The cooling system of an electric machine

 

The invention relates to electrical engineering and can be used for cooling generators and motors closed execution. The cooling system of an electric machine includes a source of compressed air with a pressure pipe, which divides a vortex tube having the energy separation of the two cavity - hot and cold, and the heat pipe. The heat pipe is made in the form of a shaft of the electric machine and is equipped with a distribution tube having openings in its evaporative zone. The condensation end of the distribution tube is placed in the cold cavity of the vortex tube. The use of the invention allow for efficient and uniform cooling of the electric machine, allowing you to renounce the use of flammable hydrogen cooling. 3 Il.

The invention relates to electrical engineering and can be used for cooling generators and motors closed execution.

Known cooling system of an electric machine, comprising a shaft, a stator, a rotor, evaporating cooling fluid circulating in the sealed cavity of the shaft (see Dan achieving specified below technical result when using the known system, is that in the known system, the exhaust heat from the rotor of the electrical machinery is not effective and there is an uneven distribution of the coolant along the length of the rotor, which leads to the formation of zones of overheating, and consequently, in emergency situations due to deterioration of the insulation and reduce the strength of elements of electric machines. For cooling generators used videodrone cooling, which leads to high operating and capital costs for the construction and maintenance of the devices, and also to prevent fires.

The closest system to the same destination to the claimed invention by the combination of features is the installation for cooling a stand-alone object, comprising a source of compressed air (ICB) pressure pipe, which divides a vortex tube (DWT) with the energy separation of the two cavity - hot and cold, isolated object (IO), heat pipe (TP), evaporative end of which is placed directly in the cooled stand-alone object, and the condensing end of the heat pipe is inserted through the Central aperture in cooperation is essential is m, impede the achievement of the specified lower technical result when using the known installation, adopted for the prototype is that it is not possible intensive and uniform cooling of a rotating object (the rotor of the electric machine). The existing prototype is not possible to ensure effective and uniform cooling of the electric machine, and therefore, this installation is unacceptable.

The invention consists in providing efficient and uniform cooling of the electric machine, allowing you to renounce the use of flammable hydrogen cooling. The technical result - ensuring efficient and uniform cooling of the electric machine, allowing you to renounce the use of flammable hydrogen cooling.

This technical result in the implementation of the invention is achieved in that in the cooling system of an electric machine, containing a source of compressed air (ICB) pressure pipe, which divides a vortex tube (DWT) with the energy separation of the two cavity - hot and cold, the peculiarity lies in the fact that, as the heat pipes applied hollow public in the evaporation zone of the heat pipe (hollow shaft).

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources, and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant had not discovered similar, characterized by signs, identical with all the essential features of the claimed invention. The definition from the list of identified unique prototype as the most similar essential features of the analog revealed the essential with respect to the apparent result of the distinctive features stated in the installation set forth in the claims. Therefore, the claimed invention meets the condition of “novelty.”

To verify compliance of the claimed invention the term “inventive step”, the applicant conducted an additional search of the known solutions to identify signs that match the distinctive features of the prototype of the characteristics of the claimed device.

The search results showed that the claimed invention not apparent to the expert in the obvious way from the prior art because the prior art defined by the applicant, not the influence envisage what Licata, in particular, the claimed invention does not provide for the following conversions:

- addition of known means of any known part (s), attached (connected) to it according to certain rules to achieve a technical result, in respect of which it is the effect of such additions;

- replacement of any part (s) of the other known means known part to achieve a technical result, in respect of which it is the effect of such a change;

- the exclusion of any part (element) means while the exclusion of its functions and the achievement of a result of such exclusion (simplification, weight, dimensions, material consumption, higher reliability, etc.);

- increasing the number of identical elements to enhance the technical result due to the presence in the vehicle is of such elements;

- execution of a known drug or its part (s) of a known material to achieve a technical result due to the known properties of this material;

- creation of tools, consisting of well-known parts, the choice of which and the relationship between them Khujand the local properties of the parts of this tool and the relationships between them.

The described invention is not based on the change of the quantitative characteristic (s), the submission of such evidence in the relationship, or change its appearance. This refers to the case when the known fact of the influence of each of these features on the technical result, and the new values for these characteristics or their relationship could be obtained from the known dependency relationships.

Therefore, the claimed invention meets the condition of “inventive step”.

The drawings show:

in Fig.1 - analogue;

in Fig.2 - prototype;

in Fig.3 - the proposed cooling system of an electric machine.

Information confirming the ability of the invention to provide the above result are as follows.

The cooling system of an electric machine includes a source of compressed air 1 with the pressure pipe 2, which divides a vortex tube 3, having the energy separation of the two cavity - hot 4 and cold 5, the hollow shaft of the electric machine 6 with evaporative zone 7, the distribution tube 8 with a condensation end 9 and holes 10, the boiling liquid 11 and the condensate 12.

The plant is operated as follows.

Compressed air from and what Tata energy of the flow separation are formed two cavity - hot 4 and cold 5. The rotor of the electric machine is cooled due to the fact that the shaft 6 is made hollow and works as a heat pipe, inside of which is under vacuum is liquid. Moreover, the boiling liquid layer 11 is located on the periphery of the inner surface of the shaft due to centrifugal forces. Pairs of distribution pipe 8 moves to its condensing the end of 9, cooled in cold cavity 5 which divides the vortex tube 3. The resulting condensate flows by distribution pipe 8 and evenly sprayed on the length of the shaft through the holes 10 located on the distribution pipe 8 into the evaporation zone 7 heat pipes (hollow shaft) 6.

Thus, the above data confirm that the implementation of the use of the claimed install the following cumulative conditions:

the tool embodying the claimed system in its implementation, is intended for use in industry, namely in electrical engineering, and can be used for cooling generators and motors closed execution;

- for the claimed system, as it is described in the independent clause sets out the claims, confirmed the possibility of its olewale the claimed invention in its implementation, able to achieve perceived by the applicant of the technical result.

Therefore, the claimed invention meets the condition of “industrial applicability”.

Claims

Cooling system electrical machine containing a source of compressed air with a pressure pipe, which divides a vortex tube having the energy separation of the two cavity - hot and cold, and the heat pipe, wherein the heat pipe is made in the form of a shaft of the electric machine and is equipped with a distribution tube having openings in its evaporative zone, with the condensation end of the distribution tube is placed in the cold cavity of the vortex tube.

 

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