Cavitation-type rotary heat-generator

FIELD: heat production by means other than fuel combustion for premises water heating systems.

SUBSTANCE: proposed cavitation-type rotary heat-generator has housing provided with heated-liquid inlet and outlet and cylindrical surface carrying two coaxial rings of which one is fixed in position relative to housing and other ring is set in rotary motion by drive shaft disposed coaxially with rings. The latter are provided with radial holes disposed in plane perpendicular to axis of revolution. External coaxial ring is revolving and internal one is fixed in position relative to housing, clearance of 0.5 to 3 mm being provided between external revolving ring and internal cylindrical surface of housing. Steel disk is turned onto threaded end of drive shaft and external revolving ring is turned onto its rim. Drive shaft has spider with steel spokes tightened by means of claw nuts installed in depressions of external revolving ring. Threaded end of drive shaft mounts metal head with rimmed textolite disk attached thereto; this rimmed disk carries external revolving ring. Diameter of holes in internal fixed ring is larger by 1.5 - 3 times that that of holes in external revolving ring. Hole number in external revolving ring is other than that in internal fixed one.

EFFECT: augmented cavitation processes occurring during rotor revolution which enhances heating efficiency.

6 cl, 5 dwg

 

The invention relates to heat engineering, in particular to a device for receiving heat generated otherwise than as a result of combustion of fuels, and can be used in hot water heating systems, residential and industrial premises.

A device for heating the liquid friction method lies in the fact that heat is produced through friction for each other and/or liquid to solid, driven in a vessel with liquid, as described in SU # 1627790.

A disadvantage of this device is that due to the loss of energy efficiency of heating (the ratio of the number of produced thermal energy to mechanical or electrical energy consumed by the device) much less than unity.

A device for heating the liquid in which the efficiency of heat close to unity. This "hydrogena pump as described in US patent No. 5188090, author J.L.Griggs. This device consists of a metal stator having a cylindrical cavity closed by a flat cover. Inside the cavity of the stator mounted on the shaft, a cylindrical rotor, the peripheral cylindrical surface of which is uniformly plenty cylindrical radial recesses having a diameter of ˜ 10 mm and drilled to a depth approximately equal to the diameter of these holes. The gap between the cylindrical surface is Rostami rotor and stator is 0.5-1 mm The shaft is sealed with a seal that prevents leakage of the heated liquid from the device. In the end covers of the stator there are openings for supplying heated liquid to the device with one hand and tap it with the other hand.

The described device operates as follows. Through the inlet into the cavity of the stator serves water to be heated. It flows through the gap between the stator and the rotor and extends from the opposite side through the hole in the end cap of the device that is attached to the pipe for exhaust heated water to the consumer. The rotor device is put into rotation by an electric motor attached to the rotor shaft. During the rapid rotation of the rotor of the centrifugal forces tend to throw the water from the cylindrical recesses on the surface of the rotor (let's call them cells of Griggs). But the column of water in the cell Griggs is maintained by forces of wetting water to the metal surface of the cell. The confrontation of these two forces leads to the negative pressure in the liquid at the bottom cells of Griggs. In this case, the bottom cells arise cavitation bubbles, causing rupture of the water column in these cells. Under the action of centrifugal forces detached from the bottom cell of the column of water, being under tension, like a spring, ejected from the cavities and with great sarastovkaya in mating with the rotor inner cylindrical surface of the stator. The result is a shock wave, which enhances the cavitation processes in the gap between rotor and stator. With the rapid periodic contraction and expansion of cavitation bubbles in water is a strong heating of the gas mixture in them, and then all the water in the working gap.

The disadvantage of the described device is that the efficiency of heating is not very high. This is because after throwing portion of water from the cells of Griggs cell should be filled with a new portion of water from the working gap between the rotor and stator. And centrifugal force during rotation of the rotor to prevent water flow into these cell - cavities on the surface of the rotor. In the "rate" of cells (the number of "rounds" a trickle of water per unit of time) is not high.

