CN105888845B - A kind of natural gas differential pressure cold energy utilization device - Google Patents
A kind of natural gas differential pressure cold energy utilization device Download PDFInfo
- Publication number
- CN105888845B CN105888845B CN201610406422.8A CN201610406422A CN105888845B CN 105888845 B CN105888845 B CN 105888845B CN 201610406422 A CN201610406422 A CN 201610406422A CN 105888845 B CN105888845 B CN 105888845B
- Authority
- CN
- China
- Prior art keywords
- natural gas
- heat exchanger
- voltage stabilization
- regulation device
- expanding machine
- 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
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000003345 natural gas Substances 0.000 title claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 20
- 230000033228 biological regulation Effects 0.000 claims abstract description 18
- 230000006641 stabilisation Effects 0.000 claims abstract description 16
- 238000011105 stabilization Methods 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000012806 monitoring device Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 6
- 239000002737 fuel gas Substances 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
-
- 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
- F01D17/00—Regulating or controlling by varying flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/16—Cooling of plants characterised by cooling medium
- F02C7/18—Cooling of plants characterised by cooling medium the medium being gaseous, e.g. air
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to fuel gas transmission and technical field of power generation, more particularly to a kind of natural gas differential pressure cold energy utilization device, including the expanding machine connected with natural gas air inlet pipe road, after natural gas expands in expanding machine, voltage stabilization and regulation device is entered by heat exchanger, natural gas exchanges heat in heat exchanger with the air inlet of the compressor of gas turbine, natural gas enters combustion chamber or gas fired-boiler through voltage stabilization and regulation device, regulating valve II is provided with the natural gas line of expanding machine front end, the bypass duct with voltage stabilization and regulation device is provided with natural gas air inlet pipe road, regulating valve I is provided with bypass duct.Relative to the prior art, the present invention utilizes the cryogenic natural gas body of expander outlet, is exchanged heat by heat exchanger and the air needed for gas turbine blower, can utilize the cold energy of expander outlet, the intake air temperature of gas turbine blower can be reduced again, improve combustion engine efficiency.
Description
Technical field
The present invention relates to fuel gas transmission and technical field of power generation, is filled more particularly to a kind of natural gas differential pressure cold energy use
Put.
Background technology
Gradually build up introduction with overseas liquefied natural gas with west_east gas transmission pipeline, and national energy-saving emission reduction will
Ask, natural gas gradually replaces coal, become the main fuel of power plant as a kind of clean energy resource.
Plant gas natural gas is typically from pipeline, urban gate station or LNG gasification, and bleed pressure is higher, combustion engine, combustion gas
Fuel gas inlet pressure needed for the power plant such as boiler is relatively low, and existing frequently-used turbine power generation is typically before natural gas enters expanding machine
Natural gas is heated, in vain waste this part cold energy, in heating process, waste thermal energy and electric energy.
The content of the invention
The technical problem to be solved in the present invention is：Turbine power generation is that natural gas is added before natural gas enters expanding machine
Heat, wastes the cold energy of natural gas, thermal energy and electric energy needed for heating is wasted, to solve the above problems, providing a kind of day
Right gas differential pressure cold energy utilization device.
The purpose of the present invention is what is realized in the following manner：
A kind of natural gas differential pressure cold energy utilization device, including the expanding machine connected with natural gas air inlet pipe road, natural gas exist
After being expanded in expanding machine, voltage stabilization and regulation device, compressor of the natural gas in heat exchanger with gas turbine are entered by heat exchanger
Air inlet heat exchange, natural gas enters combustion chamber or gas fired-boiler, the natural gas line in expanding machine front end through voltage stabilization and regulation device
On be provided with regulating valve II, the bypass duct with voltage stabilization and regulation device is provided with natural gas air inlet pipe road, is set on bypass duct
It is equipped with regulating valve I.
The temperature monitoring device for adjusting outlet pressure of expansion machine is provided between expanding machine and heat exchanger.
