CN109404235B - Turbine type residual pressure power generation device capable of generating power by temperature difference energy - Google Patents
Turbine type residual pressure power generation device capable of generating power by temperature difference energy Download PDFInfo
- Publication number
- CN109404235B CN109404235B CN201811470363.6A CN201811470363A CN109404235B CN 109404235 B CN109404235 B CN 109404235B CN 201811470363 A CN201811470363 A CN 201811470363A CN 109404235 B CN109404235 B CN 109404235B
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- China
- Prior art keywords
- power generation
- end fixing
- fixing ring
- ring
- rear end
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- 238000010248 power generation Methods 0.000 title claims abstract description 37
- 230000006837 decompression Effects 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 230000003068 static effect Effects 0.000 claims abstract description 3
- 238000005452 bending Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 30
- 239000003345 natural gas Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
Abstract
The invention provides a turbine type residual pressure power generation device for generating power by using temperature difference energy, wherein two ends of the power generation device are connected with a gas transmission/oil transmission pipeline, and the power generation device comprises: the decompression cover is bowl-shaped, and two ends of the decompression cover are respectively connected with the gas transmission pipeline and the oil transmission pipeline; the turbine device is generally bowl-shaped and is arranged in the decompression cover, and comprises a front end fixed ring, a rear end fixed ring and a rotating ring arranged between the front end fixed ring and the rear end fixed ring, wherein the front end fixed ring and the rear end fixed ring are kept static and the rotating ring can rotate, and a plurality of guide blades distributed along the flow direction of the pipeline are arranged on the outer diameters of the front end fixed ring, the rear end fixed ring and the rotating ring; the generator is arranged in the decompression cover, and a motor driving shaft of the generator is connected with a rotating shaft of the rotating ring; the two ends of the thermoelectric power generation assembly are connected with the gas transmission/oil transmission pipelines at the two ends of the decompression cover. The invention can perform high-efficiency power generation in the pipeline decompression process.
Description
Technical Field
The invention relates to a residual pressure energy power generation device, in particular to a turbine type residual pressure power generation device capable of generating power by using temperature difference energy.
Background
Natural gas is an efficient, clean and low-carbon energy source, and is increasingly important in energy structures in China. The country explicitly proposes; by 2020, natural gas consumption in China can reach 10%. Accelerating the development of the natural gas industry is a necessary way for constructing a clean, low-carbon, safe and efficient modern energy system. In China, the method is also an effective way for improving the air quality and realizing green low-carbon life. Pipeline transportation is the most common and effective mode for long-distance transportation of natural gas, and gas transmission projects such as domestic western gas east transportation, sichuan gas east transportation, medium Russian natural gas pipelines, medium Burm natural gas pipelines and the like are successively built and put into operation. At present, the long-distance natural gas in China is mostly transported by a high-pressure pipeline, the pressure is above 10MPa, the transported high-pressure natural gas is reduced to a medium-pressure standard by a pressure regulating station and enters a city gas pipeline network, and the pressure is reduced to a low pressure by means of a pressure regulating station box for users to use. The natural gas releases a large amount of pressure energy in the pressure regulating process, and meanwhile, the temperature is rapidly reduced, so that a large amount of cold energy is generated. At present, the partial pressure difference can not be collected and applied by related processes, so that the great waste of resources is caused, and meanwhile, the rapid cooling threatens the safe operation of the pressure regulating equipment. The traditional natural gas turbine distributed energy system has the defects of unbalanced cold and hot loads, narrow range of unit operation conditions, low efficiency and the like. In practical application, the natural gas is designed and operated according to modes such as 'electricity by heat determination' or 'electricity by heat determination', and the like, and the comprehensive utilization efficiency and energy supply stability of the natural gas are low, so that the large-scale application of the natural gas is limited. Therefore, how to utilize new strategies and ideas to improve the comprehensive utilization efficiency of natural gas and the energy supply stability is a problem to be solved urgently at present.
The turbine type residual pressure power generation device for generating electricity by using the temperature difference energy has the following defects:
1. when the existing turbine type excess pressure power generation device capable of generating power by using the temperature difference energy utilizes the excess fluid pressure in the natural gas pipeline to generate power, the conversion efficiency is lower, the pressure loss is larger, the installation process of the excess pressure power generation device is more complicated, and the installation stability is poorer.
