CN110748392A - Large-scale organic working medium power generation device suitable for low-temperature excess pressure utilization - Google Patents
Large-scale organic working medium power generation device suitable for low-temperature excess pressure utilization Download PDFInfo
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- CN110748392A CN110748392A CN201910954110.4A CN201910954110A CN110748392A CN 110748392 A CN110748392 A CN 110748392A CN 201910954110 A CN201910954110 A CN 201910954110A CN 110748392 A CN110748392 A CN 110748392A
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- generator
- working medium
- organic working
- turbine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a large organic working medium power generation device suitable for low-temperature residual pressure utilization, which belongs to the technical field of organic working medium turbo expanders and comprises a generator part and a unit turbine part, wherein the generator part and the unit turbine part are assembled into a whole, the unit turbine part performs through-flow expansion work through an organic working medium, a rotor of the generator part is driven to rotate through the operation of the unit turbine part to generate power, and the generator part is positioned on the opposite side of the through-flow direction of the organic working medium, so that the integrated design of a turbine and a generator rotor is realized at ultralow exhaust temperature, and the purpose that the generator rotor is prevented from being influenced by the ultralow exhaust temperature is also solved.
Description
Technical Field
The invention belongs to the technical field of organic working medium turboexpanders, and particularly relates to a large organic working medium power generation device suitable for low-temperature excess pressure utilization.
Background
Natural gas is one of important energy applications in urban life as a clean energy with high calorific value. In the transportation process of the natural gas, in order to ensure long-distance transportation, the liquefied natural gas is firstly pressurized to a higher pressure (4-10 MPa), and then is transported to a gas utilization area through a pipeline. In the process of conveying to users, the pressure needs to be reduced to 0.1-0.4 MPa through the primary pressure reduction process to the secondary pressure reduction process, the partial pressure difference can be realized by adopting a pressure reducing valve, but the throttling loss is large; in addition, the expansion machine can be used for doing work through expansion, differential pressure energy is used for generating electricity, and gradient utilization of energy is achieved.
In the design of the organic working medium pressure reduction turbine with small power grade, the size of the turbine is not large; based on the convenience and cost consideration of the container loading and transportation of the equal-grade unit, the expander adopts the integrated design idea of the turbine and the generator rotor, namely the turbine and the generator share one rotor, the turbine and the generator adopt a single-layer cylinder design structure, the magnetic bearing is adopted to support the rotor, and the problem of working medium leakage is avoided. The temperature of the organic working medium subjected to decompression expansion by the expansion machine can reach about-30 ℃, the design and the type selection difficulty of the generator in the design scheme of the integrated rotor at the temperature is high, the internal structure (such as a stator winding) of the generator cannot normally operate and needs low-temperature protection mainly due to low temperature, but the problem of heat dissipation of the generator cannot be well solved while protection is carried out, and the generator can alarm and stop operation due to the fact that heat cannot be effectively dissipated; in addition, the cost is greatly increased. Therefore, the problem of low temperature operation environment of the generator needs to be solved.
Disclosure of Invention
In view of the above, in order to solve the above problems in the prior art, the present invention provides a large organic working medium power generation device suitable for low-temperature residual pressure utilization, so as to achieve the purpose of implementing an integrated design of a turbine and a generator rotor at an ultra-low exhaust temperature, and simultaneously solving the problem that the generator rotor is not affected by the ultra-low exhaust temperature.
The technical scheme adopted by the invention is as follows: the utility model provides a large-scale organic working medium power generation facility suitable for low temperature residual pressure utilizes, includes generator portion and unit turbine portion, generator portion and unit turbine portion assemble an organic whole, unit turbine portion through organic working medium through-flow in order to expand the acting, through the rotatory electricity generation of the rotor of unit turbine portion operation drive generator portion, and generator portion is located the back of the body one side of carrying on the back of the way of organic working medium through-flow trend.
Further, the integrated rotor is further included, and the generator part and the unit turbine part share the integrated rotor, so that the purposes of compact arrangement, cost reduction and convenience in overall transportation are achieved.
Further, the generator part comprises a generator shell and a generator stator arranged inside the generator shell; the turbine part of the unit comprises a turbine cylinder, and the turbine cylinder is provided with an air inlet cavity and an air outlet cavity; and the generator stator and the turbine cylinder are matched with the integrated rotor.
Further, a first radial bearing and a second radial bearing are respectively arranged at two ends of the integrated rotor and are respectively assembled on the generator shell and the inner cavity wall of the turbine cylinder so as to provide enough supporting acting force for the integrated rotor.
Further, the integrated rotor is provided with a thrust bearing which is positioned between the first radial bearing and the generator stator to balance the thrust of the integrated rotor.
Furthermore, the air inlet chamber and the air outlet chamber are communicated through an organic working medium, the air inlet temperature range of the air inlet chamber is between 0 ℃ and 100 ℃, and the safe operation environment of the generator can be ensured under the temperature condition.
