CN114033504B - Liquid working medium spray cooling system - Google Patents
Liquid working medium spray cooling system Download PDFInfo
- Publication number
- CN114033504B CN114033504B CN202111307603.2A CN202111307603A CN114033504B CN 114033504 B CN114033504 B CN 114033504B CN 202111307603 A CN202111307603 A CN 202111307603A CN 114033504 B CN114033504 B CN 114033504B
- Authority
- CN
- China
- Prior art keywords
- working medium
- main shaft
- speed generator
- atomizing
- cooling system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001816 cooling Methods 0.000 title claims abstract description 31
- 239000007921 spray Substances 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 238000002955 isolation Methods 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 238000000889 atomisation Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to the field of turbine expanders, in particular to a liquid working medium spray cooling system, wherein working medium expands in a turbine to do work to drive a main shaft of a high-speed generator to rotate, and in the working process, the temperature of a part contacted with the working medium is increased by the high-temperature working medium, so that a mechanical seal or a dry gas seal cannot be used after the working medium exceeds a certain degree, and the service life of a part connected with the turbine is not facilitated. Therefore, the atomizing nozzle can be started to spray an atomizing working medium into the atomizing cavity, the atomizing working medium absorbs the heat of the connecting body and the exhaust shell in the atomizing cavity, is partially gasified, forms a mixed wet working medium, then moves into the cooling cavity along the flow guide backboard, cools contacted parts, is discharged through the vent holes, isolates the high-temperature working medium of the main runner from the cooling cavity, reduces heat transfer, enters the main runner and the working medium to be mixed, and enters the next process flow, so that the cooling can be conveniently carried out to improve the service life.
Description
Technical Field
The invention relates to the field of turbine expanders, in particular to a liquid working medium spray cooling system.
Background
Aiming at industrial waste heat resources with higher temperature (higher than 300 ℃), the waste heat recovery by adopting the organic Rankine cycle power generation system has higher heat recovery efficiency, the high-temperature organic Rankine cycle power generation technology in China is not mature at present, and particularly a core component in the system, namely a high-temperature organic working medium expansion machine. The high temperature organic working medium expander is a core component of the organic rankine cycle system.
The high-temperature organic working medium expansion generating set adopting the integrated design of the expander-high-speed generator is the development trend of the internationally related technology. The integrated high-temperature organic working medium expansion generator set has a compact structure, and the high-temperature turbine and the low-temperature generator part sleeve are required to be effectively isolated in temperature and effectively cooled in a high-temperature and low-temperature contact area. In a high-temperature organic Rankine cycle power generation system, the system cannot provide a low-temperature gaseous cycle working medium for cooling, the organic working medium circulates in the system in a closed mode, and conventional air cooling or water cooling heat dissipation cannot meet the requirements.
Disclosure of Invention
The invention aims to provide a liquid working medium spray cooling system, which aims to better cool high-temperature connecting parts and realize effective temperature isolation between a high-temperature turbine and a low-temperature generator part sleeve.
In order to achieve the above purpose, the invention provides a liquid working medium spray cooling system, which comprises an exhaust shell, wherein the exhaust shell is provided with a main runner, a first high-speed generator main shaft is connected with the exhaust shell, an atomization cavity is formed between the first high-speed generator main shaft and the exhaust shell, a plurality of atomization nozzles are arranged on one side of the atomization cavity, a second high-speed generator main shaft is rotatably connected with the first high-speed generator main shaft and penetrates through the exhaust shell, a turbine is arranged on the second high-speed generator main shaft and is positioned in the exhaust shell, a mechanical seal seat is sleeved on the second high-speed generator main shaft and is positioned on one side of the atomization cavity, a vent hole is formed in a guide back plate, the guide back plate is fixed with the exhaust shell and is positioned on one side of the atomization cavity, and a cold air cavity is formed among the guide back plate, the second high-speed generator main shaft and the mechanical seal seat.
The atomizing nozzle and the center of the main shaft of the second high-speed generator are placed at a preset inclination angle.
The mechanical seal seat comprises a seat body and a temperature sensor, and the temperature sensor is arranged in the seat body.
