stop of the water pump according to the pressure input signal to realize the automatic operation control of the equipment.
The leakage of submersible slurry pumps is mostly caused by aging and wear of the sealing device. In addition to replacing new seals, the following simple troubleshooting methods can also be adopted. 1. The rubber sealing ring in the nylon sealing seat is worn. The sealing ring can be taken out and then installed in a different position. If the fastening spring on the sealing ring loses its elasticity or breaks, the spring can be removed and tightened with a steel wire or iron wire of appropriate diameter. 2. The sealing ring of the submersible pump loses its elasticity due to long-term use. At this time, the sealing ring can be taken out, and then a piece of paper or cloth with a thickness of 0.3 to 0.5 mm can be cut into a pad slightly larger than the original sealing ring and installed in the groove, and then the original sealing ring can be installed. 3. The rubber sealing ring in the nylon sealing seat is worn. The sealing ring can be taken out and then installed in a different position. If the fastening spring on the sealing ring loses its elasticity or breaks, the spring can be removed and tightened with a steel wire or iron wire of appropriate diameter. 4. If the sealing ring is seriously worn, you can remove the nylon sealing ring, then apply butter on the asbestos rope, wrap it around the stainless steel sleeve and fill it slightly higher than the original nylon seat, then fill it with butter, and then press the nylon seat with bolts to compact it. If the sealing ring between the sealing box and the cast iron loses its elasticity, you can remove the sealing ring from the cast iron tank, find a piece of cardboard with a thickness of 0.6 to 1 mm, cut it into the same size, put it in the tank, and then put the sealing ring in. 5. If the rubber sealing ring of the oil hole is damaged, you can find a piece of tape, cut it into a hole slightly larger than the bolt, add a flat pad on it, and put it in the bolt oil inlet hole together.
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