1) Pump is open, it is necessary to require a light load process, the purpose is to prevent back pressure in pipe network in front of the water pump non-return valve valve case role back too fast, effect on the pump impeller, the water pump in the open under the heavy load, the current is too large, lead to motor burn down, the pump shaft bending, so if you want to realize this process, the traditional operation process, you must first open water pump, to pump reaches a certain speed, outlet to overcome back pressure under the situation that we can open, said: open the pump first, after the valve open. To control the process, only by establishing electric valves and pumps delay link to realize, in the absence of electric valve, through the artificial to complete, but the electric valve is often due to the failure or delay is not accurate, and artificial cannot accurately control delay time, often make the light load process failure, motor and pump failure appeared again and again, and this way work, effort, unreliable, cannot be achieved in the true sense of light load. 2) In the pump when the pump is stopped, to prevent water hammer impact to water pump and the outlet check valve, often first close the control valve, to stop the pump again, in this case, if all of a sudden power outage, electric control valve does not close in time, manual valves also cannot within a short period of time, relying on artificial closed, plus a non-return valve closed lax, makes the water pump reversal, or water hammer accident. 3) Check valve, pump export under the impact of water hammer pressure, often appear closed lax and valve plate broken phenomenon. And single rely on a water hammer eliminator to eliminate water hammer, is impossible, so, the urgent need for a device that can eliminate water hammer. Tianjin steam and water supply and drainage equipment manufacturing co. , LTD. Production of the booster pump control valve is in view of the above some disadvantages in the development, production, can completely solve the above problems, and need not manual and electric power operation, is a new type of energy-saving products. When the designer and the company leadership after contact with the booster pump control valve, after careful investigation, after careful analysis and comparison, the same conclusion: micro resistance slow close check valve biggest drawback is closed lax, and the damage rate is extremely high, is often used in one or a few times, the valve damage, maintenance, and multiple valve can replace the new type of hydraulic valve, which only Ann a valve can completely replace the electric valve, micro resistance slow close check valve and exhaust valve fully functional. Therefore, decided to use the valve in the actual installation. This product is simple and convenient installation, only need to install the valve in the outlet of the water pump, and add a repair valve can, without any electrical components form a complete set, can completely eliminate water hammer, so save water hammer eliminator, greatly saves installation space. Booster pump control Industrial Valves is divided into three parts: the main body, the diaphragm control room and by-pass pipe, by a diaphragm, diaphragm above for the cavity, connect with pipes, below the diaphragm for inferior vena, connected to the valve inlet pipe, small valve plate fixed on the valve stem, valve plate in slide up and down on the stem. When motor starts, the valve inlet pressure gradually increase, pressure water: 1) Pushing the upward force of a big disc, the valve can't immediately turn on ( Because the diaphragm control cavity on the back pressure) 。 2) Pressure through by-pass pipe into the inferior vena diaphragm control chamber. As inferior vena into water increases, when the pressure is greater than the cavity pressure of inferior vena, inferior vena pressure water drive diaphragm moves up, the small valve plate of big pressure on the valve plate. 3) Big valve plate has a force pushing its move up, in under the action of the two forces, gradually open the valve, thus reaches rev pump light load, the sluice gates were closed, slowly open. When all of a sudden power failure or accident stop pump or normal stop pump, valve inlet pressure water flow is reduced, the valve plate also drops, when its velocity is zero, Namely the inlet velocity is zero) , the valve plate quickly shut down as a result of its own gravity ( Time 3 s ~ 5 s) , can prevent most of the water flow back, form a kind of hydraulic pressure difference before and after the valve, the pressure of water on the one hand, through a small valve plate three pressure at the bottom of the tank pressure. 4) Pressure water from the by-pass pipe into the control of diaphragm chamber ( The process of suction pressure cavity, can effectively absorb part of the water energy) When the cavity pressure water is greater than the inferior vena, pressure water moves the diaphragm move down, when the inferior vena pressure water all come out, the valve plate slowly down, return to standby mode, the process slowly-closing time can be adjusted ( 3s～150s) , when the valve plate is fully closed, way too tight. Because of its downtime with quick closing, linear pressure, suction pressure cavity and slowly-closing four to eliminate water hammer and other functions, so the downtime when none noise points, the effect is very good. The feature of this new type of hydraulic valves are: 1) Without manual, without power, completely automatic, rely on the water pump and stopping time on the pressure difference between the inferior vena produce automatic operation and control, to realize the automatic water supply provided favorable conditions. 2) Both control valve, check valve and water hammer eliminator three functions, and also has the function of the linear pressure relief, save installation space, to a certain extent reduce the wear and tear. 3) Ultra wide body design. The minimum discharge to the valve size 1. Maximize 1 times, more than 2 times, opening and closing pressure is low, so in the process of work, the head loss is small, the pressure loss is small. Booster pump in use of pressure pump can completely eliminate water hammer. To sum up, the booster pump application in pressure pump, can save installation space, reduce the loss, and thoroughly eliminate water hammer effectively and reduce the accident rate, and the economic feasible and make the water supply enterprise's heart beat safely and reliably.
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