SU879032A1

SU879032A1 - Apparatus for filling centrifugal pump

Info

Publication number: SU879032A1
Application number: SU792762521A
Authority: SU
Inventors: Сергей Ервандович Калайджян
Original assignee: За витель
Priority date: 1979-04-09
Filing date: 1979-04-09
Publication date: 1981-11-07

Description

Изобретение относитс к области насосостроени , в частности к конструкции устройства дл заполнени центробежного насоса , и может быть использовано при проектировании систем дл запуска всасывающих насосов.The invention relates to the field of pump construction, in particular, to the design of a device for filling a centrifugal pump, and can be used in designing systems for starting suction pumps.

Известно устройство дл заполнени центробежного насоса, содержащее подпорную емкость с клапанами и трубопроводами , подключенными к входу насоса 1.A device for filling a centrifugal pump is known, which contains a holding tank with valves and piping connected to the inlet of the pump 1.

Недостатком такого устройства вл етс медленное заполнение насоса.The disadvantage of such a device is the slow filling of the pump.

Наиболее близким к изобретению вл етс устройство дл заполнени центробежного насоса, содержащее бак с перекачиваемой жидкостью, подсоединенный ко входу и выходу насоса патрубками с обратными клапанами 2.Closest to the invention is a device for filling a centrifugal pump containing a pumped liquid tank connected to the inlet and outlet of the pump by nozzles with non-return valves 2.

Недостатком устройства вл етс медленное заполнение насоса.The disadvantage of the device is the slow filling of the pump.

Цель изобретени - ускорение процесса заполнени .The purpose of the invention is to accelerate the filling process.

Цель достигаетс тем, что бак выполнен в виде пневмогидравлического аккумул тора , к гидравлической полости которого подключен источник давлени , а пневматическа снабжена манометром.The goal is achieved by the fact that the tank is made in the form of a pneumohydraulic accumulator, to the hydraulic cavity of which a pressure source is connected, and the pneumatic one is equipped with a manometer.

На чертеже дана схема устройства.The drawing is a diagram of the device.

Устройство дл заполнени центробежного насоса содержит бак с перекачиваемой жидкостью, подсоединенный ко входу и выходу насоса 1 соответственно патрубками 2 и 3 с обратными клапанами 4 и 5, причем бак выполнен в виде пневмогидрав5 лического аккумул тора 6, к гидравлической полости 7 которого подключен патрубком S источник давлени (не показан), а пневматнческа полость 9 снабжена манометром W. Насос 1 снабжен всасывающимA device for filling a centrifugal pump comprises a tank with pumped liquid connected to the inlet and outlet of pump 1, respectively, by pipes 2 and 3 with check valves 4 and 5, the tank being made in the form of a pneumo-hydraulic battery 6, to the hydraulic cavity 7 of which is connected by pipe S source pressure (not shown), and pneumatic cavity 9 is equipped with a pressure gauge W. Pump 1 is equipped with a suction

10 рукавом 11.10 sleeves 11.

Устройство работает следующим образом .The device works as follows.

В пневмогидравлическпй аккумул тор 6, в котором содержитс воздух под атмосферным давлением, через патрубок 8 нагнетают воду до рабочего давлени центробежного насоса /. Цри этом имеющийс в пневмогидравлическом аккумул торе 6 воздух сл имаетс до рабочего давлени центробежного насоса L Таким образом устройство зар жаетс один раз на весь срок службы центробежного насоса 1.In a pneumohydraulic accumulator 6, in which air is kept under atmospheric pressure, water is pumped through pipe 8 to the working pressure of a centrifugal pump. By this, the air present in the pneumohydraulic accumulator 6 is reduced to the operating pressure of the centrifugal pump L. Thus, the device is charged once for the entire lifetime of the centrifugal pump 1.

Claims

It is necessary to fill the suction hose 11 and the centrifugal pump with soy 25 with water (open the check valve 4), while the water from the hydraulic cavity 7 is pumped into the sleeve // and the pump / from the pressure of the air in the pneumatic cavity 9. When the pump passes water, it passes water both to the consumer and to the pneumohydraulic accumulator through the check valve 5, and compresses the air again to its working pressure. When the pump 1 stops the pressure in it, the reverse clan 5 is closed and the device is charged by the pump for the next start. The air in the pneumohydraulic accumulator 6, having squeezed out the water, does not come out through the reverse clanan 4 itself, since its pressure drops to atmospheric. The check valve 4, after opening and filling the suction hose dl and pump 1, closes, and the water pumped by pump 1 into the pneumohydraulic accumulator 6 does not flow out of the check valve 4, since the pressure at the inlet of pump 1 is less than at the outlet. In order to first fill the suction hose 11, and then the pump /, the latrubka 2 is directed toward the nozzle 3. Such a device does not require the vacuum density of the suction hose connections, eliminates the need for a vacuum pump, reduces the filling time of the centrifugal pump. Claims An apparatus for filling a centrifugal pump, comprising a tank with non-pumpable liquid, connected to the inlet and outlet of the pump by nozzles with non-return valves, characterized in that, in order to speed up the filling process, the tank is made in the form of a pneumohydraulic accumulator. Sources of information taken into account during the examination: 1 USSR author's certificate on application No. 2678098 / 25-06, cl. F 04 D 9/00, 1978.

2. USSR author's certificate .N0 261182, cl. F 04 D 9/00, 1969.