EA012812B1 - Positive displacement rotary machine (embodiments) - Google Patents

Abstract

The invention relates to machine construction, in particular to rotary machines provided with nonparallel axes of a rotor and pistons. The claimed invention is aimed at increasing the synchronizing reliability of the working members of a spherical machine. The inventive positive-displacement rotary machine comprises a body, the working surface of which is made in the form of a part of a segment of sphere, a rotor with a concentric working surface, rotatably mounted in the body and having a working surface of rotation, a ring concentric working cavity formed by the body and the rotor, a separator in the form of the inclined washer wobble plate, fixedly mounted in the body and dividing the working cavity into two parts. Besides at least one slot is made on the rotor working surface along its geometrical axis of rotation; a piston, which can close off (seal) the working cavity and oscillate rotationally about its geometrical axis intersecting geometrical axis of the rotor, is mounted in the rotor; moreover, the piston is made at least in the form of a part of a disk and there is at least one sealing through-slot for the separator passage in each piston. At least one through passage, which makes it possible to position input and output ports on the opposite sides of the separator by mutually spacing them along the axis of the rotor, is embodied on one of the areas of the separator, thereby simplifying the combination of stages.

Description

The technical field to which the invention relates.

The invention relates to the field of engineering, namely to rotary volumetric machines, which can be used as pumps, compressors, hydraulic actuators, etc.

The level of technology

Known volumetric rotary machine (ORM) (8I 2004133654, 8I 2004124353 (1), which has a housing with an internal cavity of an annular shape. In this cavity there is a spiral-shaped separator in which the rotor is installed. The working surface of the rotor is a surface of revolution in which there is at least one groove along the axis of rotation of the rotor, in each of which a piston is mounted for rotation, partially protruding from one side of the rotor. At the same time, the piston has at least one through-cut along the perimeter that interacts with section A splitter for synchronizing the rotation of the piston with the rotation of the rotor. The entrance window of the machine and the exit window of the machine are separated along the axis of the rotor and are separated from each other by a separator.

Such a machine has the following advantages.

The piston is securely mounted in the rotor slot, protruding about half of it.

The separation of the entry and exit windows along the rotor axis makes it easy to combine such machines into multistage, including with a common rotor for many stages. Such machines are used in submersible installations. A common rotor allows you to remove the load from the radial, and often from the thrust bearings of the rotor by balancing the loads of individual stages when they rotate relative to each other.

A significant advantage of the pump created on the basis of such a machine, is the constancy of flow.

The disadvantage of such machines is the complex shape of the separator and the piston slot, which does not allow their contact over a large area to reduce the wear of this friction pair (to reduce the ideal load on this friction pair and to increase its resource).

ORM is known (1458459 and similar to it 62 3206286A1), in which the body has a cavity in the form of a sphere segment, in which along the axis of symmetry of the cavity a separator is installed in the form of a sector of a circle overlapping the cavity; a rotor mounted for rotation in a housing with a working surface in the form of two truncated cones, supported by vertices on the sphere from opposite sides, and on the surface of the sphere, at an angle to the axis of symmetry of the rotor, there is an annular groove made tangentially to both cones. In this groove, the piston is fastened with the possibility of rotation, in which there is a slot capable of letting through the separator. Moreover, the piston interacts with the separator through the sealing synchronizing element (SSE), made in the form of a cylinder, cut in half by a slit, starting at one end and reaching almost to the second end. The input window of the working fluid and the corresponding output window is located on one side of the piston. On the other side of the piston there is a pair of entry and exit windows.

The advantages of such a machine are as follows: good contact of the piston with the housing chamber over a spherical surface, good contact between the piston, the sealing element and the separator, simple geometric shapes: a flat separator, a flat piston, etc.

