GB2379482A

GB2379482A - Hydraulic motor-generator

Info

Publication number: GB2379482A
Application number: GB0200888A
Authority: GB
Inventors: Alexander Orestovich Monfor; Philip Alexandrovich Monfor
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-15
Filing date: 2002-01-15
Publication date: 2003-03-12
Anticipated expiration: 2022-01-15
Also published as: GB0200888D0; GB2379482B

Abstract

A hydraulic motor - generator or dynamo comprises a stator 1 and an internal, elliptical, or similar shaped, rotor 2 which is in sealing contact with the stator at its apexes. The stator has a circular internal cross section and at least a pair of shutters or vanes 4 and 5 which slide inwardly towards the rotor axis. Magnets 7 are mounted to an internal surface of the rotor around a stationary core 3 with windings. Seals 9, 10, 11, 16 and 17 act at the points of contact between the rotor, stator and shutters. Hydraulic fluid entering chambers 19 causes the rotor and magnets to rotate about the core generating electricity.

Description

Hydraulic motor-generator The invention relates to a hydraulic motor-electric generator that is designed to convert potential energy stored in a fluid under pressure into electric energy It may use a head of river water, water from the main or other sources of fluid with a pressure differential.

The existing types of machines to convert potential energy of water into electric one are mainly water turbines that are very large devices located at hydroelectric stations.

The purpose of this invention is to make a compact hydraulic electricity generator that may be easily transported and installed anywhere where there is a source of water with a head Accordingly, this invention provides a hydraulic motor-generator comprising a body designed as a hollow disc of a rectangular or other peripheral cross section, a disc of elliptical of similar shape that rotates within the body with at least two points of the disc in a seal contact with the body, magnets located on inward surface of the disc, at least one pair of shutters which may travel within slots located at opposite sides of the body thus closing the space between the disc and the body, a core with windings that is stationary suspended in the center of the disc, a cover that fixes the core to the body, transversal and radial sealing sliding vanes and rings which seal gaps between the body, the disc and the shutters in the points of their contact.

Some distinguishable signs of the invention also achieve the purpose of the design.

The sealing sliding vanes of the shutters and the sealing sliding vanes of the disc are designed in a way that allows them to cross each other smoothly.

The shutters are mounted on rollers that ensure low friction between the shutters and the body A self-supporting lubrication system provides lubrication of all the sealing sliding vanes and rings The hydraulic motor-generator may be designed with the capability to operate as a compact electric water pump or hydraulic pump.

A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which: Figure 1 is a central longitudinal vertical cross section of the hydraulic motor-generator with the shutters in the most inward positions.

Figure 2 shows a transversal vertical cross section of the hydraulic motor-generator with the shutters in the most inward positions.

Figure 3 is an enlarged cross section of the shutter showing details of the sealing sliding vanes, rings and the lubrication system.

As shown in Fig. 1, the hydraulic motor-generator has the body 1 with the shape of a round hollow disc of rectangular cross section having two slots located opposite to accommodate the shutter 4 and the shutter 5. A working fluid may enter the body 1 through two of the fluid under pressure inputs 21 and leave the body 1 through two of the fluid without pressure outputs 22 provided with the one-way valves 8. Inside the body 1 the disc 2 is located having an elliptic or similar shape with its cross section similar to that of the body 1. The disc 2 may rotate inside the

body 1 with its two most outward points being in continuous seal contact with the body 1 and with the shutter 4 and the shutter 5 being in continuous seal contact with the disc 2. The disc 2 sits on the bearing shown on other figures. These seal contacts are secured by two of the transversal sealing sliding vanes 10, by four of the radial sealing sliding vanes 11, by two of the transversal sealing sliding vanes of the shutter 17 and other sealing sliding vanes shown on other figures. Continuous seal contact of the disc 2 with the internal side surfaces of the body 1 is secured by two of the sealing sliding rings 9 located on the both sides of the disc 2. The permanent magnets 7 are mounted on inner surface of the disc 2 in such a way that they generate necessary magnetic flux density. (To increase and regulate an output power of the hydraulic motor-generator the permanent magnets 7 can be replaced with field windings connected to an external source of current through insulated copper rings and carbon brushes or with an exciting generator mounted on the body 1). The core 3 with current generating windings is stationary mounted inside the disc 2 with a minimal gap in between.