Further, the turbine cylinder is of a single-layer cylinder structure, an end flange is further arranged at the end of the turbine cylinder, the generator shell, the turbine cylinder and the end flange are connected through bolts to form a closed shell, the closed shell has good sealing performance, and no organic working medium can be guaranteed to leak outwards in the operation process.
Furthermore, the turbine part of the unit is of a multi-stage axial flow turbine structure, and the capacity of the unit can be improved towards megawatt level by adopting the structure.
The invention has the beneficial effects that:
1. by adopting the large organic working medium power generation device suitable for low-temperature residual pressure utilization, the generator part and the unit turbine part are integrally designed, and meanwhile, the generator part is arranged on the opposite side of the through flow direction of the organic working medium, so that the influence of the ultralow exhaust temperature (-50-0 ℃) borne by a generator rotor can be effectively avoided, the normal operation of the internal structure (such as a stator winding) of the generator cannot be influenced by the low temperature, the problem that the generator cannot operate in a low-temperature environment is solved, and the cost of power generation of the large organic working medium is reasonably controlled.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a large organic working medium power generation device suitable for low-temperature residual pressure utilization, provided by the invention;
the drawings are labeled as follows:
1-a turbine cylinder, 2-a generator shell, 3-an integrated rotor, 4-a thrust bearing, 5-a first radial bearing, 6-a second radial bearing, 7-an end flange, 8-a generator stator, 9-an air inlet chamber, 10-an air outlet chamber, 11-a generator end and 12-a gas end.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the drawings in the embodiments are used for clearly and completely describing the technical scheme in the embodiments of the invention, and obviously, the described embodiments are a part of the embodiments of the invention, but not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
The embodiment specifically provides a large organic working medium power generation device suitable for low-temperature excess pressure utilization, which comprises a generator part and a unit turbine part, wherein the generator part generates power by rotating a rotor at a high speed and cutting magnetic lines of force of a generator; the turbine part of the machine set performs expansion work through the through flow of the organic working medium. The generator part is arranged in a conventional scheme, and the generator part is different from a conventional scheme in that a conventional thinking mode that a generator is arranged along the through-flow direction is adopted; the influence of ultralow exhaust temperature (-50-0 ℃) borne by the rotor of the generator part can be avoided; the generator part is designed on the opposite side of the through flow direction of the turbine part of the generator, under the condition that the air inlet temperature is not high (0-35 ℃), organic working medium led into the interior of the generator part cannot influence the generator, and meanwhile, a generator stator 8 and a generator rotor in the generator part can be cooled.
In order to realize the capacity of the unit to be improved towards megawatt level, the turbine part of the unit is of a multi-level axial flow turbine structure, the integrated rotor 3 is divided into a generator end 11 and a gas end 12, and the generator end 11 and the gas end 12 are respectively a component part of the generator part and the turbine part of the unit.
In order to realize the compact arrangement, the cost reduction and the convenient integral transportation of the whole power generation device, the generator part and the turbine part of the unit share the integral rotor 3, and the integral rotor 3 is assembled in an integral structure formed by assembling the generator part and the turbine part of the unit.
The generator part comprises a generator shell 2 and a generator stator 8 arranged in the generator shell 2; the turbine part of the unit comprises a turbine cylinder 1, and the turbine cylinder 1 is provided with an air inlet chamber 9 and an air outlet chamber 10; the generator stator 8 and the turbine cylinder 1 are respectively matched with a generator end 11 and a gas end 12 of the integrated rotor 3 correspondingly so as to respectively realize respective functions. Will turbine cylinder 1 adopts for single-deck cylinder structure and turbine cylinder 1's tip still is equipped with end flange 7, all through bolted connection in order to form confined shell between generator housing 2 and turbine cylinder 1, between turbine cylinder 1 and the end flange 7, at the operation in-process, can not have the problem that organic working medium reveals.
In order to provide enough supporting acting force for the integrated rotor 3, a first radial bearing 5 and a second radial bearing 6 are respectively arranged at two ends of the integrated rotor 3, and the first radial bearing 5 and the second radial bearing 6 are respectively assembled on the inner cavity walls of the generator shell 2 and the turbine cylinder 1. Meanwhile, in order to balance the rotor thrust during the movement of the rotor, a thrust bearing 4 is arranged on the integrated rotor 3, and the thrust bearing 4 is positioned between the first radial bearing 5 and the generator stator 8.
The air inlet chamber 9 and the air outlet chamber 10 are communicated through an organic working medium, the air inlet temperature range of the air inlet chamber 9 is between 0 ℃ and 100 ℃, and the safe operation environment of the generator can be ensured under the temperature condition; if the air inlet temperature is not high (0-35 ℃), the generator rotor (namely the generator end) and the generator stator 8 of the generator part can be cooled in an auxiliary way.
The working principle of the large organic working medium power generation device suitable for low-temperature excess pressure utilization provided by the embodiment is as follows:
organic working medium enters from an air inlet chamber 9 of the turbine cylinder 1, expands in a multistage axial flow turbine structure to do work, and then the integrated rotor 3 is pushed to rotate at a high speed, so that the generator rotor part of the integrated rotor 3 is enabled to cut magnetic lines of a generator to generate electricity, and the organic working medium gas subjected to temperature and pressure reduction is discharged through an exhaust chamber.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (8)
1. The large organic working medium power generation device is characterized by comprising a generator part and a unit turbine part, wherein the generator part and the unit turbine part are assembled into a whole, the unit turbine part does work through the through-flow expansion of an organic working medium, a rotor of the generator part is driven to rotate to generate power through the operation of the unit turbine part, and the generator part is positioned on one side of the organic working medium in the through-flow direction and the back of the organic working medium.
2. The large-scale organic working medium power generation device suitable for low-temperature residual pressure utilization according to claim 1, further comprising an integrated rotor, wherein the integrated rotor is shared by the generator part and the unit turbine part.
3. The large-scale organic working medium power generation device suitable for low-temperature residual pressure utilization according to claim 1, wherein the generator part comprises a generator shell and a generator stator arranged inside the generator shell; the turbine part of the unit comprises a turbine cylinder, and the turbine cylinder is provided with an air inlet cavity and an air outlet cavity; and the generator stator and the turbine cylinder are matched with the integrated rotor.
4. The large-scale organic working medium power generation device suitable for low-temperature residual pressure utilization according to claim 3, wherein a first radial bearing and a second radial bearing are respectively arranged at two ends of the integrated rotor, and the first radial bearing and the second radial bearing are respectively assembled on the generator shell and the inner cavity wall of the turbine cylinder.
5. The large-scale organic working medium power generation device suitable for low-temperature residual pressure utilization according to claim 4, wherein the integrated rotor is provided with a thrust bearing, and the thrust bearing is positioned between the first radial bearing and the generator stator.
6. The large organic working medium power generation device suitable for low-temperature residual pressure utilization according to claim 3, wherein organic working medium flows through the air inlet chamber and the air outlet chamber, and the air inlet temperature range of the air inlet chamber is 0-100 ℃.
7. The large-scale organic working medium power generation device suitable for low-temperature residual pressure utilization according to claim 3, wherein the turbine cylinder is of a single-layer cylinder structure, an end flange is further arranged at the end of the turbine cylinder, and a generator shell, the turbine cylinder and the end flange are connected through bolts to form a closed shell.
8. The large-scale organic working medium power generation device suitable for low-temperature residual pressure utilization according to claim 1, 2 or 3, wherein the turbine part of the unit is of a multistage axial-flow turbine structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910954110.4A CN110748392A (en) | 2019-10-09 | 2019-10-09 | Large-scale organic working medium power generation device suitable for low-temperature excess pressure utilization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910954110.4A CN110748392A (en) | 2019-10-09 | 2019-10-09 | Large-scale organic working medium power generation device suitable for low-temperature excess pressure utilization |
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| CN110748392A true CN110748392A (en) | 2020-02-04 |
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| CN201910954110.4A Pending CN110748392A (en) | 2019-10-09 | 2019-10-09 | Large-scale organic working medium power generation device suitable for low-temperature excess pressure utilization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788612A (en) * | 2022-12-12 | 2023-03-14 | 东方电气集团东方汽轮机有限公司 | Pipeline system and start-stop mode of differential pressure turboexpander set |
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| US20040088976A1 (en) * | 2002-08-20 | 2004-05-13 | Jens-Wolf Jaisle | Turbocharger with air-cooled magnetic bearing system |
| WO2009012842A2 (en) * | 2007-07-26 | 2009-01-29 | Conpower Energieanlagen Gmbh & Co Kg | Device and method for electricity generation |
| CN102422006A (en) * | 2009-05-06 | 2012-04-18 | 丹佛斯特波科尔压缩机有限公司 | Rankine cycle heat recovery methods and devices |
| CN107620611A (en) * | 2016-07-15 | 2018-01-23 | 西门子公司 | Integral type electricity generation system and electricity-generating method |
-
2019
- 2019-10-09 CN CN201910954110.4A patent/CN110748392A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040088976A1 (en) * | 2002-08-20 | 2004-05-13 | Jens-Wolf Jaisle | Turbocharger with air-cooled magnetic bearing system |
| WO2009012842A2 (en) * | 2007-07-26 | 2009-01-29 | Conpower Energieanlagen Gmbh & Co Kg | Device and method for electricity generation |
| CN102422006A (en) * | 2009-05-06 | 2012-04-18 | 丹佛斯特波科尔压缩机有限公司 | Rankine cycle heat recovery methods and devices |
| CN107620611A (en) * | 2016-07-15 | 2018-01-23 | 西门子公司 | Integral type electricity generation system and electricity-generating method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788612A (en) * | 2022-12-12 | 2023-03-14 | 东方电气集团东方汽轮机有限公司 | Pipeline system and start-stop mode of differential pressure turboexpander set |
| CN115788612B (en) * | 2022-12-12 | 2024-06-11 | 东方电气集团东方汽轮机有限公司 | Start-stop mode of differential pressure turbine expansion unit |
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Application publication date: 20200204 |
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