Temperature-sensing valve is provided between heat exchanger and voltage stabilization and regulation device, heat exchanger and voltage stabilization and regulation device when temperature-sensing valve is closed
Connection, temperature-sensing valve are provided with and communicated with the branch of heating unit when opening, branch is connected with voltage stabilization and regulation device.
Relative to the prior art, the present invention utilizes the cryogenic natural gas body of expander outlet, passes through heat exchanger and combustion gas wheel
Air needed for machine compressor exchanges heat, and can utilize the cold energy of expander outlet and reduce gas turbine blower
Intake air temperature, improves combustion engine efficiency.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Wherein, 1 is expanding machine；2 be heat exchanger；3 be compressor；4 be temperature monitoring device；5 be temperature-sensing valve；6 be heating
Device；7 be voltage stabilization and regulation device；8 be regulating valve I；9 be regulating valve II；10 be bypass.
Embodiment
As shown in Figure 1, the natural gas after filtering carries out expansion decompression power generation, the natural temperature after expansion by expanding machine 1
Degree drastically reduces, and installation temperature-detecting device 4 is exported in expanding machine 1, when outlet temperature liquefaction pressure critical less than gas, leads to
Cross control system and adjust 1 outlet pressure of expanding machine to improve Outlet Gas Temperature, prevent gas liquefaction.
The cryogenic natural gas that expanding machine 1 comes out passes through the heat exchanger 2 installed in 3 input end of combustion engine compressor, utilizes combustion engine
Heat exchange between inlet air and cryogenic natural gas, to improve natural gas temperature, reduces the temperature of combustion engine inlet air, improves
Fuel engine power generation efficiency.
Natural gas after heat exchange, by temperature-sensing valve 5, when temperature is less than gas equipment requirement, temperature-sensing valve 5 is opened, naturally
The heated device 6 of gas is heated, and otherwise, temperature-sensing valve 5 is closed, and natural gas is without heating unit 6.
After fuel gas temperature reaches the requirement of combustion engine intake air temperature, further pressure adjusting is carried out through voltage-regulating and voltage-stabilizing device 7, it is full
Sufficient gas equipment requirement.
When turbine failure, regulating valve 9 and regulating valve 8 are switched fast, and are walked pressure regulation bypass 10 and are supplied for combustion engine.
Pressure regulation bypass 10 and expanding machine 1 share a set of voltage-regulating and voltage-stabilizing device 7.
The cryogenic natural gas body that the present invention is exported using expanding machine 1, by needed for heat exchanger 2 and gas turbine blower 3
Air exchange heat, can utilize expanding machine 1 export cold energy and reduce by 3 intake air temperature of gas turbine blower, improve
Combustion engine efficiency.