ORM also has drawbacks: the inconvenience of combining such a machine into a multistage machine, due to the fact that the entry and exit windows are located on one side of the piston, and for passage from step to step, a channel must be made to bypass the spherical cavity of the housing along the rotor axis. Disadvantages are also uneven feeding, weak piston fastening (only part sitting in the groove on the sphere), which also weakens the shaft due to the annular groove, unreliable fastening of the sealing power element in the piston slot (jamming with increasing load).

The ORM is known (ΌΕ 3146782 A1), which has a body with a cavity in the form of a sphere segment, a rotor mounted for rotation, in which a through-cut is made along the axis of the rotor. There is also a piston in the form of a disk mounted in the rotor slot with the possibility of rotation, a camera in the form of a spherical segment, blocked by a separator in the direction of rotation of the rotor, exit and entrance windows, located before and after the separator, respectively. Moreover, the rotation of the piston is synchronized with the rotation of the rotor by means of a shaft motionlessly going through the rotor and a system of gears, one of which is fixed to the piston.

The advantages of this machine are the spherical contact of the piston and the camera, the reliability of the mounting of the piston protruding in both directions from the shaft, the presence of a strong shaft (the longitudinal groove weakens it a little), the ability to withdraw (dilute) the inlet and outlet windows along the shaft to combine several stages on one shaft , leakage independence from the synchronization mechanism wear.

The disadvantage is an unreliable synchronization mechanism, especially if it is necessary to pass the gear shaft through several stages.

The aim of the invention is to create a volumetric rotary high-speed machine increased tightness with reliable fastening of the pressure element (piston), reliable synchronization mechanism, allowing multiple short-term overload, large resource, with low inertial loads from the piston to the synchronization mechanism.

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The task is achieved by the fact that according to the invention in a volumetric rotor machine, comprising a housing, the working surface of which is made as part of a sphere segment, a rotor with an output shaft and a concentric working surface mounted in the housing for rotation, an annular concentric working cavity formed by the housing and a rotor, a separator, made in the form of an inclined washer, fixedly mounted in the housing and dividing the working cavity into two parts; moreover, on the working surface of the rotor at least one groove along its geometric axis of rotation, in which a piston arranged as a part of a disk, partially protruding into the working cavity for its overlapping, is installed with the possibility of performing rotational oscillations around the geometric axis of the machine, and in each protruding part of the piston there is a slot for the passage of the separator, the means of synchronization of the piston is a separator, made in the form of an inclined washer and fixed motionless in the housing.

According to the invention, the working surface of the rotor is made in the form of two coaxial surfaces of the truncated cones resting on the sphere with the truncated part.

The task is achieved by the fact that according to the invention, the grooves on the working surface of the rotor are connected in the middle of the rotor.

The task is achieved by the fact that according to the invention, the separator is made in the form of a flat washer.

The task is achieved by the fact that according to the invention, the separator is made in the form of a washer with a conical working surface.

The task is achieved by the fact that according to the invention, the separator is installed in the housing so that the rotor is diametrically opposite parts of the separator, located on its opposite sides.

The task is also achieved by the fact that according to the invention, notches are made on the separator where the rotor touches.

The task is achieved by the fact that according to the invention, the separator is made in the form of two parts of the washer.

The task is also achieved by the fact that according to the invention, the part of the washer is connected to the connector in the form of ">".

The task is achieved by the fact that according to the invention, the piston is made in the form of a disk with a spherical side surface and with two slots for the passage of the separator.

The task is achieved by the fact that according to the invention, the piston is made in the form of a disk with two slots for the passage of the separator with relief in areas remote from the slots.

The task is achieved by the fact that according to the invention, the piston is made in the form of a truncated sector of the disk less than 180 ° with one slot for the passage of the separator.

The task is also achieved by the fact that according to the invention, at least one sealing synchronizing element is installed in the slot of the piston.

The task is also achieved by the fact that according to the invention, the sealing synchronizing element is designed in the form of a cylinder with slots at its ends, and the planes of the slots coincide.

The task is also achieved by the fact that according to the invention, the lateral areas of the slits are expanded due to the protrusions.

