Plunger pump water-supply system, fire-fighting machine and building

Abstract

The invention provides a plunger pump water-supply system, a fire-fighting machine and a building. The plunger pump water-supply system comprises a plurality of plunger pumps, oil pumps and reversing valves. Each plunger pump comprises an oil cylinder and a water cylinder connected with the oil cylinder through a piston rod and further comprises a controller and a position sensor, wherein the position sensor is used for acquiring the moving position of the piston rod of the plunger pump, the signal output end of the position sensor is connected with the controller, and the signal output end of the controller is connected with the reversing valve. The controllers are used for controlling the action sequence of the multiple plunger pumps according to signals of the position sensors and / or controlling the moving speeds of the piston rods of the plunger pumps according to the signals of the position sensors. According to the plunger pump water-supply system, closed-loop control is adopted so that it can be ensured that the multiple plunger pumps act in the designed sequence for a long time, the pumping continuity is good, and flow pulsation is small. Meanwhile, through the position sensors, the speeds of the plunger pumps can be monitored and adjusted in time, and the water supply continuity of the system can be improved.

Description

technical field [0001] The invention relates to the technical field of water supply, and more specifically, to a plunger pump water supply system, a fire-fighting machine and a building. Background technique [0002] With the rapid development of the domestic economy, the population is gathering in cities faster and faster, and the height of commercial and civil super high-rise buildings continues to rise. Due to the high height, many floors, complex structures, and concentrated personnel, high-rise buildings burn violently during fires. It spreads rapidly and easily forms three-dimensional combustion, which brings great difficulties to fire extinguishing. To fight fires in high-rise buildings, it is possible to organize timely and uninterrupted water supply to the fire scene to meet the water volume and pressure required for fire extinguishing, which is directly related to the success or failure of fire fighting and rescue. Obviously, fighting fires in super high-rise buil...

AI Technical Summary

Problems solved by technology

[0008] (1) The hydraulic system is an open-loop control, and the speed of the oil cylinder cannot be monitored and adjusted in time. In actual work, the flow of the oil pump will not be evenly distributed to each plunger pump according to the ideal state, so there will inevitably be 2 or 2 piston pumps during continuous operation of the equipment. The problem of simultaneous reversing of more than one oil cylinder greatly reduces the continuity of water supply of the equipment

[0009] (2) The hydraulic oil source for all plunger pumps in the equipment is provided by a single pump or an engine. Once the pump or engine fails, the whole set of equipment will be in a paralyzed state. big hidden danger

[0010] (3) In order to ensure that the pressure and flow rate of the medium output port are equal during the positive and negative strokes, the plunger pump has a large design volume and is not easy to install, arrange and maintain

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