SU1742530A1 - Multiflow divider-integrator of fluid flows - Google Patents

Abstract

The invention relates to hydraulic engineering. The multi-stream divider-adder of flows has a housing with channels for supplying and discharging working fluid. In the bore of the housing there are at least two moving elements with grooves installed with the formation of inlet and outlet cavities installed with the possibility of forming variable chokes with the walls of the housing and between their ends. The constant chokes are located in front of the variables. In order to expand the functionality of the divider-adder by performing a summation of the flows, the movable elements are connected to the housing through membranes forming cavities. The constant chokes are made in the form of Venturi tubes, installed in the housing, their inputs are connected to the supply channel, the outlets are connected to the input cavities, and the throats are connected to the corresponding control cavities. 1 sludge ate with

Description

The invention relates to hydraulic machine building and can be used in hydraulic drives of mobile machines.

The purpose of the invention is to enhance the functionality by performing the summation of the flows.

The drawing shows the divider-adder flows, the overall appearance.

Multithread divider-adder flows includes a housing 1 with a channel 2 supply and channels 3-5 drain the working fluid in the bore 6 of which is placed with the formation of the input cavities 7-9 and output cavities 10-12 at least two movable elements 13 and 14 with grooves 15-17, installed with the possibility of forming variable chokes 18-20 between their ends and with the walls of the housing 1. The movable elements 13 and 14 are connected to the housing 1 through the membranes 21 and 22,

forming cavities 23-26 of control, fixed chokes are made in the form of Venturi tubes, installed in front of variable throttles in housing 1, their inputs 27-29 communicate with the inlet channel 2, outputs 30-32 with input cavities 7-9, and throats 33-35 — with corresponding control cavities 23–26.

Divider-adder flows works as follows.

In the flow dividing mode, the working fluid is supplied through the supply channel 2 and constant chokes to the Venturi Venturi tubes into the inlet cavities 7-9 and then through the grooves 15-17 of the moving elements 13 and 14, variable chokes 18-20 are fed into the output cavities 10-12 and through channels 3-5 of the outlet to the hydraulic engines. A portion of the working fluid from the necks of the 33-35 Venturi tubes is fed into the control cavities 23-26. With

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that the loads on the hydraulic motors are equal, the flow rates in the branched flows, and consequently, through the throats 33-35 are equal, therefore the pressures in the control cavities 23-26 are equal. As a result, there is no pressure differential acting on the membranes 21 and 22, the movable elements 13 and 14 are in the middle position.

If the load on one of the hydraulic motors, for example, communicated with the discharge channel 3, increases, the flow in this branch and, consequently, through the corresponding Venturi pipe decreases, which leads to an increase in pressure in the throat of the Venturi 33, and therefore in the control chamber 23, and the movable element 13 under the action of pressure drop across the membrane 21 moves to the right, reducing the resistance of the variable throttle 18 and increasing the resistance of the variable throttle 19, which in turn causes a decrease in the flow through it and cutting the corresponding venturi tube, which leads to an increase in pressure in the neck 34 of the venturi tube and, consequently, in the control chambers 24 and 25, and the movable element 14 under the action of pressure difference on the membrane 22 moves to the right, increasing the resistance of the variable throttle 20, which causes in turn, a reduction in the flow through it and through the corresponding venturi, which leads to an increase in pressure in the throat 35 of the venturi and, consequently, the chamber

26 controls The described process occurs until the pressures in the control cavity 23-26 are equalized, which is possible only with equal costs in the branches x. If channel 2 is reported with a drain, then the device operates in the mode of flow accumulator similarly.

With an even number of hydraulic motors, the extreme moving elements are made with two grooves, and the middle moving element can be made without grooves.

Claims (1)

Claims. A multithreaded flow divider-adder, comprising a housing with channels for supplying and discharging working fluid, in the bore of which at least two moving elements with grooves are installed to form inlet and outlet cavities installed with the possibility of forming variable throttles between their ends and with the body sections, and constant chokes are set before the variables, characterized in that, in order to expanding the functionality by performing the summation of the flows, the movable elements are connected to the body through membranes, forming control cavities, the constant throttles are made in the form of Venturi tubes, installed in the case, their inputs are connected to the supply channel, the outlets are to the input cavities, and the throats with the corresponding control cavity, p gz m a283f2 p ai pzzzz j 218 IS If P 9 17 s