The mechanical seal seat further comprises a first seal and an isolation oil seal, wherein the first seal is arranged between the main shaft of the second high-speed generator and the seat body, and the isolation oil seal is arranged on one side, close to the flow guide backboard, of the seat body.
The air guide backboard comprises a backboard body and an isolation air seal, and the isolation air seal is arranged between the backboard body and the turbine.
The flow guide backboard further comprises a separation plate, and a separation cavity is formed between the separation plate and the backboard body.
The atomizing nozzle comprises a nozzle body and an automatic regulating valve, and the automatic regulating valve is connected with the nozzle body.
According to the liquid working medium spray cooling system, working medium expands in the turbine to do work to drive the main shaft of the high-speed generator to rotate, and in the working process, the temperature of a part contacted with the working medium is increased, so that a mechanical seal or a dry gas seal cannot be used after the working medium exceeds a certain degree, and the service life of a part connected with the turbine is not facilitated. Therefore, the atomizing nozzle can be started to spray an atomizing working medium into the atomizing cavity, the atomizing working medium absorbs the heat of the connecting body and the exhaust shell in the atomizing cavity, is partially gasified, forms a mixed wet working medium, then moves into the cooling cavity along the flow guide backboard, cools contacted parts, is discharged through the vent holes, isolates the high-temperature working medium of the main runner from the cooling cavity, reduces heat transfer, enters the main runner and the working medium to be mixed, and enters the next process flow, so that the cooling can be conveniently carried out to improve the service life.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a liquid working fluid spray cooling system of the present invention;
FIG. 2 is an enlarged view of a portion of detail A of FIG. 1;
FIG. 3 is a block diagram of an atomizing nozzle of the present invention;
Fig. 4 is an exploded view of the baffle backplate.
1-Exhaust shell, 2-first high-speed generator main shaft, 3-second high-speed generator main shaft, 4-turbine, 5-mechanical seal seat, 6-air guide back plate, 7-atomizing nozzle, 11-main runner, 21-atomizing cavity, 51-seat body, 52-temperature sensor, 53-first seal, 54-isolation oil seal, 61-vent hole, 62-cold air cavity, 63-back plate body, 64-isolation air seal, 65-isolation cavity, 66-isolation plate, 71-nozzle body and 72-automatic regulating valve.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, in the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 4, the present invention provides a liquid working medium spray cooling system:
the novel high-speed generator comprises an exhaust shell 1, wherein the exhaust shell 1 is provided with a main runner 11, a first high-speed generator main shaft 2 is connected with the exhaust shell 1, an atomization cavity 21 is formed between the first high-speed generator main shaft 2 and the exhaust shell 1, a plurality of atomization nozzles 7 are arranged on one side of the atomization cavity 21, a second high-speed generator main shaft 3 is rotatably connected with the first high-speed generator main shaft 2 and penetrates through the exhaust shell 1, a turbine 4 is sleeved on the second high-speed generator main shaft 3 and is positioned in the exhaust shell 1, a mechanical sealing seat 5 is sleeved on the second high-speed generator main shaft 3 and is positioned on one side of the atomization cavity 21, a vent hole 61 is formed in a guide backboard 6, the guide backboard 6 is fixed with the exhaust shell 1 and is positioned on one side of the atomization cavity 21, and a cold air cavity 62 is formed between the second high-speed generator main shaft 3 and the mechanical sealing seat 5.
In this embodiment, the working medium expands and works in the turbine 4 to drive the first high-speed generator main shaft 2 to rotate, and in the working process, the high-temperature working medium causes the temperature of the component contacted with the working medium to rise, and after exceeding a certain degree, the working medium causes the mechanical seal or the dry gas seal to be unusable, which is unfavorable for the service life of the component connected with the turbine. Therefore, the atomizing nozzle 7 can be started to spray the atomized working medium into the atomizing cavity 21, the atomized working medium absorbs the heat of the connector 3 and the exhaust shell 1 in the atomizing cavity 21, is partially gasified, forms mixed wet working medium, then moves into the cold air cavity 62 along the flow guide backboard 6 to cool contacted parts, is discharged through the vent holes, isolates the high-temperature working medium of the main runner from the cooling cavity, reduces heat transfer, enters the main runner to be mixed with the working medium, and enters the next process flow, so that the cooling can be conveniently carried out to improve the service life.
