CN214366225U - ORC power generation system rotor cooling and bearing lubrication integrated device - Google Patents
ORC power generation system rotor cooling and bearing lubrication integrated device Download PDFInfo
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- CN214366225U CN214366225U CN202121722795.9U CN202121722795U CN214366225U CN 214366225 U CN214366225 U CN 214366225U CN 202121722795 U CN202121722795 U CN 202121722795U CN 214366225 U CN214366225 U CN 214366225U
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Abstract
The utility model provides an ORC power generation system rotor cooling and bearing lubrication integrated device, which comprises a turbine expander, wherein a bearing is arranged between a generator rotor and the turbine expander; the turbo expander is connected with the condenser, a hot well of the condenser is connected with the working medium pump, the working medium pump is connected with the evaporator, and an outlet of the evaporator is connected with an inlet of the turbo expander; the outlet of the working medium pump is also connected with a cooling pipeline and a lubricating pipeline, one end of the cooling pipeline is connected with the working medium pump, and the other end of the cooling pipeline extends into the turbo expander; the lubricating pipeline comprises a liquid inlet pipe and a liquid discharge pipe, one end of the liquid inlet pipe is connected with the working medium pump, the other end of the liquid inlet pipe extends to the inner part of the turboexpander and is close to the bearing, one end of the liquid discharge pipe is communicated with the outer wall of the turboexpander and is close to the bearing, and the other end of the liquid discharge pipe is connected with the hot well. The utility model discloses cancelled conventional oil or fat lubricated mode, simplified the system, effectual solution ORC power generation system generator rotor cooling and the lubricated problem of bearing.
Description
Technical Field
The utility model belongs to the technical field of the power generation facility technique and specifically relates to a rotor cooling and bearing lubrication integrated device of ORC power generation system is related to.
Background
The Organic Rankine Cycle (ORC) power generation system can be used in the fields of geothermal energy, solar energy, biomass energy, industrial low-temperature waste heat recovery and the like, and the low-temperature heat source can be recycled as the working medium adopts organic mixtures such as refrigerants, hydrocarbons and siloxane with the boiling point lower than that of water. The ORC power generation system has the characteristic of modularization, can realize distributed energy supply, optimizes an energy consumption structure and promotes energy consumption on site.
For a conventional ORC power generation system, air or oil is usually adopted for cooling a generator rotor, but the two modes inevitably pollute working media during operation and reduce the efficiency of the system. The generator rotor bearing is lubricated by oil or grease, so that the system is required to provide an oil system with certain pressure or the grease is required to be replaced periodically, and meanwhile, the working medium is polluted. Therefore, in order to simplify the system, improve the system efficiency and reduce the operation cost, a reasonably designed generator rotor cooling and bearing lubrication type becomes the key to solve the problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an ORC power generation system rotor cooling and lubricated integrated device of bearing, the lubricated problem of effectual solution ORC power generation system generator rotor cooling and bearing.
The utility model provides an ORC power generation system rotor cooling and bearing lubrication integrated device, including turbo expander, condenser, working medium pump and evaporimeter, turbo expander is inside to be equipped with generator rotor and generator stator, generator rotor with turbo expander's expander wheel is connected, be equipped with the bearing between generator rotor and the turbo expander, turbo expander's gas vent is connected with the condenser; the hot well of the condenser is connected with the working medium pump; the outlet of the working medium pump is connected with the evaporator; the outlet of the evaporator is connected to the inlet of the turboexpander;
the outlet of the working medium pump is also connected with a cooling pipeline and a lubricating pipeline, one end of the cooling pipeline is connected with the working medium pump, and the other end of the cooling pipeline extends to the inside of the turboexpander and is close to the generator rotor;
the lubricating pipeline comprises a liquid inlet pipe and a liquid discharge pipe, one end of the liquid inlet pipe is connected with the working medium pump, the other end of the liquid inlet pipe extends to the position, close to the bearing, inside the turboexpander, one end of the liquid discharge pipe is communicated with the position, close to the bearing, of the outer wall of the turboexpander, and the other end of the liquid discharge pipe is connected with the hot well.
Further, an inlet regulating valve is arranged between the evaporator and the turboexpander.
Furthermore, one end of the cooling pipeline, which is positioned inside the turbo expander, is provided with an atomizing nozzle, and the atomizing nozzle is positioned close to the generator rotor.
Further, a flow valve is arranged between the cooling pipeline and the turboexpander.
Further, a pressure regulating valve 16 is arranged between the lubricating pipeline and the turboexpander.
Furthermore, the number of the lubricating pipelines is two, and the two lubricating pipelines are respectively arranged corresponding to the bearings on two sides of the turboexpander.
