ROTARY VANE HYDRAULIC ELEMENT

Abstract

A rotary vane hydraulic element, body of which, confining internal hydraulic space in the shape of toroid with the rotation axis X-X, is divided by plane (A-A), that crosses the space perpendicularly to the rotation axis (X-X) and in case of the space of circular toroid shape (torus)by plane (A-A) that crosses the space perpendicularly to the rotation axis (X-X) and the center point of the circle delimiting the space, into the movable part (1.1)the rotor and the stationary part (1.2)the stator. Both parts of the body are bound by two thrust rings (1.7a) and (1.7b), that are fastened concentrically on the both opposite sides of the hydraulic space each to the respective edge of one body part and that overlap the other body part radially, to create in conjunction with both body parts two concentric slewing bearings.

Claims

1. A rotary vane hydraulic element, comprising a body divided into a movable part that creates a rotor and a stationary part that creates a stator, where both parts together confine internal hydraulic space in the shape of a toroid with a rotation axis (X-X), characterized in that the body is divided by plane (A-A) that crosses space perpendicularly to the rotation axis (X-X) and in case of the space of circular toroid shapeby plane (A-A) that crosses the space perpendicularly to the rotation axis (X-X) and a center point of a circle delimiting the space, into the rotor (1.1) and the stator (1.2) bound by two thrust rings (1.7a) and (1.7b) that are fastened concentrically on the both opposite sides of the hydraulic space each to a respective edge of one body part and that overlaps other body part radially to create in conjunction with both body parts two concentric slewing bearings that keep the rotor (1.1) and the stator (1.2) in one axial and radial position to each other and enable the rotor to rotate in relation to the stator around the rotation axis (X-X).

Description

EXAMPLES

[0021] Rotary Vane Hydraulic ActuatorFIG. 1 and FIG. 2.

[0022] Pumping the medium by the pump 1.17 through the distributor 1.18 and then through the supply piping 1.14a or 1.14b to the respective hydraulic chambers 1.13a and 1.13c or 1.13b and 1.13d causes the rotary movement of the movable vanes 1.11a in conjunction with the body upper part 1.1 (the rotor) around axis X-X in relation to the body lower part 1.2 (the stator). By the position of the distributor 1.18, the pump 1.17 pumps the medium through the piping 1.14a to the hydraulic chambers 1.13a and 1.13c, what causes the rotary movement of the body upper part 1.1 (the rotor) in clockwise direction around axis X-X.

[0023] The medium from the hydraulic chambers 1.13b and 1.13d is pressed by the movable vanes and flows through the piping 1.14b and then through the distributor 1.18 to the tank 1.19. The rotary movement of the body upper part 1.1 (the rotor) can be then transmitted onto other gears. As presented on the discussed scheme on FIG. 1 the rotary movement of the body upper part 1.1 (the rotor) is transmitted through the sliding-swinging connection 1.20 (the yoke), that is fastened to the rotor with the bolts 1.21, onto the tiller arm 1.22 embedded into the yoke 1.20 with one end. The other end of the tiller arm 1.22 is attached to the hub 1.23 which is mounted on the shaft 1.24 and fastened with the nut 1.25.

[0024] In the consequence of it, the rotary movement of the rotor 1.1 causes the rotary movement of the shaft 1.24, that is placed in the rotation axis X-X of the actuator. The rotary vane hydraulic element applied as the rotary actuator, as described above, can be used for example for closing/opening of the butterfly valves and for activating of stock in steering gears.

[0025] Valve

[0026] The present solution can also be used as various type of valve to contrail the direction and/or the intensity of the medium flow. In this case the vanes, that are fastened to one part of the body and performing the movement in relation to the other part of the body, are used for opening and closing of the supply piping openings, that are located in the relevant part of the body, while the hydraulic chambers between the vanes are used for connection of the respective pipings.

[0027] Shut Off ValveFIG. 8 and FIG. 9.

