CN205559072U - Sweeping gas body pressure stability's gas turbine - Google Patents
Sweeping gas body pressure stability's gas turbine Download PDFInfo
- Publication number
- CN205559072U CN205559072U CN201620366125.0U CN201620366125U CN205559072U CN 205559072 U CN205559072 U CN 205559072U CN 201620366125 U CN201620366125 U CN 201620366125U CN 205559072 U CN205559072 U CN 205559072U
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- China
- Prior art keywords
- valve
- nitrogen
- control valve
- gas
- purging
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model provides an intercommunication has the steady voltage back flow between the sweeping gas body conveyer pipe, is equipped with the backward flow governing valve on the steady voltage back flow that sweeping gas body pressure stability's gas turbine mainly comprises sweeping gas body conveyer pipe, the compressor, sweeping gas body storage tank, control valve, governing valve, relief valve, flow control valve and the combustion chamber that connect gradually on sweeping gas body conveyer pipe, before its sweeping gas body conveyer pipe and flow control valve before the compressor. The utility model discloses can solve the instantaneous impact that nitrogen pressure dropped suddenly when sweeping the beginning, can solve the blow down valve again and close the instantaneous impact that back nitrogen pressure sharply rose, ensure the high -efficient steady operation of gas turbine to reduce unit maintenance cost and intensity of labour by a wide margin, still save annual 20 days troubleshooting time, and need to consume the fuel that light oil 40t controlled because of the nitrogen system trouble machine of jumping at every turn.
Description
Technical field
The utility model belongs to integrated gas-steam combined cycle power plant technical field, particularly belongs to a kind of gas turbine purging gas pressure stability.
Background technology
Gas combustion-gas vapor combined cycle technology is current one of state-of-the-art generation technology of metallurgy industry the most in the world, it is made up of several parts such as gas turbine, gas compression pump, generator, waste heat boiler, steam turbines, wherein gas turbine be the HTHP mixed gas that gas compression pump is sent here chemical energy burning after be converted into heat energy, heat energy does work in the gas turbine after pushing generator generates electricity and discharges high-temperature flue gas, high-temperature flue gas enters waste heat boiler vapo(u)rization system and produces the generating of a large amount of Steam Actuation steam turbine generators, it is achieved the cascade utilization of heat energy.
At present, the fuel of gas combustion-gas vapor combined cycle unit is mainly low-calorie blast furnace gas and liquid light diesel fuel, wherein liquid light diesel fuel only when gas turbine initial start stage as starting fluid, the mixed gas of the HTHP after gas compression pump compressor compresses is as the operation fuel of gas turbine.When gas turbine group completes to start, and when reaching to switch fuel load, first need to pass through inert gas, gas fuel system and combustion chamber are purged by mainly nitrogen, avoid substantial amounts of gaseous fuel and liquid fuel to simultaneously enter combustion chambers burn and cause deflagration phenomenon, purged post fuel and progressively switched to gaseous fuel from the liquid fuel at initial stage again；Otherwise gas turbine is in stopping process, first load shedding is to after switchable load, purges liquid fuel system and combustion chamber secondly by nitrogen, is progressively switched back into liquid fuel after having purged again by gaseous fuel.
Gas turbine needs to be purged its burning gallery by inert gases such as nitrogen during Fuel switching, and purges nitrogen system at present as shown in Figure 1: outer net 1.5Mpa nitrogen delivers to 60m after nitrogen compressor is forced into 6.0Mpa3Nitrogen pot store, be then 2.8Mpa by pressure regulator valve 6.0 Mpa nitrogen pressure pressure regulation in case gas turbine purges use.This nitrogen purge system subject matter is shorter only about the 40s of gas turbine purge, when purging control valve and opening, substantial amounts of nitrogen entrance gas-turbine combustion chamber carries out blowing pipeline, and pressure regulator valve cannot all be decompressed to 2.8 Mpa the nitrogen of nitrogen pot 6.0 Mpa in instantaneous time, and substantial amounts of purging nitrogen enters combustion chamber and makes nitrogen pipeline pressure drastically decline, when pressure is less than 2.3 Mpa, gas turbine can fault chaser；Substantial amounts of nitrogen accumulation is had in the duct after purging control valve is closed, pipeline pressure is caused drastically to raise, pressure regulator valve cannot be instantaneous Nitrogen pipe network pressure stability at 2.8 Mpa, when pressure is higher than safety valve action pressure 3.1 Mpa, and safety valve action gas turbine can fault chaser.Therefore it is badly in need of a kind of Novel nitrogen blow device, the temporary impact that when purging starts, nitrogen pressure drastically declines can be solved, the temporary impact that after blow down valve cuts out, nitrogen pressure drastically raises can be solved again, it is ensured that gas turbine efficient stable runs.
