CN112682175A - Air inlet filtering system and filtering method for irreversible dust-removing gas turbine - Google Patents
Air inlet filtering system and filtering method for irreversible dust-removing gas turbine Download PDFInfo
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- CN112682175A CN112682175A CN202011523675.6A CN202011523675A CN112682175A CN 112682175 A CN112682175 A CN 112682175A CN 202011523675 A CN202011523675 A CN 202011523675A CN 112682175 A CN112682175 A CN 112682175A
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- 238000001914 filtration Methods 0.000 title claims abstract description 38
- 230000002427 irreversible effect Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000000428 dust Substances 0.000 claims abstract description 77
- 238000004140 cleaning Methods 0.000 claims abstract description 43
- 230000030279 gene silencing Effects 0.000 claims abstract description 15
- 238000011010 flushing procedure Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007664 blowing Methods 0.000 claims description 32
- 230000003584 silencer Effects 0.000 claims description 6
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 3
- 239000003570 air Substances 0.000 description 100
- 238000007599 discharging Methods 0.000 description 9
- 239000012535 impurity Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention aims to provide an air inlet filtering system and a filtering method of an irreversible dust-removing gas turbine, and the air inlet filtering system comprises an air inlet filtering chamber and an air inlet pipeline, wherein an air-water separator, a self-cleaning filter and a high-efficiency filter are arranged in the air inlet filtering chamber from front to back, the air inlet pipeline comprises an air inlet filtering section, an air inlet horizontal straight section, an air inlet silencing section, an air inlet vertical section and an air inlet volute which are sequentially connected, the air inlet filtering section is connected with the high-efficiency filter of the air inlet filtering chamber, the air inlet silencing section is connected with the air inlet vertical section through an air inlet elbow, the air inlet volute is connected with the gas turbine, a funnel type dust removing device is arranged below the air inlet filtering chamber, all the funnel type dust removing devices are communicated with a funnel type dust removing channel, and the end part of the funnel type dust removing channel is sequentially. The invention can avoid the occurrence of the condition that the self-cleaning filter secondarily blocks the filter element by sundries such as falling dust and the like after back flushing, and can also avoid the occurrence of the condition that the dust is secondarily sucked by the air inlet filtering device.
Description
Technical Field
The invention relates to a gas turbine, in particular to a gas turbine filtering technology.
Background
The gas turbine has extremely high requirement on air cleanliness, and a gas turbine inlet air filtering system is generally configured with two-stage or three-stage filtering. The cleanliness of the inlet air of the gas turbine directly affects the performance and the service life of the gas turbine, and further affects the operation economy of the gas turbine. For the gas turbine inlet air filter device which is horizontally installed, the self-cleaning pulse back-blowing filter is an important component of the gas turbine inlet air filter device, and the inlet air filter is subjected to back-blowing cleaning by compressed air, so that the filter element blocking resistance is reduced, and the performance of the gas turbine is improved.
When the gas turbine air inlet self-cleaning filter is in a back flushing mode, sundries such as dust on the self-cleaning filter element can fall off in the back flushing mode, on one hand, due to the fact that a system for discharging the dust in time is lacked, the dust falling off in the back flushing mode is likely to generate secondary blocking of the filter element, on the other hand, if the dust discharging system is installed, the dust discharging is required to be prevented from being sucked by the air inlet filter device for the second time, therefore, when the gas turbine air inlet filter device performs the self-cleaning back flushing, the arrangement of a set of irreversible dust discharging system is particularly important, the air inlet filter can automatically clean the back flushing mode, meanwhile, the sundries such as the dust falling off after the back flushing mode are discharged in time, meanwhile, the dust discharging is prevented from being sucked by the air inlet filter device for the second time, the service life.
At present, relevant scholars at home and abroad carry out certain research on gas turbine inlet air filtering systems, but the study mainly focuses on the characteristic research on the influence of a gas turbine inlet air filter body and the inlet air filtering system on the performance of a gas turbine, and patents and documents published on the gas turbine inlet air filtering system for irreversible dust removal do not appear.
Disclosure of Invention
The invention aims to provide an irreversible dust-discharging gas turbine inlet air filtering system and a filtering method, which can discharge impurities such as dust falling off by back flushing of a self-cleaning filter in time, simultaneously avoid secondary suction of the discharged dust by an inlet air filtering device, ensure the inlet air filtering effect of a gas turbine and prolong the service life of a filter element of an inlet air filter.