This disadvantage is eliminated in another known device for heating the liquid, described in the patent RU №2116583, author Porsev EVGENIY This device consists of a cylindrical hollow body, in which there is fixed a stationary outer ring with radial holes in it, and coaxial him the rotating inner ring mounted on a shaft driven in rotation by an electric motor. In the inner ring has the same radial holes, as in the outer ring, and they are located in one plane, perpendi Blarney axis of rotation of the shaft. During the rotation of the inner ring centrifugal forces press the water into the radial holes of the ring to the inner surface of the outer ring, and when the holes in the rings are combined and become aligned as they move relative to each other, the water rushes into the holes of the outer ring. And then this water flow is abruptly interrupted when the holes in the rings during rotation of the rotor move on and stop being coaxial. As a result, in the described device is experiencing a strong surge of fluid, accompanied by cavitation. The most efficient water in this unit heats up when the frequencies of the pulsations of 3.8-4.8 kHz.

In this device, water flows in radial holes already not against the direction of the centrifugal force, as in the above-described hydrosonic pump of Griggs and direction of these forces, and they do not impede water flow, and, conversely, help.

A drawback of the known device is that the cavitation process is not very powerful, as the column of fluid in the radial holes of the rings is not terminated, but is clipped at offset holes during rotation of the inner ring. It is not possible to achieve in an interrupted stream of water high degree of vacuum necessary for the birth of cavitation bubbles, and does not allow to develop high efficiency the efficiency of heating of the working fluid and high temperature heating in a single pass of the liquid through the heat source.

The closest technical solution to the declared object is "rotary pump - generator described in patent RU No. 2159901. This device consists of a housing with a cylindrical cavity therein, in which are placed two coaxial rings installed. The outer ring is stationary relative to the housing, and an inner mounted on a shaft driven in rotation by an electric motor. In both rings have radial holes in the plane perpendicular to the axis of rotation. The orifices in the outer ring have a greater diameter than aligned with them holes in the inner ring. This ensures that the sudden expansion of the fluid flow passing through both holes, and enhances cavitation due to the fact that with the expansion of fluid flow pressure in it drops sharply and are born cavitation bubbles. In the result, the working fluid is heated more efficiently than in the device with the same holes.

It should be noted that if the gap between the rotating and stationary rings in the described known device prototype strive to make as small as possible, the gap between the stationary outer ring and the inner cylindrical surface of the housing in this device, as in the above-described devices-analogues, very large and approximately equal to the thickness of the ring. T is to made for to the working fluid emerging from the radial holes of the stationary outer ring, have not experienced significant resistance to its flow.

A drawback of the known device is that the cavitation process it is not powerful as the column of fluid in the radial holes is not terminated, but is clipped at offset holes during rotation of the inner ring. It does not conduct when the rotor to the emergence of a large depression in the plane of the cut-off of the liquid column in the radial holes that are not conducive for the emergence of a strong cavitation and does not allow you to develop a very high efficiency heat the working fluid.

The basis of the invention is to develop a device for heating liquids, in which, by changing the arrangement of the rotating and stationary rings and changes sequencing of radial holes larger and smaller diameter, the efficiency of heating the working fluid by increasing the cavitation processes.

The problem is solved in that cavitation rotary heat generator, consisting of a housing with inlet and outlet for the heated liquid having a cylindrical cavity, in which are placed two coaxial rings, one of which is replen stationary relative to the housing, and the other is driven from the drive shaft, coaxial with the rings, with the radial holes in these rings, located in the plane perpendicular to the axis of rotation, according to the invention the outer coaxial ring is rotating and the inner ring is stationary relative to the housing of the heat generator, and the gap between the rotating outer coaxial ring and the inner cylindrical surface of the housing ranges from 0.5 to 3 mm.

