SU889896A1

SU889896A1 - Immersible pumping unit

Info

Publication number: SU889896A1
Application number: SU802889042A
Authority: SU
Inventors: Давид Израилович Вербицкий
Original assignee: Специальное Конструкторско-Технологическое Бюро Герметичных И Скважинных Насосов
Priority date: 1980-03-04
Filing date: 1980-03-04
Publication date: 1981-12-15

Description

1one

Изобретение относитс к гидромашиностроению , более конкретно к погружным насосным установкам, снабженным дозатором дл реагента.The invention relates to hydraulic engineering, more specifically to submersible pumping units equipped with a reagent dispenser.

Известна погружна насосна установка, содержаща насос, дозатор реагента с ёмкостью и линией подачи и золотник l.A well-known submersible pump installation comprising a pump, a reagent dispenser with a capacity and supply line and a spool l.

Недостаток этой конструкции состоит в низкой эффективности действи дозатора .The disadvantage of this design is the low efficiency of the dispenser.

Известна также погружна насосна установка, содержаща центробежный насос, водозаполненньй электродвигатель и дозатор реагента с емкостью и линией подачи, в которой установлен предохранительный золотник, один из управл ющих каналов которого подключен к зоне нагнетани насоса 2.Also known is a submersible pump unit comprising a centrifugal pump, a water-filled electric motor and a reagent dispenser with a tank and a supply line in which a safety valve is installed, one of the control channels of which is connected to the discharge zone of the pump 2.

Недостатками такой установки вл ютс большой расход реагента и повышенные ее габариты при использовании в качестве реагента раствора полимера или поверхностно-активного вещества, обеспечивающих эффект Томса.The disadvantages of this setup are the high consumption of the reagent and its increased dimensions when using as a reagent a solution of a polymer or surfactant that provides the Toms effect.

Цель изобретени - снижение расхода реагента и уменьшение габаритов установки при использовании в качестве реагента раствора полимера или поверхностно-активного вещества, обеспечивающих эффект Томса.The purpose of the invention is to reduce the consumption of reagent and reduce the size of the installation when using as a reagent a solution of a polymer or surfactant that provides the Toms effect.

Поставленна цель достигаетс тем, что в линии подачи реагента установлен дроссель и последн подключена к полости электродвигател , а второй управл ющий канал подключен к зоне всасывани насоса или к линии подачи реагента.The goal is achieved by the fact that a throttle is installed in the reagent supply line and the latter is connected to the motor cavity, and the second control channel is connected to the pump suction zone or to the reagent supply line.

На чертеже представлена схема погружной насосной установки.The drawing shows a diagram of the submersible pump installation.

Claims

The installation contains a centrifugal pump 1, a water-filled electric motor 2 and a reagent dispenser 3 with a capacity of 4 and a supply line 5 in which a safety valve 6 is installed, one of the control channels 7 of which is connected to the discharge zone of the pump 1. A choke 8 is installed in the supply line 5 of reagents and the latter is connected to the cavity 9 of the electric motor 2, and the second control channel 10 is connected to the suction zone of the pump 1 or to the supply line 5 of the reagent. The installation works as follows. The motor 2 drives the impeller of the centrifugal pump I, which pumps the liquid. During the operation of the electric motor 2, the safety valve 6 under the action of the pressure difference in the control channels 7 and 10 opens and the solution of the substrate or surfactant providing the Toms effect, i.e. reduction of friction losses in the liquid, enters the capacitor 4 through the choke 8 into the cavity 9 of the electric motor 2. As such a reagent can be used, for example, solutions of polyethylene oxide, polyacrylamide. The flow of polymer or surfactant from capacity 4 into cavity 9 occurs due to diffusion caused by the difference in the concentration of the said substance in them. The required rate of supply of reagent to cavity 9 is established by means of throttles 8, at such a level that it is necessary to compensate for the destruction of the reagent (destruction. When the motor 2 is turned off, the pressure difference in the control channels 7 and 10 becomes equal to zero and the safety valve 6 closes the reagent supply line 5. This reduces the consumption of the latter, .4. The use of a polymer or surfactant providing the Toms effect leads to an increase in the efficiency and useful power of the electric motor. Exhaust power motor with lower power and dimensions. Invention A submersible pumping installation comprising a centrifugal pump, a water filled motor and a reagent dispenser with a tank and supply line in which a safety spool is installed, one of the control channels of which is connected to the pump discharge zone. , differing from the fact that, in order to reduce the consumption of the reagent and reduce the size of the installation when using a polymer solution or a surface-active substance as a reagent va providing Toms effect, in the reagent supply line mounted throttle and the latter is connected to the motor cavity and a second control channel connected to the pump suction zone or reagent supply line. Sources of information taken into account during the examination 1. USSR author's certificate No. 444872, кп. E 21 B 43/00, 1971.

2. USSR author's certificate number 658313, cl. F04 D J3 / 10 // E 21 B 43/00, 1976.