The task is achieved by the fact that according to the invention, the middle part of the sealing connecting element has a smaller diameter.

The task is achieved by the fact that according to the invention, the sealing synchronizing element is made in the form of plates on the piston slot.

The task is achieved by the fact that according to the invention, the sealing synchronizing element is made in the form of two plates connected by an axis.

The task is also achieved by the fact that according to the invention, the sealing synchronizing element is designed as a roller.

The invention is illustrated using the drawings.

FIG. 1 is an isometric view of a volumetric rotor machine stage with the “ascending” part of the body removed (at the same time, to improve understanding, the corresponding part of the separator is left).

FIG. 2 is an isometric view of the ORM with entry and exit windows.

FIG. 3 is an isometric “downward” part of the body.

FIG. 4 shows in isometric interaction of the piston and the separator through the sealing synchronizing element.

FIG. 5 is an isometric view of a part of the ORM shaft.

FIG. 6 shows an isometric piston.

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FIG. 7 is an isometric view of a cylindrical sealing synchronizing element with additional protrusions and with a middle part of a smaller diameter.

FIG. 8 is an isometric view of a volumetric rotor machine stage with the “ascending” part of the body removed and the inlet and outlet channels on the rotor (with the corresponding part of the separator left to improve the understanding).

FIG. 9 is an isometric view of a piston with a sealing synchronizing element.

FIG. 10 is an isometric cylindrical USE with slots at the ends.

FIG. 11 is an isometric view of the USE piston in the form of linings.

FIG. 12 is an isometric view of the piston for the SSE shown in FIG. eleven.

FIG. 13 is an isometric SSE in the form of a lining.

FIG. 14 is an isometric view of an ORM rotor with a groove under the piston shown in FIG. 12.

FIG. 15 is an isometric view of a part of the USE piston in the form of two plates connected by an axis.

FIG. 16 is an isometric view of the USE piston in the form of rollers.

FIG. 17 is an isometric view of the piston with relief and a through hole under the SSE.

FIG. 18 isometric view of two discs with relief and cutouts in the piston, with the SSE forming the crosspiece.

FIG. 19 is an isometric view of a disc with relief and a cutout in the piston, as well as the SSE with a groove under the crosspiece.

FIG. 20 is an isometric view of a single stage ORM rotor with a one-quarter cut, with four pistons and a separator.

FIG. 21 is an isometric view of the OPM piston as part of a slotted disc.

FIG. 22 shows an isometric view of the piston as a part of a disk with a slot and the SSE in the form of linings, which can work with the rotor of FIG. 20.

FIG. 23 shows an isometric piston in the form of “scissors” with SSE in the form of linings.

FIG. 24 is a diagram explaining the operation of the ORM in the form of a compressor.

Where

- housing;

- part of the body, ascending half;

- part of the body, descending half;

- spherical cavity;

- concentric hole for the output of the rotor shaft;

- geometric axis of the machine

- rotor;

- piston;

- separator;

- the ascending part of the separator;

- the descending part of the separator;

- login window;

- exit window;

- channel without turning the flow around the body;

- channel to turn the flow around the body;

- spherical part of the rotor above the cone;

- the surface of the rotor in the form of a truncated cone;

- central spherical part of the rotor;

- the output of the rotor shaft;

- working cavity;

- a groove in the rotor under the piston;

- a groove in the rotor under the piston axis;

- notch in the rotor under the SSE;

- spherical surface of the housing;

- input channel on the rotor;

- output channel on the rotor;

- piston axis;

- The outer part of the piston;

- The central thickened part of the piston;

- through hole in the piston under the SSE;

- spherical side surface of the piston;

- transitional spherical part of the piston;

- a slot in the piston under the separator;

- recess under the roller in the slot of the piston;

- the bottom of the slot piston;

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- side surface of the slot of the piston;

- the cylinder on the side surface of the piston slot;

- a cylindrical recess on the side surface of the piston slot;

- a cylindrical bore in the piston under the SSE;

- separator connector;