Bringing in external rotation coaxial rings of the generator leads to the emergence of radial holes of the ring centrifugal force tending to throw out these holes pillar of the working fluid. And when these openings are blocked from the inside surface of the inner stationary ring, due to the presence of forces wettability between the working fluid and the surface, there are large the tensile stresses in the fluid and vacuum it. In the liquid are born cavitation bubbles, which merge into the cavitation cavity, providing a gap of the liquid column in the radial hole of the rotating ring, as in the above described cell of Griggs. In the result, the working fluid with the power emitted from the radial holes in the rotating ring and hits in the cylindrical surface of the stationary the corps of the heat generator, causing a collision with the appearance of shock waves, amplifying the subsequent collapse of cavitation bubbles in the working fluid. In order for the energy of the jet of fluid emitted from the radial holes in a rotating outer ring, not lost in vain on the way from the hole to the surface of the body heat source, the gap between the rotating outer ring and the inner cylindrical surface of the housing serves to reduce to a value of from 0.5 to 3 mm, the Lower limit of 0.5 mm here due to the need to ensure free flow of the heated working fluid in this gap after leaving the radial holes of the rotating ring, and the upper limit to 3 mm due to the fact that at higher values of the gap a significant part of the kinetic energy of the jet of fluid emitted from the radial holes in the rotating ring is lost in overcoming friction forces on the surrounding liquid in the gap.

If hydrosonic pump of Griggs described above, filling the cell with a new portion of the working fluid after each "shot" stream of working fluid was carried out in the opposite direction to the centrifugal force, which slowed the process of filling, in the proposed device the filling of the working fluid radial the aqueous holes in the outer rotating ring after each "shot" of it is inside (in the direction from the axis of rotation) through the holes in the inner stationary ring, when these openings are aligned with the radial holes in the outer rotating ring. In this case the centrifugal forces are not impede the filling process, but rather accelerate it.

Also, according to the invention on the threaded end of the drive shaft is screwed a steel disk with a rim, on which is screwed on the outer rotating ring.

Also, according to the invention on the drive shaft is fixed to the hub, into which is inserted the needles holding the outer rotating ring.

Also, according to the invention on the threaded end of the drive shaft is screwed a metal nozzle, which are attached to printed disc with a rim, which is fixed to a rotating outer ring.

Also, according to the invention the diameter of the holes in the inner stationary ring 1.5-3 times greater than the diameter of the holes in the outer rotating ring.

The specified sizes of the diameters of the rings is required to ensure complete filling of the radial holes in the rotating outer ring until the overlap its wall inner stationary ring that allows the centrifugal forces to carry out the filling process until the end and thus increase the efficiency of the heat generator.

Also, according to the invention the number of holes in the outer rotating ring is not equal to the number from which Erste in the inner stationary ring.

When the number of radial holes in the outer rotating and the inner stationary ring the same, then all the "shots" streams of working fluid from all of these holes occur simultaneously at the time of overlap of the openings in the rotating outer ring solid wall of the inner ring. It's like shooting volleys of gun batteries that heat leads to unnecessary increased vibration, damaging its structure. Therefore, in the present invention, the number of holes in the outer rotating ring make unequal number of holes in the inner stationary ring. As a result, when the rotation of the outer ring appears out-of-sync moments matches its radial holes with the holes in the inner ring, "shots" streams of fluid are piecemeal, and reduced vibration of the structure.

Below the invention is disclosed in detail in the description with reference to the accompanying drawings, on which:

figure 1 depicts in the context of the proposed heat source;

figure 2 depicts a partial broken-out section from the section shown in figure 1;

figure 3 depicts the scheme of the mutual arrangement of inner and outer coaxial rings with an even number of radial holes in the outer ring and the odd internal;

figure 4 shows in section another variant of implementation of the Oia of the proposed boiler, in which the fastening of the outer ring to the rotating shaft by spokes;

figure 5 depicts in sectional view a third embodiment of the proposed generator, in which the fastening of the outer ring to the rotating shaft through the intermediate textolite disk.

