SU870946A1

SU870946A1 - Rotational liquid meter

Info

Publication number: SU870946A1
Application number: SU792859434A
Authority: SU
Inventors: Азиз Шахрийяр Оглы Киясбейли; Эльхан Махмуд Оглы Гаджиев; Юрий Григорьевич Карагичев; Николай Айропетович Асатуров; Борис Арутюнович Минасян
Priority date: 1979-12-26
Filing date: 1979-12-26
Publication date: 1981-10-07

Description

Изобретение относится к области приборостроения, а именно к устройствам, предназначенным для измерения количества жидкостей, протекающих по трубопроводу.The invention relates to the field of instrumentation, and in particular to devices designed to measure the amount of liquids flowing through a pipeline.

Известен лопастный счетчик жидкости, содержащий барабан с выдвижными лопастями, управляемыми кулачковым механизмом £1 ].Known paddle fluid meter containing a drum with retractable blades controlled by a cam mechanism £ 1].

Наиболее близким к изобретению по технической сущности и достигаемому результату является ротационный счетчик жидкости, содержащий корпус, ротор с четырьмя пазами с расположенными в них подвижными рабочими органами, счетный механизм £2].Closest to the invention in technical essence and the achieved result is a rotary fluid meter containing a housing, a rotor with four slots with movable working bodies located in them, a counting mechanism £ 2].

Недостатком такого устройства является то, что трение скольжения при перемещении рабочих органов в пазах ротора в значительной мере ограничивает скорость их, повышает перепад давления, что. приводит к увеличению неучтенных протечек жидкости через зазоры, т.е. к понижению точности измерения и срока службы прибора.The disadvantage of this device is that sliding friction when moving the working bodies in the grooves of the rotor greatly limits their speed, increases the pressure drop, which. leads to an increase in unaccounted for fluid leaks through gaps, i.e. to reduce the accuracy of measurement and the life of the device.

Целью изобретения является повышение точности, надежности и уменьшение потери напора.The aim of the invention is to improve the accuracy, reliability and reduce pressure loss.

Цель достигается тем, что пазы ротора выполнены цилиндрическими в радиальном направлении, подвижные рабочие органы выполнены в виде шаров, а в нижней части корпуса выйолт нен желоб, радиус которого равен радиусу шара.The goal is achieved in that the rotor grooves are made cylindrical in the radial direction, the movable working bodies are made in the form of balls, and in the lower part of the body there is no groove whose radius is equal to the radius of the ball.

На фиг.1 изображен ротационный счетчик жидкости в разрезе; на фиг. 2· сечение А-А на фиг.1.In Fig.1 shows a rotational fluid meter in the context; in FIG. 2 · section AA in figure 1.

Роторный счетчик жидкости состоит из корпуса 1 и счетного механизма 2. Ось .вращения ротора 3 расположена эксцентрично по отношению к корпусу. В радиальных цилиндрических пазах 4 ротора, имеющего каналы 5, расположены шары 6. Корпус имеет изогнутый по радиусу желоб 7 и уплотняющую поверхность 8. Отверстия 9 и 10 служат соответственно для входа и выхода жидкости в камеру.The rotary fluid meter consists of a housing 1 and a counting mechanism 2. The axis of rotation of the rotor 3 is eccentric with respect to the housing. In the radial cylindrical grooves 4 of the rotor having channels 5, balls 6 are located. The housing has a radially curved groove 7 and a sealing surface 8. The holes 9 and 10 respectively serve for the entry and exit of fluid into the chamber.

Устройство работает следующим образом.The device operates as follows.

Так как ось вращения ротора 3 расположена эксцентрично по отношению к корпусу 1, разность давления жидкости действует только на один из шаров 6, находящийся на желобе 7 при произвольном угле поворота ротора, вызывая его вращение. За один оборот ротора через измерительную камеру пройдет определенной количество жидкости, пропорциональное объему, запираемому в желобе шарами, плюс объем жидкости, вытесняемой шарами из цилиндрических пазов ротора через каналы 5.Since the axis of rotation of the rotor 3 is eccentric with respect to the housing 1, the difference in fluid pressure acts only on one of the balls 6 located on the groove 7 at an arbitrary angle of rotation of the rotor, causing it to rotate. For one revolution of the rotor, a certain amount of liquid will pass through the measuring chamber, proportional to the volume locked in the groove by the balls, plus the volume of liquid displaced by the balls from the cylindrical grooves of the rotor through the channels 5.