- the internal spherical surface of the separator;

- pass on the separator;

- the tabs on the separator;

- sealing synchronizing element (SSE);

- a slot in the SSE under the separator;

- projections on the SSE;

- pin;

- flat or conical platform on the SSE;

- lateral surface of the SSE slot;

- the bottom of the SSE slot;

- spherical end of the SSE;

- cylindrical protrusion on the SSE;

- cylindrical groove on the SSE;

- SSE plates;

- axis connecting plate SSE;

- roller mounted in the slot of the piston;

- sampling in the piston for relief;

- working chamber of the minimum volume;

- working chamber of maximum volume;

- half of the disc type "scissors";

- cutout in the piston;

- the cylindrical part of the SSE;

- flat (conical) - the surface of the separator;

- geometric axis of the piston;

- groove in the SSE under the cross;

- hole for mounting the crossbar axis.

Description of the best model of the machine

Volumetric rotary machine (Fig. 1) is arranged as follows. In case 1 (Fig. 2), made of two parts, conditionally “ascending” half 2 and, generally symmetrical to it, “descending” half 3, there is a cavity 4 in the form of a segment of a sphere from which there is a concentric hole 5 (FIG. 3). In the spherical cavity 4 at an angle to the geometric axis of the hole, which is the geometric axis of the machine 6, a separator 9 is installed, made in the form of a washer with an internal spherical hole 41 (Fig. 1, 3, 4). For separation, the separator 9 is made of two parts: conditionally "Ascending" 10 and "descending" 11, each of which is attached to the corresponding parts of the housing 2 and 3 (Fig. 3.4). In the housing, the rotor 7 is mounted for rotation about the axis 6 of the housing 1 with a working surface made in the form of two surfaces of truncated cones 17, supported by smaller bases on the central sphere 18 (Fig. 5). The large bases of the cones are connected to the shaft outputs 19 that are 19 segments of the sphere 16, concentric to the central sphere 18 and radii approximately equal to the radius of the working cavity 4. On the working surface of the rotor 7 there is a through groove 21 along the geometrical axis of the machine 6 (Fig. 5). For ease of disassembly, the rotor 7 is made of two halves. The spherical part of the housing 4, the conical part of the rotor 17, the central spherical part of the rotor 18 and the separator 9 form the working cavity 20, which the separator 9 divides into two parts (Fig. 1). The separator 9 touches the conical surface 17 of the rotor 7 with opposite sides in two diametrically opposite places (Fig. 1). In the groove 21 is installed with the possibility of rotational oscillations around the geometric axis 68 intersecting perpendicular to the geometric axis 6 of the machine piston 8 (Fig. 1), protruding in both directions from the through groove 21. The piston 8 is made in the form of a disk having an outer 28 and central thickened 29 parts (Fig. 6). The outer part of the piston 28 is bounded by a spherical surface 31, the radius of which is approximately equal to the radius of the working cavity 4. The transition between the outer part of the piston 28 and the central part 29 is made along a sphere 32, the radius of which is approximately equal to the radius of the central sphere 21. On the outer part 28 there are two diametrically opposite slot 33 (Fig. 6). A cylindrical bore 39 is made through the slot 33 in diameter, extending to a shallow depth in the thickened part 29 and passing further into a through-hole of smaller diameter 30. The piston 8 is made fully with the axis 27. In each cylindrical hole 39 of the piston 8 a part of the sealing synchronizing element 44 is installed, made in the form of a cylinder 62, the end of which is cut by a slit 45 under the separator 9. To increase the area of the side surface of the slit 45 on the cylindrical part of the SSE 44, the ridges 46 are cut by the slit slit 45 (Fig. ). In the untreated part of the SSE 44, coaxial

- 4 012812 hole for pressing the pin. The two parts 62 of the SSE 44, installed in two diametrically opposed slots 45, are connected into one with the help of a pin 47 (Fig. 7). There are two pairs of inlet 12 and outlet 13 windows, and the inlet 12 and outlet 13 windows working together are located on the same side of the separator 9 from below or above along the axis of the rotor 20 and are adjacent to the point of contact of the separator 9 with the rotor 7 on both sides (Fig. 2, 3). Another possibility of placing windows is their arrangement on the rotor (Fig. 8). In this case, they are adjacent to the groove 21 under the piston 7.