2. The existing turbine type residual pressure power generation device capable of generating power by using the temperature difference energy is difficult to generate power by using the temperature difference generated during residual pressure conversion, and the energy utilization efficiency of the residual pressure power generation device is reduced.
Disclosure of Invention
The invention provides a turbine type excess pressure power generation device capable of generating power by using temperature difference energy, which can be used for efficiently generating power by using energy of the turbine type excess pressure power generation device in the process of pipeline decompression. The specific scheme is as follows:
the utility model provides a turbine formula residual pressure power generation facility of thermoelectric energy electricity generation, power generation facility's both ends link to each other with gas-supply/oil pipeline, power generation facility includes:
the pressure reducing cover is bowl-shaped with one big end and one small end, and the two ends of the pressure reducing cover are respectively connected with the gas transmission pipeline and the oil transmission pipeline;
the turbine device is generally bowl-shaped and is arranged in the decompression cover, and comprises a front end fixed ring, a rear end fixed ring and a rotating ring arranged between the front end fixed ring and the rear end fixed ring coaxially, wherein the front end fixed ring and the rear end fixed ring are kept static and the rotating ring is rotatable, and a plurality of guide blades distributed along the flow direction of the pipeline are arranged on the outer diameters of the front end fixed ring, the rear end fixed ring and the rotating ring;
the generator is arranged in the decompression cover, and a motor driving shaft of the generator is connected with the rotating shaft of the rotating ring;
the two ends of the temperature difference energy power generation assembly are connected with the gas transmission/oil transmission pipelines at the two ends of the decompression cover.
Further, two ends of the decompression cover are respectively connected with the gas transmission/oil transmission pipeline through flanges.
Further, the front end fixing ring and the rear end fixing ring are respectively fixed in the decompression cover through the support flange, and the rotating shaft of the rotating ring penetrates through the shaft hole of the support flange to be connected with the motor driving shaft;
the support flange is equipped with support feet.
Further, the rotating shaft of the rotating ring is connected with the motor driving shaft through a coupler.
Further, the guide blades on the front end fixing ring, the rear end fixing ring and the rotating ring are arc-shaped blades;
the bending directions of the guide blades of the front end fixing ring and the rear end fixing ring are the same, and the bending direction of the guide blades of the rotating ring is opposite to the bending direction of the guide blades of the front end/rear end fixing ring.
The invention has the beneficial effects that:
1) The pipe wall type turbine residual pressure power generation turbine is adopted, the rotating turbine is installed between the fixed turbines at the two ends, and the generator input shaft is fixedly connected to one side of the rotating turbine, so that the residual pressure power generation device can efficiently absorb redundant pipeline pressure and convert the redundant pipeline pressure into electric energy, pressure loss is reduced, and the residual pressure power generation turbine is installed by only installing the fixed flange in the pipe wall, so that the installation is convenient and the installation stability is good.
2) And the temperature difference energy generating devices are arranged on the pipelines at the two sides of the residual pressure generating device, so that the temperature difference in the pipe wall is converted into electric energy, and the generating conversion efficiency of the device is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present 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 schematic diagram of a turbine type excess pressure power generation device for generating electricity by using temperature difference energy;
FIG. 2 is a schematic diagram of a turbine type excess pressure power generation device for thermoelectric power generation;
FIG. 3 is a cross-sectional view of a turbine type excess pressure power generation apparatus;
fig. 4 is a perspective view of the turbine device.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
In order to provide a thorough understanding of the present invention, detailed steps and detailed structures will be presented in the following description in order to explain the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.
The invention provides a turbine type residual pressure power generation device for generating power by using temperature difference energy, wherein two ends of the power generation device are connected with a gas transmission/oil transmission pipeline 5, and the power generation device comprises:
the decompression cover 11 is in a bowl shape with one big end and one small end, and the two ends of the decompression cover 11 are respectively connected with the gas transmission pipeline 5;
a turbine device 30, the turbine device 30 is generally bowl-shaped and is installed in the decompression housing 11, the turbine device 30 includes a front end fixing ring 30, a rear end fixing ring 50 and a rotating ring 40 between the front end fixing ring 30 and the rear end fixing ring 50, the front end fixing ring 30, the rear end fixing ring 50 are kept stationary and the rotating ring 40 is rotatable, and a plurality of guide blades distributed along the flow direction of the pipeline are arranged on the outer diameters of the front end fixing ring 30, the rear end fixing ring 50 and the rotating ring 40;
a generator 12 installed in the decompression housing 11, a motor driving shaft of the generator 12 being connected to a rotation shaft of the rotation ring 40;
and the two ends of the temperature difference energy power generation assembly 15 are connected with the gas/oil pipelines 5 at the two ends of the decompression cover 11.
