SU731146A1 - Multistage hydrodynamic converter - Google Patents

Description

DESCRIPTION

Inventions

TO AUTHOR'S CERTIFICATE

Union of Soviet

Socialist

Republic> 731146

State Committee

USSR for Inventions and Discoveries (61) Additional to author. certificate-wu - (22) Announced 04.08.78 (21) 2656595 / 25-06 with the connection of application No. - (23) Priority - (43) Published on April 30.80. Bulletin No. 16 (45) Date of publication of the description 30.04.80 (51) M.Kl. ² F 16 N 41/16 (53) UDC 621-226.5 (088.8)

(72) Authors inventions L. V. Grigorenko and V. D. Demchenko (71) Applicant Volgograd Polytechnic Institute

(54) MULTI-STAGE HYDRODYNAMIC TRANSFORMER

The invention relates to the field of power engineering and can be used in the transmission of self-propelled wheeled and tracked traction and transport vehicles. ⁵

Known multi-stage hydrodynamic transformer containing turbine and reactor stages connected respectively to the output and reactor shafts, and a pump wheel [1]. ¹⁰

The disadvantage of such torque converters is a large range of changes in the curvature of the profile of the blades; the vanes of the last turbine and reactor stages are not regulated, that is, they are not mobile.

This creates significant hydraulic shock losses with a tangential flow inlet to the blades, complicates the design of the wheel blades, and reduces efficiency. 20

The aim of the invention is to expand the zone of high efficiency and simplify the design.

The goal is achieved by the fact that each stage consists of two 25 impeller wheels, the first of which is connected to the shaft along the flow by means of a free-wheeling mechanism, and the second is rigidly fixed to it, with the blades of the second wheels of the turbine and reactor stages located ³⁰ in front of the pump wheel, made swivel.

The drawing shows a diagram of a multi-stage d and in a mi 14 e transformer.

A mnogo start hydropod transformer contains turbine and reactor stages connected respectively to output 1 and reactor 2 shafts, and a pump wheel 3. Turbine stages include wheels 4–7, and reactor stages include 8-11 wheels. The wheels 4 and 6 of the turbine stages and the wheels 8 and 10 of the reactor stages are connected to the shafts 1 and 2 via the freewheel mechanism 12, and the wheels 5, 7, 9 and I are rigidly fixed to the shafts 1 and 2, and the blades of the wheels 7 and 11 are made rotary .

Torque Converter operates as follows.

With a minimum gear ratio (ί _τ = - 0.05-0.15), the wheel blades. 4 and 6 turbine stages convert the hydraulic energy of the flow into the mechanical energy of rotation of the shaft 1 of the turbine; moreover, the wheels 4 and 6 are stationary.

The blades of the wheels 8 and 10 of the reactor stages are also stationary and change the direction of fluid flow.

As the gear ratio / _t increases _{, the} fluid flow acts on the idle surfaces of the blades of the wheels 4, 6, 8, 10. Thanks to the free-wheeling mechanism 1'2, the wheels 4, 8 begin to rotate freely in the stream without changing its parameters, and provide unstressed flow inlet to the second wheels 5, 7, 9, 11 of the turbine and reactor.

The connection of the second wheels 5, 7, 9, 11 of the penalties of the turbine and the reactor with the corresponding shafts 1 and 2 rigidly ensures the work of converting the flow energy into mechanical energy in all operating modes of the torque converter. ⁱ⁵

Forced rotation of the blades of the wheels 7, 11 of the last stage changes the direction of flow and reduces shock losses. At the entrance to the next wheel in the appropriate modes. 20

If during operation the load on the driven shaft 1 increases (the gear ratio / _t decreases), then the direction of the flow inlet to the turbine and reactor wheels changes, and they become jammed due to the free-wheeling mechanism.

The wheels of turbines and reactors are switched from one mode to another automatically.

Claims (1)

Claim The main hydraulic fluid dynamics transformer containing turbine and reactor stages connected respectively to the output and reactor shafts, and a pump wheel, characterized in that, for the purpose of expanding the zone of high efficiency and simplifying the design, each stage consists of two impeller wheels, the first of which is connected upstream with the shaft via a freewheel, and the second is rigidly fixed to it, with the blades of the second wheels of the turbine and reactor stages located in front of the pump wheel in full swing. Source of information taken into account during the examination: 1. US patent No. 2762197, CL. 60-54. 1956.