In this ORM, a piston 8 (Fig. 9), made without an axis and equipped with a SSE 44 of a simpler form, can also be used. The SSE 44 is made in the form of a cylinder, on the spherical ends of which 51 there are two slots 45 under the separator 9. The piston 8 (Fig. 9) differs from the piston 8 (Fig. 6) in that instead of holes of different diameters 30 and 39 there is only one through hole 30. The SSE 44 is in contact with the separator 9 with the lateral surface of the slot 49 and the bottom of the slot 50, which has a spherical shape (FIG. 10).

FIG. 11 shows a piston without an axis with USE 44 in the form of linings. On the side surface 36 of the slot 33 of the piston 8 there are two cylindrical protrusions 37 and a cylindrical recess 38 (Fig. 12). The SSE, on the one hand, has two coaxial cylindrical recesses 53, between which there is a cylindrical protrusion 52, and on the other hand a flat platform or a portion of the conical surface 48 (Fig. 13). The rotor 7 for a piston 8 with such USCE 44 (FIG. 13) has recesses 23 under the USE in the form of linings (FIG. 14). The piston 8 (Fig. 12) differs from the piston 8 (Fig. 9) in that it does not have a through hole 30.

The SSE may consist of two parts, each of which consists of two plates 54, connected by an axis 55 (Fig. 15).

The SSE 44 can be made in the form of a roller 56 (FIG. 16) located in the recess 34 on the side surface 36 of the slot 33 of the piston 8.

The piston can be made without USE (Fig. 21).

To reduce mechanical synchronization wear at high speeds, piston 8 can be lightened. This is effectively done by sampling material on parts of piston 8 close to the axis of rotation of the rotor 7, by using material with lower density (especially in specified places), by removing these parts of piston 8. In the latter case, by removing parts of piston 8, the length of one pump stage can be shortened.

FIG. 17, a lightweight version of the piston 8 is made. Relief is a sample of 57 material on parts of the piston 8 close to the axis of rotation of the machine and remote from the axis of the piston; the samples 57 may not be end-to-end or may be filled with inserts of a lighter material.

Another direction for modifying the machine is to increase the number of pistons 8. To do this, increase the number of slots 21 in the rotor 7. An example of the design and relative position of two or more pistons 8 is shown in FIG. 18.

A relief 61 is additionally made in the middle part of the piston 8 having relief. As a result, two protruding parts of the piston 8 are connected to each other by one or two arcs, which allows the pistons to cross at an angle to each other and not interfere with their oscillations relative to the rotor. The presence of a void in the center of each piston allows us to dock with each other the SSE 44 axis in the form of a cross (Fig. 19). To do this, in the middle part of the SSE, a groove 65 is made up to the middle of the cylinder. For greater rigidity, the cross can be fixed with an axis through the hole 66 in the groove 65 of the SSE.

Another method for adding pistons 8 is shown in FIG. 20 - make slots in the rotor 7 not through and put pistons 8 in each, which are made in the form of a disk sector less than 180 ° (Fig. 21). While the pistons 8 can be held due to contact with the separator 9 on a flat (conical) surface 63 and on the spherical (cylindrical) surface of the separator 41 and / or on the spherical surface of the housing 24.

FIG. 22 shows the piston 8, which differs from the piston 8 (Fig. 21) by the presence of the SSE 44 (Fig. 13). For such pistons 8, grooves can be made in the slots of the rotor 21 in order to avoid liquid pinching.

While the pistons 8 can be held due to contact with the separator 9 on a flat (conical) surface 63 and on the spherical (cylindrical) surface 41 of the separator and / or on the spherical surface 24 of the housing 1.