Наличие рабочих органов, выполненных в виде шаров, и изогнутого по радиусу желоба обеспечивает трение качения, быстроходность, легкоходностъ, а следовательно, и широкий диапазон измерения при высокой точности. Трение качения одновременно уменьшает период давления на входе и выходе жидкости в счетчик. Шаровые рабочие органы и изогнутый по радиусу желоб корпуса значительно уменьшают периметры зазоров, а следовательно, протечки жидкости, что также улучшает точность, счетчика. Пазы ротора, выполненные цилиндрическими в радиальном направлении, исключают возможность защемления жидкости. Шаровые рабочие органы, перемещающиеся в пазах ротора, исключают заклинива5 ние ротора от случайных механических примесей в жидкости, что повышает надежность прибора.The presence of working bodies, made in the form of balls, and a gutter bent along the radius provides rolling friction, high-speed, easy-to-go, and, consequently, a wide measuring range with high accuracy. The rolling friction simultaneously reduces the pressure period at the inlet and outlet of the liquid in the meter. Spherical working bodies and a radially curved body chute significantly reduce the perimeters of gaps and, consequently, fluid leakage, which also improves the accuracy of the meter. The grooves of the rotor, made cylindrical in the radial direction, exclude the possibility of pinching fluid. Spherical working bodies moving in the grooves of the rotor exclude jamming of the rotor from accidental mechanical impurities in the liquid, which increases the reliability of the device.

Claims

The invention relates to the field of instrumentation, namely to devices for measuring the amount of fluids flowing through a pipeline. A blade fluid meter is known, containing a drum with retractable blades controlled by a cam mechanism Q. The closest to the invention to the technical essence and the achieved result is a rotary counter of the fluid, the contents of the body, the rotor with four grooves with movable working elements located in them, the counting mechanism 2. The disadvantage of such a device is that the sliding friction when moving the working bodies in the slots of the rotor significantly limits their speed, increases the pressure drop, which leads to an increase in unaccounted fluid leakage through the gaps, i.e. to lower measurement accuracy and device life. The aim of the invention is to improve accuracy, reliability and reduce pressure loss. The goal is achieved by the fact that the rotor grooves are cylindrical in the radial direction, the movable working bodies are made in the form of balls, and in the lower part of the body you have a groove whose radius is equal to the radius of the ball. 1 shows a rotational counter of the fluid in the section; Fig.2section aa in Fig.1. The rotary fluid meter consists of a housing 1 and a counting mechanism 2, the axis of rotation of the rotor 3 is located eccentrically with respect to the housing. In the radial tsdshdricheskie grooves 4 of the rotor having channels 5, balls 6 are located. The device works as follows. Since the axis of rotation of the rotor 3 is located eccentrically with respect to the housing 1, the differential pressure of the fluid acts only on one of the balls 6 located on the channel 7 at an arbitrary angle of rotation of the rotor, causing it to rotate. During one revolution of the rotor, a certain amount of liquid will pass through the measuring chamber, proportional to the volume locked in the channel by the balls, plus the volume of liquid displaced by the balls from the cylindrical grooves of the rotor through the channels 5. The presence of working bodies made in the form of balls provides rolling friction, fast speed, ease of running, and consequently, a wide measuring range with high accuracy. Rolling friction simultaneously reduces the period of pressure at the inlet and outlet of the fluid into the meter. Spherical working bodies and the body chute curved along the radius significantly reduce the perimeters of the gaps and, consequently, fluid leakage, which also improves the accuracy of the meter. Rotor grooves made cylindrical & radial direction, the possibility of pinching fluid. Balls working in the rotor grooves prevent the rotor from seizing from accidental mechanical impurities in the liquid, which increases the reliability of the device. Claims of rotation the working bodies are made in the form of balls, and in the lower part of the body there is a groove, the radius of which is equal to the radius of the ball. Sources of information taken into account in the examination 1. USSR author's certificate number 178129, cl. G 01 F 15/06, 1964.

2. Pavlovsky A.N. Measurement of flow and quantity of liquids, gas and steam. M., Publishing House of the Committee of Standards, Measures and Measuring Instruments under the Council of Ministers of the USSR, 1967, fig.48, p.84 (prototype).