[0028] FIGS. 8 and 9 present the scheme of the solution used as shut off valveitem 4.1. The scheme shows the cross section through the toroidal hydraulic space of the element, on which the following items are indicated: one movable vane 4.2, that is fastened to the rotor (not visible on drawings), the lower surface of the hydraulic space of the stator, in which there are two openings made for the supply pipings: 4.3a and 4.3b. In the case, that is shown on FIG. 8, when the rotor is in the middle position, it closes the opening of the supply piping 4.3a by the movable vane 4.2 to shut off the medium flow through the element.

[0029] When the rotor in conjunction with the movable vane 4.2, that is fastened to it, rotates from the middle position shown on FIG. 8 to any direction, but not covering the opening of the piping 4.3b, to the position shown on FIG. 9, then the opening of the supply piping 4.3a is open and the pipings 4.3a and 4.3b are connected through the hydraulic chamber inside the element, what makes possible for the medium to flow through the element.

[0030] Three Position Three Way DistributorFIGS. 10-15.

FIGS. 10 to 15 present the scheme of the solution used as three position three way distributoritem 4.10. The figures show the cross section through the toroidal hydraulic space of the element, on which the following items are indicated: one movable vane 4.1, that is fastened to the rotor (not visible on the scheme), one immovable vane 4.2, that is fastened to the stator and also the lower surface of the hydraulic space of the stator in which three openings of the supply pipings 4.13a, 4.13b, 4.13c are made.

[0031] In the case shown on FIG. 10 the rotor is in the middle position in which it closes the opening of the supply piping 4.13a by the movable vane 4.11, and in this way it shuts off the medium flow through the element. This position of the element 4.10 corresponds to the symbol of the distributor position 4.14a shown on FIG. 11. When the rotor of the discussed element in conjunction with the movable vane 4.11 rotates from the middle position in clockwise direction to the position shown on FIG. 12, the opening of the supply piping 4.13a is open and the pipings 4.13a and 4.13b are connected through the chamber 4.15a. This position of the element 4.10 corresponds to the symbol of distributor position 4.14b shown on FIG. 13.

[0032] When the rotor in conjunction with the movable vane 4.11 rotates from the middle position in counterclockwise direction to the position shown on FIG. 14, the opening of the supply piping 4.13a is open and the pipings 4.13a and 4.13c are connected through the chamber 4.15b. In this position the element 4.10 corresponds to the symbol of distributor position 4.14c shown on FIG. 15.

[0033] Three Position Four Way DistributorFIGS. 16-21.

[0034] Figures from 16 to 21 present the scheme of the solution used as three position four way distributoritem 5.1. The figures show the cross section through the toroidal hydraulic space of the element 5.1, on which the following items are indicated: two movable vanes: 5.2a and 5.2b, that are fastened to the rotor (not visible on the scheme), two immovable vanes: 5.3a and 5.3b, that are fastened to the stator and also lower surface of the hydraulic space of the stator in which six openings of the supply pipings 5.4a, 5.4b, 5.4c, 5.4d are made.

[0035] In the case shown on FIG. 16 the rotor is in the middle position in which it closes with the movable vanes 5.2a and 5.2b the openings of the piping: the inlet 5.4a and the outlet 5.4b respectively, and in this way it shuts off the medium flow from the pump 5.5 to the actuator 5.6 and outflow of the medium from the actuator 5.6 to the tank 5.7. This position of the element 5.1 corresponds to the symbol of distributor position 5.8a shown on FIG. 17. In this position of the distributor the actuator remains immovable.

[0036] When the rotor in conjunction with the movable vanes 5.2a and 5.2b rotates from the middle position shown on FIG. 16 in clockwise direction to the position shown on FIG. 18, the openings of the inlet piping 5.4a and outlet piping 5.4b are open and the pipings 5.4a with 5.4c are connected through the chamber 5.9a and also the pipings 5.4b with 5.4d are connected through the chamber 5.9b. Then the pump 5.5 supplies the lower chamber of the actuator 5.6 through the piping 5.4a, the chamber 5.9a and the piping 5.4c, what causes the upward movement of the piston.

[0037] The upward movement of the piston causes that the medium from the upper chamber of the actuator 5.6 is pumped through the piping 5.4d, the chamber 5.9b, and then through the piping 5.4b to the tank 5.7. In this position the element 5.1 corresponds to the symbol of distributor position 5.8b shown on FIG. 19.