At the same time, due to the pressing by centrifugal forces and pressure forces of the working fluid, gaps on the sphere 24 can be selected. The gaps for separator 9 can be selected if the thickness of separator 9 increases towards the periphery.

For automatic selection of the gaps between the separator 9 and the slot 33 of the piston 8 or the SSE 44 the piston 8 is made in the form of scissors (Fig. 23). Such a piston 8 consists of two parts 60. Pistons 8 of this type can be performed with or without SSE 44.

While the preload of the two parts 60 of the piston 8 can be carried out by centrifugal forces acting on the part 60 of the piston 8, by centrifugal forces that act on the additional proppant, by the spring, by the pressure of the working medium.

The piston 8 can be mounted in various ways.

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The piston 8 can be made fully with the axis of rotation 27, then the rotor 7 is split.

The piston 8 can be manufactured with a press-fit axle 27, in which there is an opening for the passage of the pin.

The piston 8 can be manufactured with recesses instead of axis 27, for fixing in the rotor 7 with the help of pins.

The piston 8 may not have additional fixation in the rotor 7 (held in the working position by the separator 9 and / or the housing 1).

The piston 8 can be centered due to the shape of the groove 21 in the rotor 7.

From the point of view of displacement processes, it is convenient to talk about the number of 20 displacers protruding into the working chamber, regardless of how they are arranged inside the rotor 7, how they are fixed and balanced. But from the point of view of dynamic centrifugal and inertial loads, sealing properties, loads on friction pairs, the internal structure and fastening of the pistons 8 is important. That is, it is important whether the two protruding parts of the piston are 8 parts of the same piston 8 or different, is installed in the piston 8 of SSE 44 projecting into diametrically opposite parts of the working chamber or only in one direction, does the separator 9 comprise integral SSE 44, or consisting of separate parts, located on opposite sides of the separator 9.

ORM, made as a pump, works as follows. When the rotor 7 rotates, the upper half of the working cavity 20 overlaps the protruding part of the piston 8 in the area between the windows 12 and 13, breaking it into two working chambers of a decreasing volume (in front of the piston) and an increasing volume (behind the piston). The working fluid from the decreasing working chamber leaves the exit window 13, enters the growing working chamber through the entrance window 12. At the same time, the piston 8 rotates relative to the rotor 7, interacting directly with the slot 33 or through SSE 44 with the separator 9. When this part of the piston enters the zone the bypass (windows of inlet 12 / outlet 13) immediately or after some time is replaced by the next piston 8. The process repeats. Similarly, for the lower half of the working cavity 20.

When running ORM as a compressor and with a large number of displacers (lining parts of the piston 8) between the separator 9 and the conical surface 17 of the rotor 7, a large gap can be left. The work of such a machine is easier to understand from the diagram (Fig. 24). When approaching a pair of neighboring displacers to the place where a chamber of maximum size 59 forms between them (in the area of the ascending 10 and descending 11 parts of the separator 9), the rear piston 8 leaves the zone of the inlet window

12. With further movement, the volume cut off by the pistons 8 begins to decrease. When the specified compression ratio is reached, the front piston 8 falls into the exit window area 13. Upon further movement, the cut-off volume is displaced into the exit window 13 until the camera reaches the minimum volume 58 (in the joint area of the ascending 10 and descending 11 parts of the separator 9). After that, the rear piston 8 leaves the exit window 13, the volume of the chamber between the pistons 8 with the remaining gas starts to increase until the pressure equals the input pressure. After that, the front piston 8 falls into the area of the inlet window 12, the process of filling the chamber begins. After the camera reaches the maximum volume of 59, the process repeats. Similar processes occur in the lower half of the working chamber.

In the machines under consideration, there is a phenomenon of the piston 8 turning by the pressure of the medium in the direction of its rotation. The torque is proportional to the thickness of the piston 8 portion protruding from the rotor 7. Therefore, the thickness of this piston 8 portion should be selected based on the ratio of the friction torque in the axis 27 of the piston 8 to the pressure drop across the piston 8. The calculation procedure is not given for the sake of obviousness.

