SU543791A1

SU543791A1 - Start-up hydrodynamic coupling

Info

Publication number: SU543791A1
Application number: SU1994790A
Authority: SU
Inventors: Аркадий Владимирович Крутик; Геннадий Павлович Стесин; Виктор Николаевич Яковлев; Александр Ефимович Гольдбухт; Лариса Максимовна Сергеева
Original assignee: Ордена Трудового Красного Знамени Институт Горного Дела Им.А.А. Скочинского
Priority date: 1974-02-08
Filing date: 1974-02-08
Publication date: 1977-01-25

Description

(54) ПУСКОВАЯ ГИДРОДИНАМИЧЕСКАЯ МУФТА(54) STARTING HYDRODYNAMIC COUPLING

1one

Изобретение относитс к области гидромашиностроени и может быть использовано в горнодобывающей, металлургической, химической и других отрасл х промышленности в приводах различных машин.The invention relates to the field of hydraulic engineering and can be used in the mining, metallurgical, chemical and other industries in drives of various machines.

Известны гидродинамические муфты, содержащие установленную на неподвижном коллекторе черпательную трубку, размешенную в пространстве между турбинным колесом и кожухом, сообщенным с насосным колесом, снабженным пусковой камерой, и устройство с подпружиненным золотником дл регулировани заполнени рабочей полости в зависимости от ускорени турбинного вала муфты 1 .Hydrodynamic couplings are known that contain a scoop tube mounted on a fixed collector placed in the space between the turbine wheel and the casing in communication with a pump wheel equipped with a starting chamber, and a device with a spring loaded spool for adjusting the filling of the working cavity depending on the acceleration of the turbine shaft of the coupling 1.

Однако эти гидродинамические муфты слоны по конструкции и нестабильны в регулировании .However, these hydrodynamic couplings are elephants in design and unstable in regulation.

Цель изобретени - повышение стабильности регулировани и упрощение конструкции муфты.The purpose of the invention is to increase the stability of regulation and simplify the design of the coupling.

Это достигаетс тем, что упом нутый подпружиненный золотник установлен на входе в пусковую камеру, а турбинное колесо снабжено промежуточной камерой, сообщенной со входом золотника и выходом черпательной трубки.This is achieved by the fact that said spring-loaded spool is installed at the entrance to the starting chamber, and the turbine wheel is provided with an intermediate chamber communicated with the entrance of the spool and the exit of the scooping tube.

Подпружиненный золотник вьшолнек в виде диска со сквозными отверсти ми, установленного на валу турбинного колеса с воз можностью относительного углового поворота при ускорении и взаимодействующего с торцовой поверхностью ступицы турбинного колеса, в которой выполнены отверсти , соо вдающиес с упом нутой промежуточной камерой .Spring-loaded spool in the form of a disk with through holes mounted on the shaft of the turbine wheel with the possibility of relative angular rotation during acceleration and interacting with the end surface of the hub of the turbine wheel, in which holes are made, which are connected with the said intermediate chamber.

На фиг, 1 изображена гидродинамическа муфта, разрез; на фиг. 2 - сечение А-А фиг. 1.Fig. 1 shows a hydrodynamic clutch, a section; in fig. 2 is a section A-A of FIG. one.

Claims

The start-up hydrodynamic clutch consists of a pump wheel 1, a turbine wheel 2, a casing 3, a starting chamber 4 communicating with the cavity of the pump wheel 1 orifices 5. In the space between the turbine wheel 2 and the casing 3 a scoop tube b is fixed on the fixed collector 7 s channels 8. In the turbine wheel 2, an intermediate chamber 9 is inserted into which a manifold 7 with channels 8 enters through the seal 10. The intermediate chamber 9 is provided with openings 11 for the passage of fluid into the starting chamber 4. At the entrance to the starting chamber 4 A spool 12 is installed, preloaded with springs 13. The spool 12 is placed on the shaft 14 of the turbo wheel 2. When the pump wheel 1 is accelerated, fluid is fed by a dredging tube 6 through the channels 8 of the collector 7 into the intermediate chamber 9. Through the holes 11, the cross section of which is automatically adjusted depending on the acceleration of the turbine shaft 14, the liquid enters the starting chamber 4, and then through the openings 5 into the cavity of the impeller 1. At certain values of the acceleration, the spool 12 rotates under the action of tangential inertia forces resistance of the springs 13, and changes the cross section of the holes 11, and consequently, the flow rate going into the starting chamber 4. The maximum acceleration corresponds to the maximum opening of the holes 11, at which the speed of emptying the working cavity of the hydraulic clutch is also maximum. Since the cross-sectional area of the openings 5 is smaller than that of the openings I, liquid starts to accumulate in the starting chamber 4 and the starting torque decreases. As the acceleration decreases, the cross section of the holes 11 decreases, and the volume of fluid in the working cavity increases, which leads to an increase in the moment. Thus, in the process of acceleration of the fluid coupling, the magnitude of the starting torque is maintained within certain limits, which ensure the specified acceleration of the turbine wheel. Upon completion of the start-up, the spool 12, under the action of the springs 13, closes the apertures 11 completely, which increases the filling of the working cavity to a maximum value. 1. Start-up hydrodynamic coupling containing a drip tube installed on a fixed collector placed in the space between the turbine wheel and the casing in communication with the pumping wheel equipped with a starting chamber, and a device with a spring-loaded slide valve for adjusting the fillings of the working cavity depending on the acceleration of the turbine shaft a coupling, characterized in that, in order to increase the stability of the regulation, said spring-loaded spool is installed at the entrance to the starting chamber, and binnoe wheel is provided with an intermediate chamber communicating with the inlet valve and the outlet tube cherpatelnoy.

2. The coupling according to claim 1, characterized in that, in order to simplify its design, the spring-loaded spool is complete in the form of a disk with through holes mounted on the shaft of the turbine wheel with the possibility of a relative angular rotation during acceleration and interacting with the end surface hubs of a turbine wheel in which holes are made communicating with said intermediate chamber. The source of information taken into account in the examination: 1. Copyright certificate CCXDPN2892286, cl. F16 D 33/10, 1973.

543791