[0038] When the rotor in conjunction with the movable vanes 5.2a and 5.2b rotates from the middle position shown on FIG. 16 in counterclockwise direction to the position shown on FIG. 20, the openings of the inlet piping 5.4a and outlet piping 5.4b are open and the pipings will be connected, but this time the piping 5.4a with 5.4d through the chamber 5.9c and the piping 5.4b with 5.4c through the chamber 5.9d.

[0039] Then the pump 5.5 supplies the upper chamber of the actuator 5.6 through the piping 5.4a, the chamber 5.9c and the piping 5.4d, what causes the downward movement of the piston. The downward movement of the piston causes that the medium from the lower chamber of the actuator 5.6 is pumped through the piping 5.4c, the chamber 5.9d, and then through the piping 5.4b to the tank 5.7. In this position the hydraulic element 5.1 corresponds to the symbol of distributor position 5.8c shown on FIG. 21.

[0040] Safety ValveFIGS. 22-25

[0041] Figures from 22 to 25 present the scheme of the solution used as safety valveitem 6.1. The figures show the cross section through the toroidal hydraulic space of the element 6.1, on which the following items are indicated: one movable vane 6.2, that is fastened to the rotor (not visible on the scheme), one immovable vane 6.3, that is fastened to the stator, the lower surface of the hydraulic space of the stator in which two openings are made: for the supply piping 6.4a and for the outflow piping 6.4b. Inside the element there is the spring 6.5, that is placed in the chamber 6.6a between the movable vane 6.2 and immovable vane 6.3.

[0042] In the case shown on FIG. 22 the pressure inside the supply piping 6.4a is below the permissible pressure, that is set by the tension of the spring 6.5, and the movable vane 6.3 is in the middle position in which it closes the opening of the outflow piping 6.4b. This position of the element 6.1 corresponds to the symbol of the safety valve 6.7a, that is presented on FIG. 23.

[0043] When the pressure in the supply piping 6.4a increases above the permissible, that is set by the tension of the spring 6.5, what is shown on FIG. 24, than the pressure increases also in the chamber 6.6b. This causes the thrust on the vanes that makes the rotor in conjunction with the movable vane 6.2 rotate from the middle position in clockwise direction, to open the outflow piping 6.4b.

[0044] With regard to this the medium flows from the piping 6.4a, through the chamber 6.6b, the piping 6.4b to the tank 6.8 and this results in decreasing of the pressure in the piping 6.4a. This position of the element 6.1 corresponds to the symbol of the safety valve 6.7b shown on FIG. 25.

[0045] Displacement PumpFIG. 26.

[0046] The solution can be also used as the displacement pump with rotary reversible movement, what is schematically presented in FIG. 26. The scheme shows the cross section through the toroidal hydraulic space of the element 6.10, on which the following items are indicated: two movable vanes 6.1a and 6.1b, that are fastened to the rotor (not visible in FIG. 26), two immovable vanes 6.12a and 6.12b, that are fastened to the stator, and also the lower surface of the hydraulic space of the stator in which the openings of the supply piping 6.13a and outflow piping 6.13b are made.

[0047] Inside the supply and the outflow piping and also inside the movable vanes there are installed one way valves 6.14, which allow the medium to flow in one direction only: from the tank 6.15 to the tank 6.16. When we use external drive to propel the rotor in rotary reversible movement in conjunction with the movable vanes, then in case of the clockwise rotation of the rotor, the medium is sucked from the tank 6.15 through the piping 6.13a to the chamber 6.17a, and from the chamber 6.17b is pressed through the piping 6.13b to the tank 6.16.

[0048] From the chamber 6.17c the medium flows through the one way valve inside the movable vane 6.11a to the chamber 6.17d. When the rotor is propelled in the counterclockwise rotation, then the processes in the chambers are to change: the medium is sucked from the tank 6.15 to the chamber 6.17c and is pressed from chamber 6.17d to tank 6.16. From the chamber 6.17a the medium flows through the one way valve inside vane 6.11b to the chamber 6.17b.

LIST OF DRAWINGS, FIGURES AND PARTS

[0049] First Drawing

[0050] FIG. 1: General scheme of the solution in vertical viewsection B-B.