Claims (19)

1. Volumetric rotary machine, comprising a housing, the working surface of which is made as part of a segment of a sphere, a rotor with a working surface of rotation mounted rotatably in the housing, an annular concentric working cavity formed by the housing and the rotor, a separator made in the form of an inclined washer, mounted motionless in the housing at an angle to the geometric axis of rotation of the rotor and dividing the working cavity into two parts, at least one groove along its geome is made on the working surface of the rotor of the rotational axis, a piston is installed in the rotor with the possibility of overlapping (sealing) the working cavity and performing rotational vibrations around its geometrical axis intersecting the geometrical axis of the rotor, moreover, the piston is made in the form of at least part of the disk, and at least one piston in each piston sealed slot for passage of the separator. 2. The volumetric rotary machine according to claim 1, where the working surface of the rotor is made in the form of two coaxial surfaces of truncated cones, resting the truncated part on a sphere. 3. The volumetric rotary machine according to claim 1, where the grooves on the working surface of the rotor are connected in the middle of the rotor. - 6 012812 4. The volumetric rotary machine according to claim 1, where the separator is made in the form of a flat washer. 5. The volumetric rotary machine according to claim 1, where the separator is made in the form of a washer with a conical working surface. 6. The volumetric rotary machine according to claim 1, where the separator is installed in the housing so that it touches the rotor with diametrically opposite parts of the separator located on its opposite sides. 7. The volumetric rotary machine according to claim 6, where recesses are made on the separator at the points of contact of the rotor. 8. The volumetric rotary machine according to claim 1, where the separator is made in the form of two parts of the washer. 9. The volumetric rotary machine of claim 8, where the parts of the washer are connected via a connector in the form>. 10. The volumetric rotary machine according to claim 1, where the piston is made in the form of a disk with a spherical side surface and with two slots for the passage of the separator. 11. The volumetric rotary machine according to claim 1, where the piston is made in the form of a disk with two slots for the passage of the separator with relief in areas remote from the slots. 12. The volumetric rotary machine according to claim 1, where the piston is made in the form of a truncated sector of the disk less than 180 ° with one slot for the passage of the separator. 13. A volumetric rotary machine comprising a housing, the working surface of which is made as part of a sphere segment, a rotor with a rotational working surface mounted rotatably in the housing, an annular concentric working cavity formed by the housing and the rotor, a separator made in the form of an inclined washer, mounted motionless in the housing at an angle to the geometric axis of rotation of the rotor and dividing the working cavity into two parts, at least one groove along its geome is made on the working surface of the rotor ternary axis of rotation, a piston is installed in the rotor with the possibility of overlapping (sealing) the working cavity and performing rotational vibrations around its geometric axis intersecting the geometric axis of the rotor, and the piston is made in the form of at least part of the disk, and each piston has at least one a sealed slot for the passage of the separator, and the machine contains sealing synchronizing elements installed in the slots. 14. The volumetric rotary machine according to item 13, where the sealing synchronizing element is made in the form of a cylinder with a slot for a separator, while two diametrically opposite cylinders are connected as a whole. 15. The volumetric rotary machine according to 14, where on the cylinders of the sealing synchronizing elements protrusions are made to increase the area of the side surfaces of the slots under the separator. 16. The volumetric rotary machine according to clause 15, where the synchronizing sealing element is made of two parts, each of which is two plates connected by an axis. 17. The volumetric rotary machine according to item 13, where the sealing synchronizing element is made in the form of pads mounted on the side surface of the piston slot. 18. The volumetric rotary machine according to 17, where the lateral sealing surface of the slot has a recess, and the plate is a cylindrical protrusion. 19. The volumetric rotary machine according to item 13, where the synchronizing element is made in the form of a roller located in a recess on the side surface of the piston slot.