We offer heat, are depicted in figure 1, consists of a welded steel support unit 1 attached with pins 2 to cast iron housing 3 unified legs of the centrifugal pump. This unified front has standard packing unit 4 mounted on the shaft 5, to the opposite end of which is connected to the motor, the driving shaft in rotation (not shown). Under the glands gland node on the shaft 5 is wearing a removable sleeve 6 of the abrasive-resistant bronze. The gap between the shaft 5 and sleeve 6 is sealed by a Teflon seal that presses the steel sleeve 7. On the threaded end of the shaft 5 is screwed a steel disk 8, the rim of which is screwed on the external thread (rotating) steel ring 9 of the heat generator. The ring 9 has one or more rows of radial holes located in a plane perpendicular to the axis of rotation. The diameter of these holes is approximately equal to the thickness of the ring 9. The number of rows of holes in the ring 9 can be anything, starting with one. The more rows, the more powerful the e heat source.

Coaxial ring 9 is stationary internal steel ring 10, which has the same number of rows of radial holes, and their axes are in the same planes with the axes of radial holes of the ring 9, perpendicular to the axis of the shaft 5. The radial holes in the ring 10 can do the same diameter with the holes in the ring 9, but it is better to do them 2-3 times larger than the holes in the ring 9.

The inner ring 10 is screwed into its threaded end into the steel disk 11. And he pressed tightening the studs 12 to the steel cylindrical housing 13 of the heat source in the cavity and which are rings 9 and 10. On top of the disk 11 placed intermediate ring 14 with holes for pins 12 and for passage of the working fluid. And on top of it stacked steel plate 15 boiler with welded in the center of the fitting 16 for exit of heated fluid. This plate 15 is welded thin-walled steel ring-partition 17 and a washer 18, which with its outer edge is almost in contact with the stationary ring 10.

This ring 10 has the same number of rows of radial holes 17, as in the ring 9, the diameter of the hole in the ring 10 1.5-3 times greater than the diameter of the hole in the ring 9.

The gap between the outer surface of the rotating ring 9 and the inner cylindrical surface of the housing 13 composition is employed, from 0.5 to 3 mm.

Studs 12 are not through all the holes in the cylindrical housing 13 and through one. Free holes (see figure 2) are used for the passage through them of a heated fluid, the movement of which in the drawings are arbitrarily shown by the arrows.

The number of radial holes in the rotating ring 9 is recommended to do not equal the number of holes in the stationary ring 10. Figure 3 shows how one of the embodiments, the scheme mutual arrangement of coaxial rings, which in the rotating ring 9 there is an even number of radial holes, and a stationary ring 10 - odd number of holes.

In welded base node 2 (figure 1) has a pipe 19 for supplying a heated liquid, and the disk 8 has openings 20 for the passage of a heated fluid. Between the reference node 1 and cast-iron body 4 installed heat-insulating ring 21 and the spacer 22. Under the stud nuts 2 stacked insulating washers 23.

We offer heat, are depicted in figure 4, differs from the heat source, depicted in figure 1 and 2, instead of the monolithic disk 8, the transmitting rotation from the shaft 5 to the outer ring 9, it has a steel spokes 24 (type of bike), inserted into the holes of the hub 25 and stretched with a tension screws 26 inserted into cavities drilled in the outer ring 9. Such cases which reduces the weight of the rotating parts of the generator (rotor) which leads to the reduction of the starting current of the motor, causing it to rotate.

The proposed heat source, depicted in figure 5, differs from the heat source, depicted in figure 1 and 2, instead of the monolithic disk 8, the transmitting rotation from the shaft 5 to the outer ring 9, it has a more complex site, consisting of a rim 27, made of duralumin and screwed on textolite disk 28, riveted by rivets to a metal nozzle 29 screwed on the threaded end of the shaft 5. Introduction to design printed disc 28 can reduce the care (and loss) of heat from the ring 9 on the shaft 5, so as PCB thermal conductivity hundreds of times less than that of metal.