Claims (1)
- A kind of 1. natural gas differential pressure cold energy utilization device, it is characterised in that：Including the expanding machine connected with natural gas air inlet pipe road, After natural gas expands in expanding machine, voltage stabilization and regulation device is entered by heat exchanger, natural gas in heat exchanger with gas turbine Compressor air inlet heat exchange, natural gas enters combustion chamber or gas fired-boiler through voltage stabilization and regulation device, in the day of expanding machine front end Regulating valve II is provided with right feed channel, the bypass duct connected with voltage stabilization and regulation device is provided with natural gas air inlet pipe road, Regulating valve I is provided with bypass duct；The temperature monitoring device for adjusting outlet pressure of expansion machine is provided between expanding machine and heat exchanger；Temperature-sensing valve is provided between heat exchanger and voltage stabilization and regulation device, heat exchanger connects with voltage stabilization and regulation device when temperature-sensing valve is closed Logical, temperature-sensing valve is provided with and communicated with the branch of heating unit when opening, and branch is connected with voltage stabilization and regulation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610406422.8A CN105888845B (en) | 2016-06-12 | 2016-06-12 | A kind of natural gas differential pressure cold energy utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610406422.8A CN105888845B (en) | 2016-06-12 | 2016-06-12 | A kind of natural gas differential pressure cold energy utilization device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105888845A CN105888845A (en) | 2016-08-24 |
| CN105888845B true CN105888845B (en) | 2018-05-08 |
Family
ID=56730071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610406422.8A Active CN105888845B (en) | 2016-06-12 | 2016-06-12 | A kind of natural gas differential pressure cold energy utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105888845B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640222B (en) * | 2016-11-29 | 2018-06-01 | 西南石油大学 | A kind of skid-mounted type natural gas line generator |
| CN106930793A (en) * | 2017-04-06 | 2017-07-07 | 碧海舟（北京）节能环保装备有限公司 | Using the refrigeration system of pressure energy of natural gas |
| CN108317011B (en) * | 2018-01-23 | 2020-08-25 | 深圳市燃气集团股份有限公司 | Natural gas pressure energy recovery system of integrated gas turbine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755288Y (en) * | 2004-11-03 | 2006-02-01 | 上海工程技术大学 | Combined generator by natural gas transmission and distribution line differential pressure |
| CN101280723A (en) * | 2008-05-29 | 2008-10-08 | 华北电力大学 | Method and device for reutilization of natural gas pipe network pressure energy in gas turbine working domain |
| CN101806293A (en) * | 2010-03-10 | 2010-08-18 | 华南理工大学 | Integrating and optimizing method for improving generation efficiency of liquefied natural gas cold energy |
| CN102155299A (en) * | 2011-03-02 | 2011-08-17 | 上海理工大学 | Combination system of stirling engine and combustion gas turbine utilizing liquefied natural gas |
| CN102383868A (en) * | 2010-08-30 | 2012-03-21 | 刘俊德 | Method and device for comprehensively utilizing energy of high-pressure natural gas |
| CN104863645A (en) * | 2015-05-30 | 2015-08-26 | 上海电力学院 | Efficient pipe network natural gas pressure energy and cold energy recycling and utilization system |
| KR101616333B1 (en) * | 2014-06-05 | 2016-05-11 | 삼성중공업 주식회사 | Lng regasification device |
| CN205714436U (en) * | 2016-06-12 | 2016-11-23 | 华电郑州机械设计研究院有限公司 | A kind of natural gas differential pressure cold energy utilization device |
-
2016
- 2016-06-12 CN CN201610406422.8A patent/CN105888845B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2755288Y (en) * | 2004-11-03 | 2006-02-01 | 上海工程技术大学 | Combined generator by natural gas transmission and distribution line differential pressure |
| CN101280723A (en) * | 2008-05-29 | 2008-10-08 | 华北电力大学 | Method and device for reutilization of natural gas pipe network pressure energy in gas turbine working domain |
| CN101806293A (en) * | 2010-03-10 | 2010-08-18 | 华南理工大学 | Integrating and optimizing method for improving generation efficiency of liquefied natural gas cold energy |
| CN102383868A (en) * | 2010-08-30 | 2012-03-21 | 刘俊德 | Method and device for comprehensively utilizing energy of high-pressure natural gas |
| CN102155299A (en) * | 2011-03-02 | 2011-08-17 | 上海理工大学 | Combination system of stirling engine and combustion gas turbine utilizing liquefied natural gas |
| KR101616333B1 (en) * | 2014-06-05 | 2016-05-11 | 삼성중공업 주식회사 | Lng regasification device |
| CN104863645A (en) * | 2015-05-30 | 2015-08-26 | 上海电力学院 | Efficient pipe network natural gas pressure energy and cold energy recycling and utilization system |
| CN205714436U (en) * | 2016-06-12 | 2016-11-23 | 华电郑州机械设计研究院有限公司 | A kind of natural gas differential pressure cold energy utilization device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105888845A (en) | 2016-08-24 |
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