Fig. 2 depicts location of the transversal sealing sliding vanes 10, the radial sealing sliding vanes 11 and the sealing sliding rings 9. The disc 2 with the permanent magnets 7 is supported by the bearings 12 mounted in the body 1. Two of the covers 15 fastened to the left side and the right side of the body I provide support for the core 3 that is stationary. The fastening bolts 14 fix the two halves of the body 1 together and fasten other details Detailed view of shutter and sealing sliding vanes arrangements is presented in Fig 3 that shows horizontal cross section B-B (see Fig. 1) but at the moment when the long axis of the disc 2 is horizontal and crosses the plane of the shutters (while in Fig. 1 this axis is vertical). At this moment all the sealing sliding vanes are in the same plane and can be easily depicted. The shutter 4 is kept in continuous seal contact with the disc 2 by shutter springs 6. As the shutters operate in closed slots, the pressure equalizing channels 26 are provided to even up pressures on the both sides of the shutter while it travels up and down. The rollers 16 ensure easy displacement of the shutter 4 within the body 1. (The same rollers arrangements apply to the rollers 16 depicted in Fig. 1 and Fig. 2). The transversal sealing sliding vane of the shutter 17 is

located in a slot of the shutter 4 and is loaded with a spring to secure a good seal contact with its 't L L % 4 1 % A counterpart (at this time-with the transversal sealing sliding vane 10 of the disc 2. ) The sealing sliding vane 10 of the disc 2 is designed to withstand excessive centrifugal force that may develop with rotation of the disc 2. A detailed cross section C-C of the sealing sliding vanes is presented in the bottom right corner. The radial sealing sliding vane of the shutter 18 is located in a slot of the shutter 4 and is loaded with a spring to secure a good seal contact with its counterpart (at this time-with the radial sealing sliding vane 11 of the disc 2). A detailed cross section D-D of these vanes in their contact is presented in the bottom right corner The radial sealing sliding vane 18 may travel up and down inside the shutter 4 with rotation of the disc 2 and is loaded with another spring to keep it in continuous contact with the sealing sliding ring 9.

The sealing sliding ring 9 closes the gap between the outer side surface of the disc 2 and the inner side surface of the body 1. All the sealing sliding vanes, the sealing sliding rings and the rollers 16 are interconnected by lubrication channels 25 which provide through flow of lubrication oil from the point it enters (the lubrication oil input 23) till the point it leaves (the lubrication oil output 24). The lubrication oil input 23 and the lubrication oil output 24 are fitted with one-way valves and telescopic tubes to insure one way flow of the lubrication oil with reciprocal movements of the shutter 4.

The hydraulic motor-generator works in the following way.

A fluid having some pressure (e. g. water from the main or water from river up-stream) is fed to the fluid under pressure inputs 21 (see Fig. 1). As the pressure within the space 19 between the body 1 and the disc 2 is higher then within the space 20, an anticlockwise torque is applied to the

disc 2. The torque is equal to the area of the shutter 5 exposed to the pressure, multiplied by 2, multiplied by the pressure differential between spaces 19 and 20 and multiplied by the distance between the central point of the above area and the vertical axis of the hydraulic motorgenerator. The disc 2 starts rotating anticlockwise. As soon as the transversal sealing sliding vanes 10 reach the position of the fluid without pressure outputs 22, the pressure is equalized across the disc 2 and some amount of the fluid under pressure leaves the body 1 through the fluid without pressure outputs 22 for a short period of time. In the next moment other of the transversal sealing sliding vanes 10 closes the fluid under pressure input 21 and with further anticlockwise rotation of the disc 2 the fluid that is now without pressure is pushed out through the fluid without pressure outputs 22. This cycle repeats twice in the top and the bottom halves of the body 1 during one full rotation thus there are 4 working strokes and 4 exhaust strokes per rotation.

With different shape of the disc 2, different numbers of the shutters 4 and 5, different numbers of the fluid under pressure inputs 21, different numbers of the fluid without pressure outputs 22 and different numbers of the sealing sliding vanes 10 and 11, number of strokes per rotation may be different.

Power of the hydraulic motor-generator is equal to the torque multiplied by RPM.

Rotation of the permanent magnets 7 fixed to the disc 2 creates a rotating magnetic field that crosses the windings of the core 3 that is stationary thus generating an electric current in the core 3.

The hydraulic motor-generator may be designed with capability to operate as a compact electric water pump or hydraulic pump. In this case a three-phase voltage is applied to the windings of the core 3 so it generates a rotating magnetic field. Interaction of that magnetic field with the permanent magnets 7 forces the disc 2 to rotate. With the forced rotation in anticlockwise direction, the disc 2 will suck a fluid through the fluid under pressure inputs 21 and pump it out through the fluid without pressure outputs 22.

Claims

CLAIM Hydraulic motor-generator comprising a body designed as a hollow disc of a rectangular or other peripheral cross section, a disc of elliptical or similar shape that rotates within the body with at least two points of the disc in a seal contact with the body, magnets located on inward surface of the disc, at least one pair of shutters which may travel within slots located at opposite sides of the body thus closing the space between the disc and the body, a stationary core with windings that is suspended to the body in the center of the disc, covers that fix the core to the body, transversal and radial sealing sliding vanes and rings which seal gaps between the body, the disc and the shutters in the points of their contact.