In an alternative embodiment of the invention, the two ends of the pressure reducing cover 11 are respectively connected with the gas/oil pipeline 5 through flanges.
The end of the decompression cover 11 with larger opening end is provided with an end cover 4, and the end cover 4 is connected with the pressure reducing cover through a flange
In an alternative embodiment of the present invention, the front end fixing ring 30 and the rear end fixing ring 50 are respectively fixed in the pressure reducing cover 11 by support flanges, and the rotating shaft of the rotating ring 40 is connected to the motor driving shaft through the shaft holes of the support flanges. As shown in the figure, the front end fixing ring 30 is fixed at the front end thereof to the support flange 9, and the support flange 9 is provided with support legs 9a; likewise, the front end of the rear end fixing ring 50 is fixed to the support flange 10, and the support flange 10 is also provided with support legs (not shown).
The generator 12 is fixed in the pressure-reducing cover 11 by a motor fixing flange 13.
In an alternative embodiment of the invention, the shaft 8 of the rotary ring 40 is connected to the motor drive shaft via a coupling 14. The shaft 8 is mounted on the bearing 6 and is provided with a retaining ring 7.
In an alternative embodiment of the present invention, the guide vanes on the front end fixing ring 30, the rear end fixing ring 50, and the rotating ring 40 are all arc-shaped vanes; the bending directions of the guide blades of the front end fixing ring 30 and the rear end fixing ring 50 are the same, and the bending direction of the guide blades of the rotating ring 40 is opposite to the bending direction of the guide blades of the front end fixing ring 30/the rear end fixing ring 50.
Fig. 4 shows a schematic view of a turbine device in an embodiment, wherein the outer rings of the front end fixing ring 30, the rear end fixing ring 50 and the rotating ring 40 are respectively provided with an arc-shaped blade 1, an arc-shaped blade 2 and an arc-shaped blade 3, the arc-shaped blade 1 and the arc-shaped blade 3 are bent leftwards, and the arc-shaped blade 2 is bent rightwards. By adopting the design, when gas/liquid in the pipeline flows through the decompression cover, the guide directions of the arc-shaped blades 2, the arc-shaped blades 1 and the arc-shaped blades 3 at the front end and the rear end are opposite, so that the rotary ring 40 is driven to rotate at a high speed, the residual pressure generating device can efficiently absorb redundant pipeline pressure and convert the redundant pipeline pressure into electric energy, the pressure loss is reduced, and the residual pressure generating turbine only needs to be installed in the pipe wall by using the fixing flange, so that the installation is convenient and the installation stability is good.
In addition, it is known from the Joule-Thomson effect that the temperature drop varies with the pressure drop, typically a pressure drop of 1MPa and a temperature drop of 2 to 3 ℃. Therefore, the temperature difference energy generating components 15 are arranged on the pipelines 5 at the two sides of the decompression cover 11 to convert the temperature difference in the pipeline wall into electric energy, so that the generating conversion efficiency of the device is further improved.