Through retrieval, Chinese Patent Application No. is the document of 2014204615551.3, disclose " a kind of combustion turbine nitrogen purging stabilising arrangement ", the document is to utilize liquid nitrogen to be delivered to water bath type vaporizer through liquid nitrogen pump, gas nitrogen holding vessel and nitrogen buffer tank is delivered to after liquid nitrogen being converted into gaseous state by steam heating, finally purge for gas turbine, first this kind of mode have the disadvantage that, nitrogen is gaseous state at normal temperatures, carry out in liquid form storing and carrying pressure vessel, valve, the pressure rating requirement of the equipment such as pipeline is higher, in production operation, danger is bigger；Secondly, need to increase water bath type vaporizer device and liquid nitrogen is converted into gaseous nitrogen, add equipment cost, need during liquid nitrogen vaporization, with steam, to increase equipment operating cost and security simultaneously；Again, purging starts to enter combustion chamber in a large number causes the instantaneous decline of Nitrogen pipe network pressure, only can not solve nitrogen pressure problem by regulation valve, after having purged equally, the nitrogen valve entering combustion chamber purging is closed, a large amount of nitrogen accumulation cause nitrogen pressure drastically to raise in the duct, only can not the most effectively stablize Nitrogen pipe network pressure by regulation valve, affect unit safety stable operation.Chinese Patent Application No. is the document of 201210012868.4, disclose one " combustion turbine purge system and assemble method thereof ", it is mainly to the purgings such as the burner within gas turbine, burner and cleaning, it is impossible to solve the problem of outside Nitrogen pipe network system pressure momentary fluctuation during Fuel switching.
Utility model content
The deficiency that the utility model exists for prior art, there is provided a kind of and can solve the temporary impact that when purging starts, nitrogen pressure drastically declines, the temporary impact that after blow down valve cuts out, nitrogen pressure drastically raises can be solved again, it is ensured that the gas turbine of the purging gas pressure stability that gas turbine efficient stable runs.
Realize the technical measures of above-mentioned purpose:
A kind of gas turbine purging gas pressure stability, the compressor, purging gas reservoir, control valve, regulation valve, safety valve, flow control valve and the combustion chamber that mainly by purging air shooter, are connected in turn on purging air shooter form, it is: before the compressor purging air shooter and flow control valve before purging air shooter between be communicated with voltage stabilizing return duct, voltage stabilizing return duct is provided with return valve.
It is: be provided with recycle control valve and backflow hand-operated valve on voltage stabilizing return duct.
It is: is provided with supplementary purge gas holder on the voltage stabilizing return duct between recycle control valve and backflow hand-operated valve, and is provided with switch valve on supplementary purge gas holder.
Feature of the present utility model: after using the utility model, the temporary impact that when purging starts, nitrogen pressure drastically declines can be solved, the temporary impact that after blow down valve cuts out, nitrogen pressure drastically raises can be solved again, guarantee that gas turbine efficient stable runs, try out over one year, there is not nitrogen system fault chaser, gas turbine group is run more stable, efficient, thus unit maintenance cost and labour intensity are greatly reduced, the corrective maintenance time that also can save annual 20 days, and because each nitrogen system fault chaser need to consume the fuel of light oil about 40t.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
In figure: 1 purging air shooter, 2 compressors, 3 purging gas reservoir, 4 regulation valves, 5 safety valves, 6 flow control valves, 7 combustion chambers, 8 voltage stabilizing return ducts, 9 return valves, 10 recycle control valves, 11 backflow hand-operated valves, 12 supplement purge gas holder, 13 control valves, 14 switch valves.
Detailed description of the invention
It is described further below in conjunction with the accompanying drawings:
A kind of gas turbine purging gas pressure stability, the compressor 2, purging gas reservoir 3, control valve 13, regulation valve 4, safety valve 5, flow control valve 6 and the combustion chamber 7 that mainly by purging air shooter 1, are connected in turn on purging air shooter 1 form, by welding or pipe joint connection voltage stabilizing return duct 8 between its purging air shooter 1 and purging air shooter 1 before flow control valve 6 before compressor 2, equipped with return valve 9 on voltage stabilizing return duct 8；Also equipped with recycle control valve 10 and backflow hand-operated valve 11 on voltage stabilizing return duct 8.
The most also use to weld on the voltage stabilizing return duct 8 between recycle control valve 10 with backflow hand-operated valve 11 and be communicated with supplementary purge gas holder 12, and equipped with switch valve 14 on supplementary purge gas holder 12.
Operating principle
Outer net 1.5Mpa nitrogen is forced into 6.0Mpa through nitrogen compressor and is stored in 60m3Nitrogen pot store；Purging front opening control valve 13 and regulation valve 4, and purging nitrogen pressure is adjusted to 2.8Mpa, then open flow control valve 6 and enter purge mode.
When gas turbine enters purge mode and purging gas pressure is drastically dropped by less than 2.8Mpa, closing volume hand-operated valve 11, open return valve 9 and recycle control valve 10, carry out supplementing supercharging to purging nitrogen by purging air shooter 1, it is ensured that purge safety and stability.
