CN205714436U - 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
- CN205714436U CN205714436U CN201620557922.7U CN201620557922U CN205714436U CN 205714436 U CN205714436 U CN 205714436U CN 201620557922 U CN201620557922 U CN 201620557922U CN 205714436 U CN205714436 U CN 205714436U
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- Prior art keywords
- natural gas
- decompressor
- regulation
- heat exchanger
- voltage stabilization
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Abstract
This utility model relates to fuel gas transmission and technical field of power generation, particularly relate to a kind of natural gas differential pressure cold energy utilization device, including the decompressor connected with natural gas admission line, after natural gas expands in decompressor, voltage stabilization and regulation device is entered by heat exchanger, natural gas in heat exchanger with the air inlet heat exchange of the compressor of gas turbine, natural gas via voltage stabilization and regulation device enters combustor or gas fired-boiler, the natural gas line of decompressor front end is provided with regulation valve II, the bypass duct with voltage stabilization and regulation device it is provided with on natural gas admission line, regulation valve I it is provided with on bypass duct.Relative to prior art, this utility model utilizes the cryogenic natural gas body of expander outlet, carries out heat exchange by the air needed for heat exchanger and 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
This utility model relates to fuel gas transmission and technical field of power generation, particularly relates to a kind of natural gas differential pressure cold energy use
Device.
Background technology
Along with gradually building up and the introduction of overseas liquefied natural gas of west_east gas transmission pipeline, and wanting of reducing discharging of national energy-saving
Asking, natural gas, as a kind of clean energy resource, the most gradually replaces coal, becomes the main fuel of power plant.
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 decompressor
Natural gas is heated, in vain waste this part cold energy, in heating process, waste heat energy and electric energy.
Utility model content
The technical problems to be solved in the utility model is: turbine power generation is to enter natural gas before natural gas enters decompressor
Row heating, wastes the cold energy of natural gas, wastes the heat energy needed for heating and electric energy, for solving the problems referred to above, it is provided that one
Plant natural gas differential pressure cold energy utilization device.
The purpose of this utility model is achieved in that
A kind of natural gas differential pressure cold energy utilization device, including the decompressor connected with natural gas admission line, natural gas exists
After decompressor expands, enter voltage stabilization and regulation device by heat exchanger, natural gas in heat exchanger with the compressor of gas turbine
Air inlet heat exchange, natural gas via voltage stabilization and regulation device enters combustor or gas fired-boiler, at the natural gas line of decompressor front end
On be provided with regulation valve II, natural gas admission line is provided with the bypass duct with voltage stabilization and regulation device, bypass duct sets
It is equipped with regulation valve I.
The device for detecting temperature for regulating outlet pressure of expansion machine it is provided with between decompressor and heat exchanger.
Temperature-sensing valve it is provided with, heat exchanger and voltage stabilization and regulation device when temperature-sensing valve cuts out between heat exchanger and voltage stabilization and regulation device
Connection, temperature-sensing valve is provided with and communicated with the branch road of heater when opening, branch road connects with voltage stabilization and regulation device.
Relative to prior art, this utility model utilizes the cryogenic natural gas body of expander outlet, by heat exchanger and combustion
Air needed for gas-turbine compressor carries out heat exchange, can utilize the cold energy of expander outlet, can reduce again gas turbine and calm the anger
The intake air temperature of machine, improves combustion engine efficiency.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Wherein, 1 is decompressor；2 is heat exchanger；3 is compressor；4 is device for detecting temperature；5 is temperature-sensing valve；6 is heating
Device；7 is voltage stabilization and regulation device；8 is regulation valve I；9 is regulation valve II；10 is bypass.
Detailed description of the invention
As it is shown in figure 1, the natural gas after Guo Lving carries out expanding blood pressure lowering generating, the natural temperature after expansion through decompressor 1
Degree drastically reduces, and installs temperature-detecting device 4 in decompressor 1 outlet, when outlet temperature is less than the critical liquefaction pressure of gas, logical
Cross control system regulation decompressor 1 outlet pressure to improve Outlet Gas Temperature, prevent gas liquefaction.
Decompressor 1 cryogenic natural gas out, through being arranged on the heat exchanger 2 of combustion engine compressor 3 entrance point, utilizes combustion engine
Heat exchange between inlet air and cryogenic natural gas, improves natural gas temperature, reduces the temperature of combustion engine inlet air, improves
Fuel engine power generation efficiency.
Natural gas after heat exchange, through temperature-sensing valve 5, when temperature requires less than gas equipment, temperature-sensing valve 5 is opened, natural
The heated device of gas 6 heats, and otherwise, temperature-sensing valve 5 cuts out, and natural gas is without heater 6.
After fuel gas temperature reaches the requirement of combustion engine intake air temperature, carry out further pressure regulation through voltage-regulating and voltage-stabilizing device 7, full
Foot gas equipment requirement.
When turbine fault, regulation valve 9 and regulation valve 8 are switched fast, and walk pressure regulation bypass 10 and supply for combustion engine.
Pressure regulation bypass 10 and decompressor 1 share a set of voltage-regulating and voltage-stabilizing device 7.
This utility model utilizes the cryogenic natural gas body that decompressor 1 exports, by heat exchanger 2 and gas turbine blower 3
Required air carries out heat exchange, can utilize the cold energy that decompressor 1 exports, can reduce again gas turbine blower 3 intake air temperature,
Improve combustion engine efficiency.
Claims (3)
1. a natural gas differential pressure cold energy utilization device, it is characterised in that: include the decompressor connected with natural gas admission line,
After natural gas expands in decompressor, by heat exchanger enter voltage stabilization and regulation device, natural gas in heat exchanger with gas turbine
The air inlet heat exchange of compressor, natural gas via voltage stabilization and regulation device enters combustor or gas fired-boiler, in the sky of decompressor front end
So it is provided with regulation valve II in feed channel, natural gas admission line is provided with the bypass duct with voltage stabilization and regulation device, bypass
Regulation valve I it is provided with on pipeline.
A kind of natural gas differential pressure cold energy utilization device the most according to claim 1, it is characterised in that: in decompressor and heat exchange
The device for detecting temperature for regulating outlet pressure of expansion machine it is provided with between device.
A kind of natural gas differential pressure cold energy utilization device the most according to claim 1, it is characterised in that: heat exchanger and voltage stabilizing are adjusted
Being provided with temperature-sensing valve between pressure device, when temperature-sensing valve cuts out, heat exchanger connects with voltage stabilization and regulation device, connection when temperature-sensing valve is opened
Being provided with the branch road of heater, branch road connects with voltage stabilization and regulation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620557922.7U CN205714436U (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 |
|---|---|---|---|
| CN201620557922.7U CN205714436U (en) | 2016-06-12 | 2016-06-12 | A kind of natural gas differential pressure cold energy utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714436U true CN205714436U (en) | 2016-11-23 |
Family
ID=57302948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620557922.7U Expired - Fee Related CN205714436U (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) | CN205714436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888845A (en) * | 2016-06-12 | 2016-08-24 | 华电郑州机械设计研究院有限公司 | Natural gas differential pressure cold energy utilization device |
-
2016
- 2016-06-12 CN CN201620557922.7U patent/CN205714436U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888845A (en) * | 2016-06-12 | 2016-08-24 | 华电郑州机械设计研究院有限公司 | Natural gas differential pressure cold energy utilization device |
| CN105888845B (en) * | 2016-06-12 | 2018-05-08 | 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |