SU1432271A1 - Pump - Google Patents

Abstract

The invention allows to increase the efficiency and pressure of the vane and vortex pumps. A closed wheel 3 with blades 4, forming inter-blade channels, is installed in the housing 1 with a spiral diversion chamber 2. The cross-section of the channels has the shape of an ellipse of constant area. The peripheral part 6 of the wheel 3 is made in a semicircular shape and is provided in the inter-channel areas with symmetrically arranged radial grooves 8 with a bottom of the semicircular shape in the circumferential and radial directions. The spiral chamber 2 in cross section has the shape of a zllipse. The radius of part 6 is half the wheel width at the periphery. The area of chamber 2 in the light is equal to the cross-sectional area of the channel, which allows the flow of fluids without additional resistance and forcing the flow to be influenced by the vortex zones. 1 hp f-ly, 5 ill. SL

Description

The invention relates to pump construction, namely to the designs of vane and vortex tip pumps.

The purpose of the invention is to increase the efficiency and pressure of the pump.

Figo 1 shows the n. Pump, a cross-section in Fig 2 - section A-A in FIG. 1; in fig 3; node I in fig „1 | FIG. 4 is a section BB in FIG. 2; in fig. 5 shows a section B-B in FIG. four,

The pump includes a housing 1 with a spiral diverter chamber 2 and a closed wheel 3 mounted therein with blades 4, forming interloop channels 5 o

The inter-blade channels 5 are made with an elliptical cross-section of constant area, while the periphery part 6 of the wheel 3H is made in a semicircular shape and provided in the inter-channel areas 7 with symmetrically arranged radial grooves 8 with the bottom 9 of the semicircular shape B-circumferential and radial The spiral chamber 2 in cross section has the shape of an ellipse, large RC and small, the radii of which are equal to Rc B / 5/2 and Tj. B / 4p where B is the width of the wheel 3 on the periphery. The radius R of the semicircular peripheral part 6 of the wheel 3 is equal to half the diameter B of the wheel on the periphery of the radusa; moreover, the number n of the grooves 8 is equal to the nearest integer number and the value of j determined by reference to

P

2 (R - f) - B-Z. „,.

where R is the radius of the impeller 3;

Z is the number of inter-channel regions.

Tay 1 a

The pump works as follows. The working medium enters the impeller 3 and / passes through the channels 5, under the action of centrifugal force goes to the periphery of the impeller 3 into the cavity of the chamber 2 of the housing 15 Next, the working medium under the action of the grooves B, which form the additional lobster, receives an additional kinetic energy increment. rHHj, causing an increase in the pressure of the working medium and through the pressure pipe goes into the highway.

Q

five

0 5 o

five

0

five

0 5

To optimize the dimensions of the grooves of the zones of vortex formation, an experiment was performed in which the radius rn was changed. In this case, the ratio Gd / V takes a value of 0.1-1.0. When the ratio of g / V changes, there is a zone in which the function () has an extremum in the range of 0.15 to 0.28, which corresponds to the coincidence of the twist of flow in the channel and in the zones of eddy formation.

The implementation of chamber 2 with an ellipse section with radii Rt B / 5/2 and Gs B / 4 provides an area of camera 2 in the light, equal to the cross-sectional area of the inter-blade channel 5, which allows fluid flow without additional resistance and forms a flow to act on it eddy formation, which increases efficiency. The number n of the grooves 8 is selected from the condition of the maximum increment of the head due to the effect on the flow at the outlet of the wheel 3 by radial grooves 8,

Claims (1)

1. A pump comprising a housing with a spiral side chamber and an enclosed wheel mounted therein with blades forming interloop channels, characterized in that, with an efficiency and pressure circuit of the pump, the inter-blade channels are made with an ellipse cross-section of constant area , while the peripheral part of the wheel is made of a semicircular shape and is provided in the inter-channel areas with symmetrically arranged radial grooves with a bottom of a semicircular shape in a circle and the radial direction, with the spiral chamber in the section has the shape of an ellipse, large R and small T; -, the radii of which are equal to Ds VU5 / 2 and g, B / 4, where B is the width of the wheel at the periphery, 2, Pump pop, 1, which is distinguished by the fact that the radius of the semicircular peripheral part of the wheel is half the width B of the wheel at the periphery, and the radii of the semicircular bottom of the radial grooves in the circumferential and radial directions are equal to r (0.15-0.28) B and B / 2, and the number of grooves n is equal to the nearest integer number and the value determined by the ratio n 2iT (R - p - B-Z 14322714 where R is the radius of the impeller; Z is the number of interchannel regions. Black /, cop 2 Rig.d V 9 figl