The preferred embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention or modifications to equivalent embodiments without departing from the scope of the technical solution of the present invention, using the methods and technical contents disclosed above, without affecting the essential content of the present invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (3)
1. The utility model provides a turbine formula residual pressure power generation facility of thermoelectric energy electricity generation, its characterized in that, power generation facility's both ends link to each other with gas-supply/oil pipeline, power generation facility includes:
the pressure reducing cover is bowl-shaped with one big end and one small end, and two ends of the pressure reducing cover are respectively connected with the gas transmission/oil transmission pipeline through flanges;
the turbine device is generally bowl-shaped and is arranged in the decompression cover, the turbine device comprises a front end fixing ring, a rear end fixing ring and a rotating ring which are coaxial, the front end fixing ring and the rear end fixing ring are kept static, the rotating ring is rotatable, a plurality of guide blades distributed along the flow direction of the pipeline are arranged on the outer diameters of the front end fixing ring, the rear end fixing ring and the rotating ring, and the guide blades on the front end fixing ring, the rear end fixing ring and the rotating ring are arc-shaped blades; the bending directions of the guide blades of the front end fixing ring and the rear end fixing ring are the same, and the bending direction of the guide blade of the rotating ring is opposite to the bending direction of the guide blade of the front end/rear end fixing ring;
the generator is arranged in the decompression cover, and a motor driving shaft of the generator is connected with the rotating shaft of the rotating ring;
the two ends of the temperature difference energy power generation assembly are connected with the gas transmission/oil transmission pipelines at the two ends of the decompression cover.
2. The turbine type excess pressure power generation device for generating electricity by using the temperature difference energy according to claim 1, wherein the front end fixing ring and the rear end fixing ring are respectively fixed in the decompression cover through the support flange, and the rotating shaft of the rotating ring passes through the shaft hole of the support flange to be connected with the motor driving shaft;
the support flange is equipped with support feet.
3. The turbine type residual pressure power generation device for generating electricity by using temperature difference energy according to claim 1, wherein the rotating shaft of the rotating ring is connected with the driving shaft of the motor through a coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470363.6A CN109404235B (en) | 2018-12-04 | 2018-12-04 | Turbine type residual pressure power generation device capable of generating power by temperature difference energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470363.6A CN109404235B (en) | 2018-12-04 | 2018-12-04 | Turbine type residual pressure power generation device capable of generating power by temperature difference energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109404235A CN109404235A (en) | 2019-03-01 |
| CN109404235B true CN109404235B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811470363.6A Active CN109404235B (en) | 2018-12-04 | 2018-12-04 | Turbine type residual pressure power generation device capable of generating power by temperature difference energy |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110630335A (en) * | 2019-09-06 | 2019-12-31 | 北京市燃气集团有限责任公司 | Gas expansion device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278149A (en) * | 2011-06-25 | 2011-12-14 | 西安奥益达石油技术开发有限公司 | Generating equipment based on airflow action of natural gas production pipeline |
| CN202325702U (en) * | 2011-11-17 | 2012-07-11 | 重庆川然节能技术有限公司 | Natural gas pressure difference power generation system self-adapting to rear-end load change |
| CN105065066A (en) * | 2015-07-29 | 2015-11-18 | 华南理工大学 | Internal generating set of gas pipeline |
| CN105114132A (en) * | 2015-09-02 | 2015-12-02 | 陕西博尔能源科技有限公司 | Natural gas pipeline pressure reduction energy recovery set |
| CN106089614A (en) * | 2016-06-14 | 2016-11-09 | 华南理工大学 | A kind of temperature difference drives turbine |
| CN209164015U (en) * | 2018-12-04 | 2019-07-26 | 上海海洋大学 | A kind of turbine type excess pressure power generating device of thermal gradient energy power generation |
-
2018
- 2018-12-04 CN CN201811470363.6A patent/CN109404235B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278149A (en) * | 2011-06-25 | 2011-12-14 | 西安奥益达石油技术开发有限公司 | Generating equipment based on airflow action of natural gas production pipeline |
| CN202325702U (en) * | 2011-11-17 | 2012-07-11 | 重庆川然节能技术有限公司 | Natural gas pressure difference power generation system self-adapting to rear-end load change |
| CN105065066A (en) * | 2015-07-29 | 2015-11-18 | 华南理工大学 | Internal generating set of gas pipeline |
| CN105114132A (en) * | 2015-09-02 | 2015-12-02 | 陕西博尔能源科技有限公司 | Natural gas pipeline pressure reduction energy recovery set |
| CN106089614A (en) * | 2016-06-14 | 2016-11-09 | 华南理工大学 | A kind of temperature difference drives turbine |
| CN209164015U (en) * | 2018-12-04 | 2019-07-26 | 上海海洋大学 | A kind of turbine type excess pressure power generating device of thermal gradient energy power generation |
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| CN109404235A (en) | 2019-03-01 |
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