SU1463951A1 - Piston group of hydraulic machine - Google Patents

Abstract

The invention allows to increase the reliability and volumetric efficiency of a hydraulic machine. The spherical head 2 of the hollow plunger 1 has an axial channel (K) 3. On the head 2 a boot 4 is hingedly mounted with a spherical counter surface and a hydrostatic support, w 1 complete in the form of chamber 6. Chamber 6 is equipped with a throttle controller communicating with K 3. -regulator is made in the form of a vortex chamber 7 with tangential and axial K 8, 9. K 9 communicates with chamber 7, K 8 with short-circuit. At the periphery of chamber 7, radial and tangential K I1 are made with the possibility of their communication with K 3. At the same time, radial flow reduces the effect of vortex flow. 2 hp f-ly, 3 ill. WITH

Description

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The invention relates to volumetric hydraulic machines, namely to axial-piston hydraulic machines with freely supported pistons.

The purpose of the invention is the demonstration of reliability and bulk K11D.

FIG. depicts a piston group with a throttle regulator in the form of a vortex chamber with axial and tangential channels; in fig. 2 shows an embodiment of a norn group with an additional tangential channel on the periphery of the vortex chamber; figure 3 is the same, with a radial additional channel.

The piston group of the axial-plunger hydraulic machine consists of a plunger 1 with a spherical head 2, having an axial channel 3, on which a hydrostatic shoe 4 is installed, which interacts with a support washer 5. A central working chamber 6 is made on the supporting surface of the shoe. In the body of the shoe 4, a vortex chamber 7 is made with an axial 8 and a tangential 9 channels. The spherical head 2 is cut 10, which, when the plunger 1 is rotated, makes it possible for the axial channel 3 to communicate with the additional channel 1.

 Porshneva. Group works as follows.

During the operation of the hydraulic machine, the working fluid from the axial channel 3 through the tangential orifice 9 enters the vortex chamber 7, forms a twisted flow, and through the axial channel 8 enters the working chamber 6. The flow through the hydrostatic support is determined by the value of the centrifugal backpressure in the chamber 7, the flow of fluid from the tangential channel. At the same time, the flow rate of the fluid into the hydrostatic support is two to three times less than in the known device due to the additional centrifugal counterpressure of the leaking fluid through

vortex chamber 7, thus

The implementation of the throttle controller in the form of a vortex chamber 7 with an axial 8 and a tangential 9 channels, communicating the working chamber 6 with the axial channel 3, reduces leakage through the hydrostatic support, thereby increasing the volumetric efficiency of the hydraulic machine.

At large tilt angles of the plunger, it is necessary to level the flow of the fluid.

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bones in an axle support. This is achieved by the fact that at the periphery of the vortex chamber 7 there is additionally at least one channel 1 1 with airflow (communication with the axial channel 3, and this channel can be performed both tangentially vortex, roar chamber 7, and radially. When channel 11 is tangential in one direction with channel 9, the plunger rotates, an increase in the minimum flow area of the throttle regulator is achieved with a corresponding increase in pressure in the working chamber 6. In the case of channel 11, tangential in the direction of When channel tilts and the axial cable 3 communicates with channel 11, channel 9 does not simply increase the flow area of the channels.Two oppositely directed tangential flows are added, the vortex flow stops, and therefore, the centrifugal counter pressure in chamber 7 disappears. This leads to a sharp decrease in flow resistance throttle controller and, consequently, to an increase in pressure in the working chamber 6, which ensures reliable operation of the shoe at elevated axial loads.

When channels 11 radially vortex chamber 7 is executed, the decrease in the hydraulic resistance of the throttle controller when the plunger rotates gradually occurs, since the radial flow reduces the effect of the vortex flow formed by channel 9. The additional channels 11 of the vortex frame 7 can be implemented and in various combinations with alternate communication with the axial channel 3, depending on the angle of inclination of the plunger and the required pressure change in the working chamber 6.

Claims (3)

1. A hydraulic machine piston group containing a hollow plunger with a spherical head having an axial channel on which a shoe is hingedly mounted with a spherical counter surface and with a hydrostatic support made in the form of a chamber communicated with an axial channel throttle regulator that differs CHTS1, with hollow platform and volumetric efficiency, e |) 1) sel-regutg torus in the form of a vortex chamber with tangential and axial channels, and the channel is connected with the chamber, and the tangential channel with the axial channel is spherical g dexterous plunger. 2. Piston group according to claim 1, characterized in that at the periphery of the vortex chamber hmpmp.io is filled with a gas meter at least one) diad.n1, o) a canap with the possibility of its connection with the axial channel of the spherical plunger head. 3. A piston group according to claim 1, characterized in that, in the periphery of the vortex chamber, at least one tangential channel is additionally made with the possibility of its communication with the axial channel of the spherical plunger head. 1 Compiled by I. Ilyin Editor E. Papp Tehred A. Kravchuk Proofreader V. Romanenko Order 808/41 Circulation 520 VNII11I of the State Committee for Inventions and Discoveries at the First AMG of the USSR 113035, Moscow, F-E5, 4/5 Raushsk nab. f f Y / / / / Fi.e  Subscription