Further, the evaporator is connected with a heat source, and the heat source comprises geothermal energy, solar energy, biomass energy or industrial low-temperature waste heat.
Further, the pressure of the inlet regulating valve was set to 1.55 MPa.
Further, the pressure of the pressure regulating valve 16 is set to 0.6 MPa.
Further, the temperature of the generator rotor is 80-90 ℃.
The technical scheme of the utility model cancelled conventional oil or fat lubricated mode, simplified the system, reduced equipment complexity, reduced the running cost, effectual solution ORC power generation system generator rotor cooling and the lubricated problem of bearing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the turboexpander of the present invention;
description of reference numerals:
in the figure, 1-turbo expander, 2-condenser, 3-working medium pump, 4-evaporator, 5-generator rotor, 6-generator stator, 7-expander wheel, 8-bearing, 9-heat well, 10-inlet regulating valve, 11-heat source, 12-cooling pipeline, 13-flow valve, 14-liquid inlet pipe, 15-liquid discharge pipe and 16-pressure regulating valve;
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1 and 2:
an ORC power generation system rotor cooling and bearing lubrication integrated device comprises a turbo expander 1, a condenser 2, a working medium pump 3 and an evaporator 4, wherein a generator rotor 5 and a generator stator 6 are arranged inside the turbo expander 1, the generator rotor 5 is connected with an expander wheel 7 of the turbo expander 1, a bearing 8 is arranged between the generator rotor 5 and the turbo expander 1, and an exhaust port of the turbo expander 1 is connected with the condenser 2; the hot well 9 of the condenser 2 is connected with the working medium pump 3; the outlet of the working medium pump 3 is connected with the evaporator 4; the outlet of the evaporator 4 is connected to the inlet of the turboexpander 1; an inlet regulating valve 10 is provided between the evaporator 4 and the turbo expander 1. The pressure of the inlet regulator valve 10 was set to 1.55 MPa. The evaporator 4 is connected with a heat source 11, and the heat source 11 comprises geothermal energy, solar energy, biomass energy or industrial low-temperature waste heat.
The outlet of the working medium pump 3 is also connected with a cooling pipeline 12 and a lubricating pipeline, one end of the cooling pipeline 12 is connected with the working medium pump 3, and the other end of the cooling pipeline 12 extends to the position, close to the generator rotor 5, inside the turboexpander 1; the cooling line 12 is provided with an atomizer at the end inside the turboexpander 1, the atomizer being located close to the generator rotor 5. A flow valve 13 is provided between the cooling line 12 and the turboexpander 1.
The number of the lubricating pipelines is two, and the two lubricating pipelines are respectively arranged corresponding to the bearings 8 on the two sides of the turboexpander 1. A pressure regulating valve 16 is respectively arranged between the two lubricating pipelines and the turboexpander 1, and the pressure of the pressure regulating valve 16 is set to be 0.6 MPa. The lubricating pipeline comprises a liquid inlet pipe 14 and a liquid discharge pipe 15, one end of the liquid inlet pipe 14 is connected with the working medium pump 3, the other end of the liquid inlet pipe 14 extends to the position, close to the bearing 8, inside the turboexpander 1, one end of the liquid discharge pipe 15 is communicated with the position, close to the bearing 8, of the outer wall of the turboexpander 1, and the other end of the liquid discharge pipe 15 is connected with the hot well 9.
The utility model discloses a generating set adopts IPM (integrated Power module) integrated Power module, and it comprises high-speed turbo expander and high-speed generator, and the rotor that drives high-speed generator through the impeller of high-speed turbo expander rotates and generates electricity.
A part of working medium at the outlet of the working medium pump 3 is converted into high-temperature high-pressure steam through the evaporator 4, and then the high-temperature high-pressure steam is subjected to pressure regulation through the inlet regulating valve 10 and enters the turbo expander 1 to drive the expander wheel 7 to rotate, so that the generator rotor 5 is driven to generate electricity.
And a part of working medium cooling pipelines 12 at the outlet of the working medium pump 3 enter the turbo expander 1 after the pressure is adjusted by the flow valve 13, and liquid working medium is mixed with the exhaust gas of the turbo expander 1 by the atomizing nozzle to reduce the exhaust temperature, so that the exhaust gas can fully cool the generator rotor 5.
The liquid inlet pipe 14 of the other part of working medium lubrication pipeline at the outlet of the working medium pump 3 enters the front bearing 8 and the rear bearing 8 inside the turboexpander 1 after being regulated by a pressure regulating valve 16, a working medium well liquid discharge pipe 15 after lubricating and cooling the bearing 8 is connected with the hot well 9 of the condenser 2, the lubricated working medium is introduced into the hot well 9 of the condenser 2, and meanwhile, the heat on the bearing 8 is taken away, so that the bearing 8 is protected from over-temperature work.
