SU985439A1

SU985439A1 - Pump station output control method

Info

Publication number: SU985439A1
Application number: SU813317301A
Authority: SU
Inventors: Шаген Саакович Донгарян; Асгат Галимьянович Гумеров; Петр Митрофанович Бондаренко; Рашит Зиннатович Ирмяков; Нина Закировна Аитова; Василий Харитонович Галюк; Сергей Петрович Лебедич
Original assignee: Всесоюзный Научно-Исследовательский Институт По Сбору,Подготовке И Транспорту Нефти И Нефтепродуктов
Priority date: 1981-08-21
Filing date: 1981-08-21
Publication date: 1982-12-30

Description

Изобретение относитс к насосостроёнию , в частности к способу ре-гулировани производительности насосной станции, и может быть использовдно при проектировании насосной . станции дл перекачивани в зких жидкостей на большие рассто ни .The invention relates to pumping, in particular to a method for controlling the performance of a pumping station, and can be used in designing a pumping station. stations for pumping viscous liquids over long distances.

Известен способ регулировани режима работы насосной станции путем изменени температуры перекачиваемой жидкости злектроподогревател ми tli.There is a known method of controlling the operating mode of a pumping station by varying the temperature of the pumped liquid using electric heaters tli.

Недостатками этого способа вл ютс сложность и высока стоимость его реализации.The disadvantages of this method are the complexity and high cost of its implementation.

Наиболее близким к предлагаемому по технической сущности вл етс способ регулировани производительности насосной станции путем измене-, ни числа работающих насосов по сигналу изменени в зкости перекачиваемой жидкости в трубопроводе, 21.The closest to the proposed technical entity is a method of controlling the performance of a pumping station by changing the number of operating pumps by a signal of a change in the viscosity of the pumped liquid in the pipeline, 21.

Недостаток этого способа состоит в низкой надежности, св занной с возможным повышением напора из-за изменени в зкости.The disadvantage of this method is the low reliability associated with a possible increase in pressure due to a change in viscosity.

Цель изобретени - повышение надежности .The purpose of the invention is to increase reliability.

Поставленна цель достигаетс тем, что, определ ют технологический параметр, характеризующий режимThe goal is achieved by determining the technological parameter characterizing the mode

/течени жидкости в трубопроводе, и по нему корректируют величину сигнала ./ fluid flow in the pipeline, and it is used to correct the signal magnitude.

На фиг 1 представлены кривые зависимости числа работаюоосх насосов от в зкости перекачиваемой жидкости; на фиг. 2 - блок-схема насосной станции, в которой реализуетс предлагаемый способ регулировани .Fig. 1 shows the curves of the number of working pumps on the viscosity of the pumped liquid; in fig. 2 is a block diagram of a pumping station in which the proposed control method is implemented.

Насосна станци содержит трубопровод 1с подкгаочеишлми к нему насосгши 2 - 5, датчик-преобразовательThe pumping station contains a pipeline 1c. The pumping system 2-5 below it, the sensor-converter

6в зкости и технологического параметра , характеризующего режим течени , операционный блок 7, задающий блок 8 и исполнительный блок 9.6 viscosity and technological parameter characterizing the flow regime, the operation unit 7, the driver unit 8 and the execution unit 9.

Способ регулировани производительности ос пцествл ют следующим образом. The performance control method is described as follows.

В операционнш блок 7 поступают значени коэффициента С из задающего блока 8 и значени в зкости и технологического параметра, характеризук цего режим течени (показател степени m ) . Операционный блокThe operational unit 7 receives the values of the coefficient C from the driver unit 8 and the values of viscosity and technological parameter, characterized by the flow regime (exponent m). Operating unit

Claims

7 reports to the executive unit 9 information about its operation, the number of pumps running at the same time, and the latter switches off the excess or turns on the missing pumps. In this case, the regulation of the performance of the pump station is made in accordance with the dependence obtained from the joint condition. work of the pipeline and pumping station where i is the number of working pumps; V is the viscosity of the pumped liquid; m is an exponent depending on the nature of the fluid movement; С - coefficient depending on р operating mode and geojet dimensions of the pipeline. The curves in FIG. 1 reflect the dependence of the number of operating pumps on various parameters of 5 liters of various pumping modes (A with underload, B - nominal, C with overloads). On the curves, there are made the approximating devices, which determine the value of the number of pumps required for operation in the turbulent mode (t 0.25) and the coefficient C 185 with a small margin less than the capacity of one pumped. To determine the required number of pumps, set the number of pumps is determined by the fluids and the closest to the intersection point with the corresponding abscissa ordinate. When conditions change (viscosity change, operation with a flow that differs from a positive one, etc., signals change) coming from block 8 and sensor.-converter 6, as. In this case, the operation unit 7 determines the number of pumps required in the conditions, and the execution unit 9 makes the appropriate on or off. The proposed method leads to an increase in the reliability of the pumping station, and the absence of unnecessary operating pumps provides increased efficiency and efficiency. Claims The method of controlling the performance of a pumping station by changing the number of pumps in operation by a signal changes the viscosity of the pumped liquid in the pipeline, which is so that, in order to increase reliability, the process parameter characterizing the flow of the liquid in the pipeline is determined and the value is adjusted signal. Sources of information taken into account during the examination 1. US patent 3,632,976, cl. 219-301, published. 1972.

2. USSR author's certificate for application 2815325 / 25-06, cl. F 04 F 15/00, 1979.