DE1401400A1 - High pressure rotary piston machine - Google Patents

Description

Karl Eiekmann, 2420 Isshiki, Hayama-machi, Kanagawa-Ken / Japan

"High pressure rotary piston machine"

The invention relates to a high-pressure rotary piston machine with a piston hub and with piston valves, which rotate in slots with the piston hub Sidewalls are movably mounted and surrounded by a pendulum mounted jacket that is between the two Side walls of the piston hub extends, wherein between the piston hub and the skirt, the side walls and the piston. Slide the working chambers of the machine preferably in each two diametrically opposite suction and pressure zones are formed. The pendulum supported jacket ensures here that concentricity errors of the rotary piston were automatically recorded will.

In known machines of this type there is a risk that at high pressures, for example of several hundred atmospheres, the side walls pushed apart by the pressure acting in the working chambers and thus high gap losses in both

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NeU6 documents (Art. "/ Ä ι"., «. <. · .Ι. Ι construction: 3 of the amendment aea. V. 4, 3

arise on the side of the mantle, which are higher, the higher is the pressure in the working chambers. Even if the bending apart the side walls is only a small fraction of a millimeter, such gap losses can reduce the efficiency of the Decrease the machine significantly. On the other hand, fitting the jacket with too little interplay between the both side walls greatly increase the friction, especially at lower working pressures - in turn can lead to considerable losses in efficiency.

Task de? Invention is, above all, such gap and To keep efficiency losses as low as possible. The invention accordingly consists in that

a) the contactors for storing the piston valve in the Sidewalls that seal radially outward through the working chambers against the jacket, axially extending Ring walls are closed,

b) axially outside the sidewalls well closed outside. Compensating chambers are provided, which are connected to the pressure medium can be supplied to generate pressure fields counteracting the medium forces in the working chambers.

The invention enables the following to be achieved:

Depending on the level of the opposing pressures in the working chambers on the one hand and the equalization chambers on the other can be the game between the axially extending

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Select the ring walls of the cross winds and the jacket in such a way ;, that at low pressure there is relatively large land at higher pressure is relatively low. This is advantageous because, provided that the running game is the same between the Ring walls and the jacket-at lower pressures of the the harmful influence of friction on that of the gap losses predominates, while at higher pressures the gap losses very much solid rising. As a result of the counteraction of the However, pressure medium acting on equalization chambers can be this running game depending on the working pressure of the Reduce the machine so that optimum efficiency can be achieved at both low and high pressures.

There are machines known in which the side walls of the Piston are pressed against the end faces of the piston hub » The problem according to the invention does not arise in these machines, however, since the jacket forms part of the housing or firmly connected to the housing covers provided there and no gap losses occur laterally past the jacket can.

For pendulum mounting of the jacket, it can be provided with a spherical surface or by means of a cardan ring suspension be suspended in a supporting part.

In order to supply the working medium to the working chambers in a simple manner from a stationary housing or to remove it, despite the pendulum bearing of the jacket, it is necessary to

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partly means interposed which allow the pendulum movement of the shell relative to the fixed housing. For this For example, flexible inlets or outlets penetrating the jacket or a cardan ring can be provided, e.g. in the form of the Gimbal penetrating, on the machine housing or on the jacket spherically supported sockets or line parts.

In the drawing are two embodiments of the invention shown schematically. Show it

Pig. 1 shows a longitudinal section through the first embodiment according to line I-I of FIG. 2,

FIG. 2 shows a cross section along line II-II of FIGS. 1 and 3 shows a cross section corresponding to FIG. 2 through the second embodiment.

In the exemplary embodiment according to FIGS. 1 and 2, the piston hub 4l is firmly placed on the rotating piston shaft 40. It is surrounded by a casing 44 which can be adjusted radially eccentrically to the rotary piston. ^{Furthermore, side walls 46 f} , 46 ″ which are axially arranged on both sides and rotate with it and which are provided with radial slots 35 ′, 35 ″ for receiving the axial ends of the piston slides 45 are firmly connected to it.

On the axially outer side, the side walls 46 ^% , 46 ″ are supported against closure hoods 39 and 38, of which the closure hood 39 forms a flange part firmly connected to the shaft 40, while the closure hood 38 is slidably mounted on the shaft 40 The parts 38 j 46 ", 41, 46 'and 39 are through

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Clamping pin J> 6 held together axially and at the same time secured against turning with respect to the shaft 40.

As can be seen from FIG. 2, for the purpose of compensating for the radial pressure load, the rotary piston machine has two suction zones and two pressure zones diametrically opposite each other. These are determined by the inner surface of the jacket 44, which form two approximately crescent-shaped spaces, which are each divided by the piston slide 45 into a working chamber 42 acting as a suction chamber and a working chamber 43 acting as a pressure chamber. The supply and removal of the medium to and from the working chambers takes place through channels 4? ¹ and 47 ″, which are passed through the jacket 44, a split bearing ring 48 and a machine housing 49 serving as a support part. Seals 48 ′ and 49 ^f can be provided at the transition points.

In order to obtain an optimal gap between the jacket 44 and the piston valves 45, the radially outer ends of the slots 35 ^f or 35 "are arranged on the same or slightly smaller radius than the inner radius of the jacket delimiting the working chambers 42, 4j5. With appropriate dimensioning of the side walls 46 ^% ₉ 46 "or the ring walls of these side walls which you may have produced separately and which delimit the slots 35 V, 35" radially on the outside, they expand under internal pressure, so that the play between the jacket 44 and the piston slides 45 decreased.