Further, the atomizing nozzle 7 and the center of the main shaft 3 of the second high-speed generator are placed at a preset inclination angle.
In this embodiment, the atomizing nozzle 7 is disposed at an inclined angle such that the mixed wet working medium rotates in the circumferential direction in the atomizing chamber 21 and enters the cooling chamber to enhance the cooling effect.
Further, the mechanical seal seat 5 includes a seat body 51 and a temperature sensor 52, and the temperature sensor 52 is disposed in the seat body 51.
In this embodiment, the temperature sensor 52 is used to monitor the temperature of the cooling cavity, so that the control of the atomizer can be facilitated.
Further, the mechanical seal seat 5 further includes a first seal 53 and an isolation oil seal 54, the first seal 53 is disposed between the second high-speed generator main shaft 3 and the seat body 51, and the isolation oil seal 54 is disposed on a side of the seat body 51 close to the flow guiding backboard 6.
In this embodiment, the first seal 53 is used to seal the working fluid, and the sealing effect can be improved by the isolation oil seal 54.
Further, the flow guiding back plate 6 includes a back plate body 63 and an isolation gas seal 64, and the isolation gas seal 64 is disposed between the back plate body 63 and the turbine 4.
In this embodiment, the isolation gas seal 64 may seal the gap where the baffle 6 contacts the turbine 4, so as to avoid the leakage of the working medium from the gap.
Further, the baffle plate 6 further includes a partition plate 66, and the partition plate 66 and the back plate body 65 form a partition cavity 65.
In this embodiment, the isolation cavity 65 can isolate the main flow channel 11 from the cold air cavity 62, so that the heat conduction efficiency can be reduced, and the cooling effect can be enhanced.
Further, the atomizing nozzle 7 includes a nozzle body 71 and an automatic regulating valve 72, and the automatic regulating valve 72 is connected to the nozzle body 71.
In this embodiment, the spraying amount of the nozzle body 71 may be automatically adjusted by the automatic adjusting valve 72 according to the temperature condition monitored by the temperature sensor 52, so that the temperature may be controlled within a certain range, and the use is more convenient.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (7)
1. A liquid working medium spray cooling system is characterized in that,
Including the exhaust shell, the exhaust shell has the sprue, first high-speed generator main shaft with the exhaust shell is connected, first high-speed generator main shaft with form the atomizing chamber between the exhaust shell, a plurality of atomizing nozzles set up one side in atomizing chamber, the second high-speed generator main shaft with first high-speed generator main shaft rotates to be connected, and passes the exhaust shell, the turbine is established on the second high-speed generator main shaft, and be located in the exhaust shell, the mechanical seal seat cover is established on the second high-speed generator main shaft, and be located one side in atomizing chamber, the water conservancy diversion backplate has the air vent, the water conservancy diversion backplate with the exhaust shell is fixed, and be located one side in atomizing chamber, the water conservancy diversion backplate the second high-speed generator main shaft the mechanical seal seat forms the cold air chamber between.
2. A liquid working fluid spray cooling system as claimed in claim 1, wherein,
The atomizing nozzle and the center of the main shaft of the second high-speed generator are placed at a preset inclination angle.
3. A liquid working fluid spray cooling system as claimed in claim 1, wherein,
The mechanical seal seat comprises a seat body and a temperature sensor, and the temperature sensor is arranged in the seat body.
4. A liquid working fluid spray cooling system as claimed in claim 3, wherein,
The mechanical seal seat further comprises a first seal and an isolation oil seal, wherein the first seal is arranged between the main shaft of the second high-speed generator and the seat body, and the isolation oil seal is arranged on one side, close to the flow guide backboard, of the seat body.
5. A liquid working fluid spray cooling system as claimed in claim 1, wherein,
The air guide backboard comprises a backboard body and an isolation air seal, and the isolation air seal is arranged between the backboard body and the turbine.
6. A liquid working fluid spray cooling system as recited in claim 5, wherein,
The flow guide backboard further comprises a separation plate, and a separation cavity is formed between the separation plate and the backboard body.