The purpose of the invention is realized as follows:
the invention relates to an air inlet filtering system of an irreversible dust-removing gas turbine, which is characterized in that: the dust removal device comprises an air inlet filter chamber and an air inlet pipeline, wherein an air-water separator, a self-cleaning filter and a high-efficiency filter are arranged in the air inlet filter chamber from front to back, the air inlet pipeline comprises an air inlet filter section, an air inlet horizontal straight section, an air inlet silencing section, an air inlet vertical section and an air inlet volute which are sequentially connected, the air inlet filter section is connected with the high-efficiency filter of the air inlet filter chamber, the air inlet silencing section is connected with the air inlet vertical section through an air inlet elbow, the air inlet volute is connected with a gas turbine, a funnel type dust exhaust device is arranged below the air inlet filter chamber, all the funnel type dust exhaust devices are communicated with a funnel type dust exhaust channel, an ash removal fan, a clean air motor and a one-way baffle valve are sequentially arranged at the end part of the funnel type dust exhaust channel.
The air inlet filtering system of the irreversible dust-removing gas turbine can also comprise:
1. the self-cleaning filter is connected with an instrument gas source through a back-flushing electromagnetic valve, the self-cleaning filter is a self-cleaning pulse back-flushing filter with a straight cylinder and a conical cylinder connected, and the self-cleaning filter is provided with a differential pressure sensor.
2. An air inlet silencer is arranged in the air inlet silencing section, and a scrap removing sieve is arranged in the air inlet elbow.
3. The front end of the gas-water separator is provided with a rain cover, and the bird prevention net is arranged in the rain cover.
4. The air inlet vertical section is connected with the air inlet volute through a non-metal expansion joint.
The invention discloses an irreversible dust-removing gas turbine inlet air filtering method, which comprises the following steps: the method is characterized in that: the following filtration system was used: the device comprises an air inlet filter chamber and an air inlet pipeline, wherein the air inlet filter chamber is provided with an air-water separator, a self-cleaning filter and a high-efficiency filter from front to back, the air inlet pipeline comprises an air inlet filter section, an air inlet horizontal straight section, an air inlet silencing section, an air inlet vertical section and an air inlet volute which are sequentially connected, the air inlet filter section is connected with the high-efficiency filter of the air inlet filter chamber, the air inlet silencing section is connected with the air inlet vertical section through an air inlet elbow, the air inlet volute is connected with a gas turbine, a funnel type dust exhaust device is arranged below the air inlet filter chamber, all the funnel type dust exhaust devices are communicated with a funnel type dust exhaust channel, and the end part of the funnel type;
when a pressure difference sensor arranged on the self-cleaning filter reaches an appointed alarm value, a back-blowing electromagnetic valve is controlled to carry out pulse back-blowing, and meanwhile, an ash removal fan operates to discharge sundries falling off by back-blowing from a funnel type dust discharge channel through the ash removal fan and a one-way baffle valve; when the pressure difference sensor arranged on the self-cleaning filter does not reach the designated alarm value, the back-blowing electromagnetic valve can be manually controlled by the remote operation console to carry out pulse type back-blowing, and meanwhile, the dust cleaning fan operates to discharge sundries falling off in the back-blowing mode from the funnel type dust exhaust channel through the dust cleaning fan and the one-way baffle valve.
The invention has the advantages that: the gas turbine air inlet filter device is provided with the ash removal fan, the funnel type dust exhaust channel, the one-way baffle valve, the dust exhaust elbow and the dust exhaust vertical section, on one hand, the ash removal fan and the funnel type dust exhaust channel can timely discharge sundries such as dust falling off due to back blowing of the self-cleaning filter, the situation that the filter element is blocked by sundries such as dust falling off after back blowing of the self-cleaning filter is avoided, on the other hand, the one-way baffle valve, the dust exhaust elbow and the dust exhaust vertical section can avoid the situation that the dust exhaust is sucked by the air inlet filter device secondarily, the air inlet filter effect of the gas turbine is guaranteed, and the service life of the filter element of the air. When ambient air enters the gas turbine inlet air filtering device, large particle impurities and water vapor are filtered after passing through the rain cover, the bird prevention net and the gas-water separator, the self-cleaning filter of the gas turbine is blocked after the gas turbine runs for a long time, and as impurities such as dust and the like falling off by back flushing of the self-cleaning filter of the gas turbine can not be discharged in time and are easily sucked by the filter for secondary suction to block the filter element again, and if dust is discharged, secondary suction by the inlet air filtering device is also avoided, the invention is particularly suitable for the gas turbine inlet air filtering device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an irreversible dust exhaust passage;
fig. 3 is a layout diagram of a blowback solenoid valve.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