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In the axially outer closure hood 38 is also a ' annular compensation chamber 34 is provided, which by a Ring piston 33 is closed, which is located on the adjacent bearing of the housing 49 on the snap ring 37 and thus on the shaft supports. The compensation chamber can be supplied with pressure medium, in such a way that it is at low pressure in the Working chambers also receive low pressure and at high pressure in the working chambers also high pressure, fiier durch can be achieved that the game 32 ', 32 "shown in the drawing is shown exaggeratedly large and at most only 0.1, but mostly 0.01 or 0.001 mm, a certain size does not exceed. In this way it can be achieved that at low pressure in the working chambers to achieve a low pressure Friction the game relatively large, with high pressure in the working chambers to avoid pressure medium losses, however, is relatively small.

In Fig. 3, for example, "shows how a flexible pressure medium passage when the overflow piston is acted upon from the outside of the housing into the working chambers, it is possible to increase the mobility of the jacket must not be restricted by rigid lines in order to comply with orbital errors. At the thread 88 is the Housing connection with channel 87 is provided. A ring 86 lies on the flat baking surface 94 of the connection on the housing 50 with a flat surface, which on the other hand has a spherical surface into which the sleeve 85 with its spherical rear wall engages. "Correspondingly, the jacket 54 has a channel window 8l with a planar support surface 82. This is in turn a

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Ring 80 with a flat surface and a spherical end surface at the other end., in which again a sleeve 8j5 with spherical The rear wall is »The rings 80 and 86 can be the same. The pods 8.5 and 85 are conveniently nested telescopically so that they are mutually sealed. One or more Springs 84 can the sleeves 83 and 85 in their rear press spherical seats. The diameter of the nested portions of the sockets 83 and 85 is greater than that Inner diameter of the flat and spherical sealing surfaces, -so that a pressure from the medium remains on the bushes in the direction of their rear sealing surfaces. If the Reaction pressure area from the working chamber is the same, but is directed in the opposite direction as the pressure medium pressure from the Bushings 8j5 and 85, then the pressure medium forces are from the flexible line on the jacket 54 lifted.

You can also use a connection socket in reverse Provide spherical surfaces., and the sockets in the Ansenlußbohrungen Let it slide and insert rings between them as shown at and 86. After all, you can go through a Seal the ring combination flexibly, or arrange other known flexible seals between the housing 50 and the jacket 54. The flexible seals can through recesses 79 in the cardan ring 55 are performed. The remaining forces exerted on the capsule ring by the flexible seals, in the direction of rotation or in the opposite direction, can be controlled by means of pressure balance springs 89 and 90 in the cardan ring, in the jacket, in the housing, or fully or partially balanced on the gimbal ring bolts

will.

BATH

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It is of course also possible to use individual parts of the

Piston valve
Machine like the FKJgSQ? or the like. to be provided in a modified embodiment cause effective sealing of the chambers against each other. The piston slides can also slide on the inner circumference of the casing with sliding shoes connected to them in an articulated or fixed manner.

The invention is only in the entirety of all features of the Claim 1 seen. No independent protection is claimed for the features of the subclaims.

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Claims (4)

• ■■ • J-r - 1 E 14-A 1401400 ref .; E 21 ^ 82 Ia / l ^ b New claims; 6.6.196? High-pressure rotary piston machine with a piston hub and piston valves, which are in slots of side walls encircling the piston hub movably mounted and are surrounded by a pendulum mounted jacket, which is located between the two side walls the piston boss extends, being between the piston boss and the shell, the side walls and the piston slides the working chambers of the machine preferably in two diametrically opposite one another Suction and pressure zones are formed, characterized in that that a) the slots for storing the piston valve in the Sidewalls that seal radially outward through the working chambers against the jacket, axially extending Ring walls are closed, b) axially outside the side walls closed to the outside compensation chambers are provided with Pressure medium for generating pressure fields counteracting the medium forces in the working chambers are deliverable. 2. Rotary piston machine according to claim 1, characterized in that the jacket ( ² Ml-) is provided with a spherical surface for pendulum mounting (Figs. 1 and 2) 8098 13/0 St. Documents (Art / _ύ ...— ^. ... ν ι sentence 3 desÄntterungB8es.v.4 _I 9 » 3. Rotary piston machine according to claim 1, characterized in that that the jacket (54) for pendulum mounting by means of a gimbal suspension (55) in one Support part (50) is suspended (Fig. 3). 4. Rotary piston machine according to claim 1 to 3, characterized in that the supply and / or discharge C ^ 7 or 8l) of the medium from a stationary housing (49) to or from the working chambers (42,43) through the pendulously mounted jacket (44,54) with the interposition of the pendulum movement of the jacket relative means permitting the fixed housing. 5- rotary piston machine according to claim 4, characterized in that that the inlet or outlet passing through the jacket (54) or a cardan ring (55) is flexible, e.g. with the interposition of the cardan ring (55) penetrating, on the machine housing (49) or on the jacket spherically supported sockets (83,85) or line parts, is executed. 809813 / 0U1