7. A liquid working fluid spray cooling system as claimed in claim 3, wherein,
The atomizing nozzle comprises a nozzle body and an automatic regulating valve, and the automatic regulating valve is connected with the nozzle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307603.2A CN114033504B (en) | 2021-11-05 | 2021-11-05 | Liquid working medium spray cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307603.2A CN114033504B (en) | 2021-11-05 | 2021-11-05 | Liquid working medium spray cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114033504A CN114033504A (en) | 2022-02-11 |
| CN114033504B true CN114033504B (en) | 2024-05-03 |
Family
ID=80136502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111307603.2A Active CN114033504B (en) | 2021-11-05 | 2021-11-05 | Liquid working medium spray cooling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN114033504B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10357440A1 (en) * | 2003-02-05 | 2004-09-09 | Hühne, Erwin Dieter | Low temperature high speed flame spraying system for thermally spraying powdered materials comprises a mixing chamber having an injection system for non-combustible gases and/or water downstream of a combustion chamber |
| DE102007033405A1 (en) * | 2007-07-18 | 2009-01-22 | IBEDA Sicherheitsgeräte und Gastechnik GmbH & Co. KG | Chilled high speed-flame spray unit for use in e.g. aeronautical-aerospace industry, has annular space supplied with cladding cool gas flow from non-combustible cool and atomizing gas, where cooling medium is provided for mixing with gas |
| CN103670626A (en) * | 2013-12-27 | 2014-03-26 | 天津大学 | Two-stage expansion jet type waste heat recovery system of internal combustion engine |
| CN103746493A (en) * | 2014-01-07 | 2014-04-23 | 天津大学 | Main shaft sealing device of high-speed turbine-generator applied to ORC (organic Rankine cycle) |
| CN107476833A (en) * | 2017-06-14 | 2017-12-15 | 南京航空航天大学 | The self cooled magnetic suspension turbine expansion generator of zero leakage and System and method for |
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| CN113565586A (en) * | 2021-08-27 | 2021-10-29 | 北京工业大学 | Closed expansion unit generator exhaust-spray cooling system for organic Rankine cycle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US9376933B2 (en) * | 2011-04-29 | 2016-06-28 | Leonard M. Andersen | Apparatus for distributing fluid into a gas turbine |
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2021
- 2021-11-05 CN CN202111307603.2A patent/CN114033504B/en active Active
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| DE10357440A1 (en) * | 2003-02-05 | 2004-09-09 | Hühne, Erwin Dieter | Low temperature high speed flame spraying system for thermally spraying powdered materials comprises a mixing chamber having an injection system for non-combustible gases and/or water downstream of a combustion chamber |
| DE102007033405A1 (en) * | 2007-07-18 | 2009-01-22 | IBEDA Sicherheitsgeräte und Gastechnik GmbH & Co. KG | Chilled high speed-flame spray unit for use in e.g. aeronautical-aerospace industry, has annular space supplied with cladding cool gas flow from non-combustible cool and atomizing gas, where cooling medium is provided for mixing with gas |
| CN103670626A (en) * | 2013-12-27 | 2014-03-26 | 天津大学 | Two-stage expansion jet type waste heat recovery system of internal combustion engine |
| CN103746493A (en) * | 2014-01-07 | 2014-04-23 | 天津大学 | Main shaft sealing device of high-speed turbine-generator applied to ORC (organic Rankine cycle) |
| CN107476833A (en) * | 2017-06-14 | 2017-12-15 | 南京航空航天大学 | The self cooled magnetic suspension turbine expansion generator of zero leakage and System and method for |
| CN207194963U (en) * | 2017-08-25 | 2018-04-06 | 谢竞宁 | Turbine |
| CN108590778A (en) * | 2018-01-15 | 2018-09-28 | 重庆江增船舶重工有限公司 | A kind of axial-flow type organic working medium turbo-expander |
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| CN110966051A (en) * | 2019-11-22 | 2020-04-07 | 中国科学院理化技术研究所 | Turbine expansion machine |
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| CN214366225U (en) * | 2021-07-27 | 2021-10-08 | 北京前沿动力科技股份有限公司 | ORC power generation system rotor cooling and bearing lubrication integrated device |
| CN113565586A (en) * | 2021-08-27 | 2021-10-29 | 北京工业大学 | Closed expansion unit generator exhaust-spray cooling system for organic Rankine cycle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114033504A (en) | 2022-02-11 |
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