Centrifugal jet impeller

 

(57) Abstract:

Centrifugal jet impeller can be used in devices large displacement, in particular in centrifugal pumps for pumping fluid in a turbine installations. The wheel contains two disks between which is rigidly fixed to the annular band performed it closed drainage channels. The wheel is mounted on the shaft and has a Central hole for the entrance of the working fluid. The inner surface of the belt is formed cavity. Idler channels are located on an axial component that is perpendicular to the radius of the wheel, and targeted outputs in the direction opposite to the direction of rotation of the wheel. Most remote from the center of the wheel forming a channel is tangent to the inner circumference of the ring belt having a height equal to the diameter of the outlet channel, and the width of the two diameters of the outlet channel, and the radius of the free cavity wheels are made equal to not less than two diameters of the inlet for the working fluid. The use of the invention allows to reduce mechanical friction losses and increase the efficiency of the wheel. 2 Il.

The invention relates to hydromelioration and may hidcote and turbine installations.

Known Segner wheel (Great Soviet encyclopedia, T. 23, S. 162, 1976), composed of vertical pipes, which strengthened the freely rotating horizontal pipe with the same horizontal bent in the opposite side ends.

The disadvantage of this design is the high frictional resistance of the air, which reduces the efficiency of the device close to zero.

The closest technical solution to the claimed invention is a reactive centrifugal impeller according to the author's certificate of the USSR N 1479705, MKI F 04 D 29/24, 29/22, 1989, containing the hub, a driving disk, is made on the periphery with annular flanges having inclined channels, the clutch disc is pressed into the annular belt, and between the master and the slave drives are blades, forming interscapular channels, communicating with the inclined channels of the ring belt.

However, the large diameter of the entrance and the resulting decrease in effective radius of the impeller, and the presence of overlapping input cavity blades intercept the radial flow of fluid intake, increases energy expenditure and, consequently, to reduce the working pressure in the working mowing increase the efficiency of devices large displacement.

This objective is achieved in that the centrifugal jet the impeller containing two disks between which is rigidly fixed to the annular band performed it closed sloping drainage channels installed on the shaft and having in the Central part of the hole for the entrance of the working fluid, where the inner surface of the belt is formed cavity, idler channels are located on an axial component that is perpendicular to the radius of the wheel, and targeted outputs in the direction opposite to the direction of rotation of the wheel, and most remote from the center of the wheel forming a channel is tangent to the inner circumference of the ring belt having a height equal to the diameter of the outlet channel, and width equal to two diameters of the outlet channel, and the radius of the free cavity wheels are made equal to not less than two diameters of the inlet for the working fluid.

Comparative analysis of the prototype shows that the inventive device is characterized in that the discharge channels are located on an axial component that is perpendicular to the radius of the wheel, and targeted outputs in the direction opposite to the direction of rotation of the wheel, and most remote from anticato, equal to the diameter of the outlet channel, and a width equal to two diameters of the outlet channel, and the radius of the free cavity wheels are made equal to not less than two diameters of the inlet for the working fluid.

Thus, the proposed device complies with the criteria of the invention of "novelty."

The comparison of the proposed solutions with other technical solutions shows that this construction is reactive centrifugal impeller has significant differences from them, namely:

- the absence of blades, i.e. the creation of a free annular body rotation, causes radial movement of each part without the cost of energy to change their direction, which creates directly inside the working body (wheel) stable centrifugal field of high tension and work pressure, increasing the pressure in the discharge channels annular band located at an axial component that is perpendicular to the radius of the wheel, and oriented outputs in the direction opposite to the direction of rotation of the wheel, and most remote from the center of the wheel forming a channel is tangent to the inner circumference of the ring band, which is almost lossless transformed the all drainage channels in the annular band on the axial component, perpendicular to the radius of the wheel and in the direction opposite to the direction of rotation of the impeller, reduces mechanical and hydraulic losses during operation, increasing the efficiency of the system;

- free volume of the impeller, ending with drainage channels on the periphery, prevents slippage of the fluid relative to the wall of the working cavity.

The optimal width and height of the working band is determined empirically. The height of the annular band equal to the diameter of the outlet channel, determines the height of the peripheral part of the reactive centrifugal impeller, resulting in a decrease to the minimum mechanical loss by friction, and the width of the annular band, equal to two diameters of the outlet, ensures the formation of the guide channel, sustained by the axial component perpendicular to the radius of the impeller.