[0051] FIG. 2: General scheme of the solution in plane viewsection A-A, in conjunction with the scheme of hydraulic system.

DESIGNATION OF THE ITEMS

[0052] 1.1 Body upper part (movable partrotor) of the rotary vane hydraulic element [0053] 1.2 Body lower part (stationary partstator) of the rotary vane hydraulic element [0054] 1.3 Foundation [0055] 1.4 Bolts fastening lower part 1.2 (stator) to foundation 1.3 [0056] 1.5a Outer side edge [0057] 1.5b Inner side edge [0058] 1.6a Outer radial bearing [0059] 1.6b Inner radial bearing [0060] 1.7a Outer thrust ring [0061] 1.7b Inner thrust ring [0062] 1.8 Bolts fastening thrust rings to side edges [0063] 1.9a Outer lower axial bearing [0064] 1.9b Inner lower axial bearing [0065] 1.10a Outer upper axial bearing [0066] 1.10b Inner upper axial bearing [0067] 1.11a Movable vanes (rotor vanes) [0068] 1.11b Immovable vanes (stator vanes) [0069] 1.12 Bolts fastening vanes to the body parts [0070] 1.13a, b, c, d Hydraulic chambers between vanes [0071] 1.14a, b Piping [0072] 1.15 Vane seals [0073] 1.16a Hydraulic space outer seal [0074] 1.16b Hydraulic space inner seal [0075] 1.17 Pump [0076] 1.18 Distributor [0077] 1.19 Tank [0078] 1.20 Sliding-swinging connection (yoke) [0079] 1.21 Bolts fastening connection 1.20 to rotor 1.1 [0080] 1.22 Tiller arm [0081] 1.23 Hub [0082] 1.24 Shaft [0083] 1.25 Nut fastening hub 1.23 to shaft 1.24

[0084] Second Drawing

[0085] FIG. 3: Scheme of the solution in which both body parts have one each the raised side edge, item 2.1a and 2.1b.

[0086] FIG. 4: Scheme of the solution in which the side edges are part of the thrust rings, item 2.2a and 2.2b.

[0087] FIG. 5: Scheme of the solution with the internal toroidal hydraulic space of rectangular cross section, item 2.3.

[0088] Third Drawing

[0089] State of the artRotary vane hydraulic actuator

[0090] FIG. 6: Vertical viewsection F-F

[0091] FIG. 7: Plane viewsection E-E

DESIGNATION OF THE PARTS

[0092] 3.1 Base [0093] 3.2 Cylindrical body (stator) [0094] 3.3 Cover [0095] 3.4 Rotary hub (rotor) [0096] 3.5 Shaft [0097] 3.6 Nut fastening hub 3.4 to shaft 3.5 [0098] 3.7 Movable vanes (rotor vanes) [0099] 3 8 Immovable vanes (stator vanes) [0100] 3.9 Bolts fastening immovable vanes 3.8 to the body 3.2 [0101] 3.10a, b, c, d Hydraulic chambers between vanes [0102] 3.11 Bolts fastening cover 3.3 to the body 3.2 [0103] 3.12 Foundation [0104] 3.13 Bolts fastening base 3.1 to foundation 3.12 [0105] 3.14a Upper radial bearing [0106] 3.14b Lower radial bearing [0107] 3.15 Axial bearing (thrust bearing) [0108] 3.16 Vane seals [0109] 3.17a Hydraulic space upper seal [0110] 3.17b Hydraulic space lower seal [0111] 3.18 Pump [0112] 3.19 Distributor [0113] 3.20a, b Piping [0114] 3.21 Tank

[0115] Fourth Drawing

[0116] FIGS. 8 and 9: Scheme of the use of the solution as shut off valve.

[0117] FIGS. 10 to 15: Scheme of the use of the solution as the three position three way distributor.

[0118] Fifth Drawing

[0119] FIGS. 16 to 21: Scheme of the use of the solution as the three position four way distributor.

[0120] Sixth Drawing

[0121] FIGS. 22 to 25: Scheme of the use of the solution as the safety valve.

[0122] FIG. 26: Scheme of the use of the solution as the rotary reversible displacement pump.