The described device operates as follows. In the inlet pipe 19 serves for pipe working fluid to be heated (water, transformer oil, oil, antifreeze or other). She moves inside of the heat generator in the directions indicated by the arrows, and flows out through the outlet 16. Then include the motor, resulting in a rotation of the shaft 5. In the outer ring 9 starts to rotate, and the radial holes start to operate the centrifugal force tending to throw the liquid out of these holes to the inner surface of the housing 13 of the heat generator. But the forces wettability of gidroturbinnaja inner stationary ring 10 prevents the rupture of the liquid column in the radial hole of the ring 9, when this hole is covered from the inside with a solid surface of the ring 10. As a result, in the liquid column in the hole occurs, the vacuum is strongest at the bottom of the hole, and here are born cavitation bubbles constituting the cavitation cavity. It violates the continuity of the liquid column, and he breaks away from the bottom (from the surface of the inner stationary ring 10). As a result, the fluid force is thrown out of the radial holes and rushes to the inner surface of the housing 13 of the heat generator. When confronted with her streams of liquid shock wave is born, which contributes to the rapid collapse of cavitation bubbles in the liquid in the clearance between the cylindrical surfaces of the body 13 and the ring 9. When cavitation bubbles collapse, the temperature increased to thousands of degrees Celsius, causing the bubbles glow in the dark. (It's a well known phenomenon called sonoluminescence.)

After ejection of the liquid portion of the radial holes in the rotating ring 9 is filled in the holes with a new portion of the working fluid through a radial hole in the inner stationary ring 10, when the rotation of the ring 9 radial hole in it is combined with a radial hole in the ring 10. After filling the radial holes in the ring 9 operating the fluid in the hole again blocked on the inside by a continuous surface of the ring 10 during the rotation of the ring 9, and the above process is repeated. Due to the fact that the filling of the radial holes in the ring 9 comes from within (from the axis of rotation of the ring), but not outside, as it was in hydrosonic pump of Griggs, centrifugal forces do not interfere with the filling, and help him, and filling quickly. This is achieved by increasing the frequency of the emission portions of the working fluid from the radial holes and increasing the heat capacity of the heat generator.

1. Cavitation-rotary heat generator, consisting of a housing with inlet and outlet for the heated liquid having a cylindrical cavity, in which are placed two coaxial rings, one of which is stationary relative to the housing, and the other is driven from the drive shaft, coaxial with the rings, with the radial holes in these rings, located in the plane perpendicular to the axis of rotation, characterized in that the outer coaxial ring is rotating and the inner ring is stationary relative to the housing of the heat generator, and the gap between the rotating outer coaxial ring and the inner cylindrical surface of the housing ranges from 0.5 to 3 mm

2. Heat generator according to claim 1, characterized in that the threaded end of the drive shaft is screwed a steel disk with a rim, on which is screwed on the external is filing the ring.

3. Heat generator according to claim 1, characterized in that the drive shaft is fixed to the hub, into which is inserted a steel spokes, stretched with a tension nuts installed in recesses in the outer rotating ring.

4. Heat generator according to claim 1, characterized in that on the threaded end of the drive shaft is screwed a metal nozzle, which are attached to printed disc with a rim, which is fixed to a rotating outer ring.

5. Heat generator according to any one of claims 1 to 4, characterized in that the diameter of the holes in the inner stationary ring 1.5-3 times greater than the diameter of the holes in the outer rotating ring.

6. Heat generator according to any one of claims 1 to 4, characterized in that the number of holes in the outer rotating ring is not equal to the number of holes in the inner stationary ring.



 

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4 cl, 2 dwg

FIELD: chemical and oil industry.

SUBSTANCE: method comprises supplying methane-containing gas to the cavitation liquid (water), bringing the gas into contact with the cavitation liquid to produce exothermic reactions, withdrawing heat, and removing oxygen-organic compositions, highest hydrocarbons, and unreacted gases from the cooled liquid, and rising pressure of the purified liquid. The reaction between the methane-containing gas and cavitation liquid is carried out in the presence of catalyzers that contain carbides, nitrides, borides and oxides of metals. The unreacted gases are supplied to the methane-containing gas.

EFFECT: enhanced efficiency.

6 cl

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