Taking a certain 100kW ORC power generation system as an example, the inlet pressure of the IPM integrated power module is 1.55MPa, the inlet temperature is 180 ℃, the exhaust pressure is 0.265MPa, and the exhaust temperature is 130 ℃.
The liquid working medium of the hot well 9 of the condenser 2 is pressurized to 1.65MPa by the working medium pump 3, a part of the liquid working medium at the outlet of the working medium pump 3 is regulated to the pressure of 0.6MPa required by the rolling bearing by two liquid inlet pipes 14 of a lubricating pipeline through a pressure regulating valve 16, and meanwhile, the temperature of the liquid working medium is 45 ℃, so that the safe operation requirement of the rolling bearing is met; and the other part of liquid working medium at the outlet of the working medium pump 3 is led to the interior of the turboexpander 1 through the flow valve 13 through the cooling pipeline 12 to be used for cooling the generator rotor 5, and the temperature of the generator rotor 5 is maintained at about 85 ℃ by adjusting the opening degree of the flow valve 13, so that the requirement of safe operation is met.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The integrated device for cooling the rotor and lubricating the bearing of the ORC power generation system is characterized by comprising a turbo expander, a condenser, a working medium pump and an evaporator, wherein a generator rotor and a generator stator are arranged inside the turbo expander, the generator rotor is connected with an expander wheel of the turbo expander, and a bearing is arranged between the generator rotor and the turbo expander;
an exhaust port of the turboexpander is connected with the condenser, a hot well of the condenser is connected with the working medium pump, an outlet of the working medium pump is connected with the evaporator, and an outlet of the evaporator is connected with an inlet of the turboexpander;
the outlet of the working medium pump is also connected with a cooling pipeline and a lubricating pipeline, one end of the cooling pipeline is connected with the working medium pump, and the other end of the cooling pipeline extends to the inside of the turboexpander and is close to the generator rotor;
the lubricating pipeline comprises a liquid inlet pipe and a liquid discharge pipe, one end of the liquid inlet pipe is connected with the working medium pump, the other end of the liquid inlet pipe extends to the position, close to the bearing, inside the turboexpander, one end of the liquid discharge pipe is communicated with the position, close to the bearing, of the outer wall of the turboexpander, and the other end of the liquid discharge pipe is connected with the hot well.
2. An integrated ORC power generation system rotor cooling and bearing lubrication apparatus according to claim 1, wherein an inlet regulating valve is provided between said evaporator and said turboexpander.
3. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 1, wherein said cooling line has an atomizing spray at an end inside said turboexpander, said atomizing spray being located adjacent to said generator rotor.
4. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 1, wherein a flow valve is provided between said cooling line and said turboexpander.
5. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 1, wherein a pressure regulating valve is provided between said lubrication line and said turboexpander.
6. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 1, wherein said number of said lubrication lines is two, and said two lubrication lines are respectively disposed corresponding to said bearings on both sides of said turboexpander.
7. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 1, wherein said evaporator is coupled to a heat source comprising geothermal, solar, biomass, or industrial low temperature waste heat.
8. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 2, wherein said inlet regulator valve pressure is set to 1.55 MPa.
9. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 5, wherein said pressure regulating valve pressure is set to 0.6 MPa.
10. The integrated ORC power generation system rotor cooling and bearing lubrication device of claim 1, wherein said generator rotor temperature is between 80-90 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121722795.9U CN214366225U (en) | 2021-07-27 | 2021-07-27 | ORC power generation system rotor cooling and bearing lubrication integrated device |
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| CN202121722795.9U CN214366225U (en) | 2021-07-27 | 2021-07-27 | ORC power generation system rotor cooling and bearing lubrication integrated device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033504A (en) * | 2021-11-05 | 2022-02-11 | 重庆江增船舶重工有限公司 | Liquid working medium spray cooling system |
| TWI781860B (en) * | 2021-12-28 | 2022-10-21 | 財團法人工業技術研究院 | Turbo device and circulatory system |
-
2021
- 2021-07-27 CN CN202121722795.9U patent/CN214366225U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033504A (en) * | 2021-11-05 | 2022-02-11 | 重庆江增船舶重工有限公司 | Liquid working medium spray cooling system |
| CN114033504B (en) * | 2021-11-05 | 2024-05-03 | 重庆江增船舶重工有限公司 | Liquid working medium spray cooling system |
| TWI781860B (en) * | 2021-12-28 | 2022-10-21 | 財團法人工業技術研究院 | Turbo device and circulatory system |
| US11578615B1 (en) | 2021-12-28 | 2023-02-14 | Industrial Technology Research Institute | Turbo device and circulatory system |
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