When gas turbine purging purging of complete moment gas pressure drastically raises more than 2.8Mpa, first open control valve 13, regulation valve 4, backflow hand-operated valve 8, return valve 9, recycle control valve 10, discharge rapidly pipeline pressure；When pressure is down to 2.8Mpa, close all valves on voltage stabilizing return duct 8, stablize unit purging nitrogen pressure by regulation valve 4.
When purging tolerance and being not enough, then supplement purge gas by opening the switch valve 14 on holder 12.
This detailed description of the invention is only and most preferably enumerates, the not restricted enforcement to technical solutions of the utility model.
Claims (3)
1. the gas turbine purging gas pressure stability, the compressor, purging gas reservoir, control valve, regulation valve, safety valve, flow control valve and the combustion chamber that mainly by purging air shooter, are connected in turn on purging air shooter form, it is characterized in that: before the compressor purging air shooter and flow control valve before purging air shooter between be communicated with voltage stabilizing return duct, voltage stabilizing return duct is provided with return valve.
A kind of gas turbine purging gas pressure stability the most as claimed in claim 1, it is characterised in that: on voltage stabilizing return duct, it is provided with recycle control valve and backflow hand-operated valve.
A kind of gas turbine purging gas pressure stability the most as claimed in claim 2, it is characterised in that: it is provided with supplementary purge gas holder on the voltage stabilizing return duct between recycle control valve and backflow hand-operated valve, and is provided with switch valve on supplementary purge gas holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366125.0U CN205559072U (en) | 2016-04-27 | 2016-04-27 | Sweeping gas body pressure stability's gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620366125.0U CN205559072U (en) | 2016-04-27 | 2016-04-27 | Sweeping gas body pressure stability's gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559072U true CN205559072U (en) | 2016-09-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620366125.0U Expired - Fee Related CN205559072U (en) | 2016-04-27 | 2016-04-27 | Sweeping gas body pressure stability's gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205559072U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106991860A (en) * | 2017-04-24 | 2017-07-28 | 北京航天试验技术研究所 | A kind of kidney-yang simulation generator and control method |
| CN106997700A (en) * | 2017-04-24 | 2017-08-01 | 北京航天试验技术研究所 | A kind of fuel feed system and kidney-yang simulation generator |
| CN107025817A (en) * | 2017-04-24 | 2017-08-08 | 北京航天试验技术研究所 | A kind of fuel feed system and kidney-yang simulation generator |
| CN109578145A (en) * | 2018-11-15 | 2019-04-05 | 重庆千信能源环保有限公司 | A kind of GE combustion engine starting method |
| CN112503928A (en) * | 2020-12-07 | 2021-03-16 | 安徽仕联电气有限公司 | High-temperature rotary furnace control equipment |
| CN112727604A (en) * | 2020-12-23 | 2021-04-30 | 大连欧谱纳透平动力科技有限公司 | Liquid/gas dual fuel supply system for gas turbine |
| CN113277054A (en) * | 2021-06-29 | 2021-08-20 | 广船国际有限公司 | Marine methanol supply system |
| CN113513409A (en) * | 2021-08-20 | 2021-10-19 | 中国联合重型燃气轮机技术有限公司 | Purge system for gas turbine and control method thereof |
-
2016
- 2016-04-27 CN CN201620366125.0U patent/CN205559072U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106991860A (en) * | 2017-04-24 | 2017-07-28 | 北京航天试验技术研究所 | A kind of kidney-yang simulation generator and control method |
| CN106997700A (en) * | 2017-04-24 | 2017-08-01 | 北京航天试验技术研究所 | A kind of fuel feed system and kidney-yang simulation generator |
| CN107025817A (en) * | 2017-04-24 | 2017-08-08 | 北京航天试验技术研究所 | A kind of fuel feed system and kidney-yang simulation generator |
| CN109578145A (en) * | 2018-11-15 | 2019-04-05 | 重庆千信能源环保有限公司 | A kind of GE combustion engine starting method |
| CN112503928A (en) * | 2020-12-07 | 2021-03-16 | 安徽仕联电气有限公司 | High-temperature rotary furnace control equipment |
| CN112727604A (en) * | 2020-12-23 | 2021-04-30 | 大连欧谱纳透平动力科技有限公司 | Liquid/gas dual fuel supply system for gas turbine |
| CN113277054A (en) * | 2021-06-29 | 2021-08-20 | 广船国际有限公司 | Marine methanol supply system |
| CN113277054B (en) * | 2021-06-29 | 2022-05-27 | 广船国际有限公司 | Marine methanol supply system |
| CN113513409A (en) * | 2021-08-20 | 2021-10-19 | 中国联合重型燃气轮机技术有限公司 | Purge system for gas turbine and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170622 Address after: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Patentee after: Wuhan iron and Steel Company Limited Address before: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2 Patentee before: WUHAN IRON AND STEEL CORPORATION |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20200427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |