32results about How to "Stable water supply pressure" patented technology

The invention discloses a pressure-superposed water supply device and relates to a water supply device for a high-rise or small high-rise storied building. The pressure-superposed water supply device comprises a regulation tank, a pressure superposition device and a control cabinet, as well as an ultraviolet water purifier, a pressure-stabilizing and energy-storing tank and a nitrogen bottle, wherein the water outlet of the regulation tank is connected with the water inlet of the ultraviolet water purifier, the water outlet of the ultraviolet water purifier is connected with the water inlet of the pressure superposition device, the water outlet of the pressure superposition device is connected with the pressure-stabilizing and energy-storing tank, a water supply interface is arranged on apipeline used for connecting the water outlet of the pressure superposition device with the pressure-stabilizing and energy-storing tank, the nitrogen bottle is respectively communicated with the upper part of the cavity of the regulation tank and the upper part of the cavity of the pressure-stabilizing and energy-storing tank via a pressure reduction valve, liquid level meters are respectively arranged on the regulation tank and the pressure-stabilizing and energy-storing tank, and a pressure gauge is arranged on the pressure-stabilizing and energy-storing tank. The pressure-superposed watersupply device can sterilize and disinfect tap water and further provide the tap water for a user, even a tap water pipeline is polluted, the user can safely and securely use the tap water; when the user uses a small amount of the water, the pressure in the water supply pipeline drops slowly, and the pressure-superposed water supply device is small in number of starts of a pressurization pump and low in energy consumption.

The invention provides a sweeping spraying type slope rainfall system composed of a rainfall support device, a rainfall sweeping spraying control device and a rainfall waterway device. The variable-slope sweeping spraying type slope rainfall test device is used for simulated rainfall of slopes with the different slope types outdoors or indoors in geotechnical engineering, is good in rainfall uniformity, stable in water supply pressure and good in controllability, can simulate all-day continuous rainfall in a natural state, regulate and control the rainfall intensity and achieve light-rain rainfall simulation, is provided with rainfall spray heads which have the stable vertical distance to the ground and can do reciprocating motion, can simultaneously output multiple ways of water flows with the uniform and stable water pressure and is stable and downward in spray head spraying direction, convenient to disassemble, assemble and transport, capable of adjusting the slope and suitable for the double-faced slope.

The invention relates to a water preparing machine for accurately controlling electrolysis, which comprises a filter and an electrolytic bath, wherein the electrolytic bath is provided with an acidic water outlet and an alkaline water outlet. The water preparing machine comprises a water storage type water tank, wherein a water outlet of the water storage type water tank is connected with the filter, and a water outlet of the filter is connected with a water inlet of the electrolytic bath; an electrolysis control circuit comprises an SCM, a pressure sensor which is arranged at the bottom of the water storage type water tank as well as a thyristor and a current sampling resistor in an electrolytic bath electrolyzing loop; an instantaneous quality signal obtained by the pressure sensor enters the AD0 end of the SCM, an instantaneous current signal obtained by the current sampling resistor enters the AD1 end of the SCM, and a control signal of an MOS (Metal Oxide Semiconductor) pipe control pole is output by the PWM (Pulse Width Modulation) end of the SCM.

The invention provides a water pump total-lift work control method. A pressure sensor is used for detecting the running pressure of a water pump, a controller is used for automatically calculating the stop pressure of the water pump, and starting and stopping of the water pump are controlled. The total-lift work control over the water pump is achieved, the starting and stopping frequency of the water pump is reduced, and the stable water supply pressure is provided for a user. Meanwhile, a water pump water shortage detection method and a water supply system water leakage detection method are provided. The invention further provides the controller and the water pump controlled by the water pump total-lift work control method; the controller has the function of controlling the starting and stopping of the water pump through the water pump total-lift work control method; and the water pump has the beneficial effects that the starting and stopping frequency is low, the structure is simple, the water supply pressure is stable, and cost is low.

The invention relates to an electrolysis water producing machine comprising a water source, a filter and an electrolysis cell, wherein the electrolysis cell is provided with an acid water outlet and a basic water outlet; a constant temperature heating device is arranged between the filter and the electrolysis cell, and the temperature of water passing through the constant temperature heating device from the filter is 35+ / -5 DEG C. The invention has the advantages that the installing position of the constant temperature heating device decides that the heated water is common neutral water, and the heating process can not influence active indexes of an ORP value and the like of electrolyzed alkalescent drinking water at the water outlet; since two branches are adopted after constant temperature heating, both common neutral water and electrolyzed water can be provided, and particularly, the heating temperature of the water is controlled at 35+ / -5 DEG C, which can ensure that the common neutral water or the electrolyzed water with moderate temperature can be obtained in four seasons; the water source of the electrolysis water producing machine can be tap water or can adopt a storage type water tank, and water in the water tank can not be polluted by bacteria after an ultraviolet bactericidal lamp is arranged in the storage type water tank, and a water pump can ensure a stable watersupply pressure.

The invention discloses a water supply equipment control system. The system comprises a plurality of water pumps, two frequency converters, a control unit, a switching group and a water pressure sensor; the control ends of the two frequency converters are connected to the control unit, and the output ends of the two frequency converters are connected to a node A; the input end of each water pump is connected with the switching group, and the switching group is respectively connected with the control unit and the node A; the control unit controls the operation of the switching group; the switching group controls conduction or cut-off of the input ends of the water pumps and the node A; and the water pressure sensor is connected with the control unit and used for detecting the water outlet pressure of a water using point. The invention also discloses a control method of the water supply equipment control system. The system has the advantages of realizing soft start and soft stop of the water pumps, eliminating the impact current when the water pumps are started, avoiding water hammer effect, stabilizing the water supply pressure, prolonging the service life and the reliability of the equipment and better ensuring the water using safety of a user.