The radius of the free cavity of the impeller is not less than two diameters of the inlet for the working fluid supports the effective operation of the device, increasing with increase.

In Fig. 1 shows a reactive centrifugal impeller in the section, Fig. 2 - section a-A.

Centrifugal jet rabaa entry of the working fluid (Fig. 1), between which on the periphery of the fixed ring belt 4 (Fig. 2, 1) with drainage channels 5 (Fig. 2, 1), performed by the axial component perpendicular to the radius of the wheel, and most remote from the center of the wheel forming a channel is tangent to the inner circumference of the ring belt. This forms a hollow working cavity 6 (Fig. 1).

Centrifugal jet impeller operates as follows. Working the body through the inlet opening 3 (Fig. 1) fills the working cavity 6 (Fig. 1). During the rotation of the impeller working medium in the working cavity rotates with it, developing a maximum pressure corresponding to occur at a given speed of rotation, the centrifugal tension field and is pushed into the discharge channels 5 (Fig. 2) ring belt 4 (Fig. 2) directed in the opposite direction of rotation of the impeller.

Thus, the proposed solution allows you to increase the efficiency of the device 10 to 15%.

Centrifugal jet impeller comprising two disks between which is rigidly fixed to the annular band performed it closed sloping drainage channels installed on the shaft Savana cavity, characterized in that the discharge channels are located on an axial component that is perpendicular to the radius of the wheel, and targeted outputs in the direction opposite to the direction of rotation of the wheel, and most remote from the center of the wheel forming a channel is tangent to the inner circumference of the ring belt having a height equal to the diameter of the outlet channel, and a width equal to two diameters of the outlet channel, and the radius of the free cavity wheels are made equal to not less than two diameters of the inlet for the working fluid.

 

Same patents:

Pump for liquids // 2126102
The invention relates to liquid supply

The invention relates to a wheel and spiral casing for centrifugal slurry pump and centrifugal slurry pump containing the wheel and the spiral casing

The invention relates to the field of hydro and can be used in such a vane hydraulic machines, as centrifugal pumps and compressors, and fans

The invention relates to a pump engineering turn out and can be used in the oil and gas industry for the extraction of oil from stripper wells containing mechanical impurities

Centrifugal pump // 2097603
The invention relates to designs of centrifugal pumps for delivery of liquid, mostly aggressive environments

Centrifugal pump // 2059887
The invention relates to a pump engineering turn out, particularly to centrifugal pumps and can be used in the automotive industry, for example, glass cleaner hire a fluid supplied under pressure

The invention relates to a pump engineering turn out to

The invention relates to hydromelioration, in particular to pump engineering turn out to

The invention relates to a pump engineering turn out and can be used in the design of impellers of centrifugal pumps

The invention relates to hydromelioration and can be used in impellers of hydraulic machines

The invention relates to power engineering and can be used in the manufacture, Assembly, mainly large wheels radial-axial hydraulic machines

Hydromotor // 2091606
The invention relates to hydraulic engineering and can be used in the economy to produce mechanical or electrical energy

The invention relates to hydromelioration and can be used in radial-axial hydraulic machines

Wheel turbo drive // 2042043
The invention relates to the field of Turbomachinery, in particular to the turbodrill for drilling wells

The invention relates to hydro - and wind energy, in particular, to devices for energy extraction fluid for converting it, for example, in electricity

The invention relates to hydromelioration and can be used in impellers of hydraulic machines

FIELD: turbine engineering.

SUBSTANCE: blade system comprises blades whose inlet and outlet edges are made so that the working section of the inlet blade edge adjacent to the hub prevents against cavitation.

EFFECT: enhanced efficiency and reliability.

2 cl, 5 dwg

Hydraulic unit // 2325549

FIELD: engines and pumps.

SUBSTANCE: hydraulic unit contains hydro generator, working blades rotating around a horizontal axis and having a shape formed with one parabola or with a cross of two parabolas, and a shaft running inside a bar to transfer a torque to the generator. The unit is equipped with a hollow drum with supports providing its floatation ability, and with a rotary table whereon the hydro generator is assembled. Also the hydro generator has inertial wheels with massive rims secured to both sides of the drum, and the second bar. The working blades are fastened flexibly with loops to the drum and pressed to the supports by flat springs. The shaft is made flexible and runs through both rods by means of which the axis of the unit is held and directed.

EFFECT: increased efficiency of a hydro unit.

1 dwg

Up!