referring to fig. 1-3, the dust-removing device comprises a rain cover and bird-preventing net 1, an air inlet filter chamber 22, an ash-removing fan 14, a funnel type dust-removing channel 15, a one-way baffle valve 34, a dust-removing elbow 35, a dust-removing vertical section 36, an air inlet transition section 23, an air inlet horizontal straight section 24, an air inlet silencing section 25, an air inlet elbow 28, an air inlet vertical section 29, a non-metal expansion joint 30, an air inlet volute 31, a gas turbine 32, an instrument gas pipeline 10, an air inlet back-blowing control box 5, a back-blowing electromagnetic valve set 11 and a motor control center 17, wherein the air inlet filter chamber comprises a gas-water separator 2, an air inlet filter (a self-cleaning filter 12 and a high-efficiency filter 13), the ash-removing fan 14, the funnel type dust-removing channel 15, a temperature sensor 3, differential pressure sensors 18 and 20, the air inlet silencing section comprises an air inlet silencer 26, the air inlet elbow horizontal section comprises, the bird-proof net is installed in the rain-proof cover, the gas-water separator 2, the self-cleaning filter 12, the back-blowing electromagnetic valve group 11 and the high-efficiency filter 13 are installed in the air inlet filter chamber 22, the ash removal fan 14, the funnel type dust discharge channel 15, the one-way baffle valve 34, the dust discharge elbow 35, the dust discharge vertical section 36 are installed at the bottom of the air inlet filter chamber 22, the air inlet silencer 26 is installed at the air inlet silencing section 25, the scrap removal sieve 27 is installed at the horizontal section of the air inlet elbow 28, the air inlet vertical section 29 is connected behind the air inlet elbow 28, the air inlet vertical section 29 is connected with the air inlet volute 31 through the non-metal expansion joint 30, finally clean air enters the gas turbine 32 through the air inlet volute 31, the temperature sensor 3 is installed on the air inlet filter chamber 22, the funnel type dust discharge channel 15 is arranged at the front end of the self-cleaning filter 12, the fan 14 is installed at the, the dust-removing elbow 35 and the dust-removing vertical section 36 are arranged at the end part of the outlet of the one-way baffle valve 34, the self-cleaning filter 12 is a self-cleaning pulse back-blowing type middle-effect filter which is used by matching a straight cylinder and a conical cylinder in a set, the pulse back-blowing needs to use instrument gas 6 (compressed air), the air inlet back-blowing is controlled by a plurality of electromagnetic valves 33, the high-efficiency filter 13 is arranged behind the self-cleaning filter 12, the air inlet silencer 26 is a tube type or sheet type silencer, the dust removing sieve 27 is a stainless steel screen, the dust removing fan 14 is an axial flow fan, the dust removing fan motor 16 is connected with the motor control center 17, the funnel type dust-removing channel 15 is communicated in series by a plurality of funnel type channels, the one-way baffle valve 34, the dust-removing elbow 35 and the dust-removing vertical section 36 can realize the irreversible dust removal, the self-cleaning filter 12 is provided with a, The instrument gas 10 (compressed air) pipeline, install differential pressure sensor 20 on the high efficiency filter 13, all install valves 19, 21, 4 on differential pressure sensor 18, 20 and the blowback control box 5, instrument gas pipeline 10 installs manometer 8 (including valves 9), ball valve 7.
The air inlet filtering system of the irreversible dust exhaust gas turbine has two operation modes, wherein the first mode is as follows: when the differential pressure sensor 18 installed on the self-cleaning filter 12 reaches a certain designated alarm value, the signal of the designated alarm value is transmitted to the back-blowing control box 5, the back-blowing control box 5 controls the back-blowing electromagnetic valve set 11 to perform pulse back-blowing, meanwhile, the motor control center 17 controls the operation of the ash removal fan motor 16, and impurities such as dust falling off by back-blowing are timely discharged from the funnel type dust removal channel 15 through the ash removal fan 14, the one-way baffle valve 34, the dust removal elbow 35 and the dust removal vertical section 36. The second way is: when the differential pressure sensor 18 installed on the self-cleaning filter 12 does not reach a certain designated alarm value, the back-blowing electromagnetic valve set 11 is manually controlled by the back-blowing control box 5 through the remote operation console to perform pulse back-blowing, and meanwhile, the motor control center 17 controls the operation of the dust cleaning fan motor 16, so that dust and other impurities falling off by back-blowing are timely discharged from the funnel type dust discharging channel 15 through the dust cleaning fan 14, the one-way baffle valve 34, the dust discharging elbow 35 and the dust discharging vertical section 36. When the air inlet back-blowing control box 5 breaks down, an alarm signal is sent out.
Claims (6)
1. The utility model provides an irreversible dust exhaust gas turbine filter system that admits air which characterized by: the dust removal device comprises an air inlet filter chamber and an air inlet pipeline, wherein an air-water separator, a self-cleaning filter and a high-efficiency filter are arranged in the air inlet filter chamber from front to back, the air inlet pipeline comprises an air inlet filter section, an air inlet horizontal straight section, an air inlet silencing section, an air inlet vertical section and an air inlet volute which are sequentially connected, the air inlet filter section is connected with the high-efficiency filter of the air inlet filter chamber, the air inlet silencing section is connected with the air inlet vertical section through an air inlet elbow, the air inlet volute is connected with a gas turbine, a funnel type dust exhaust device is arranged below the air inlet filter chamber, all the funnel type dust exhaust devices are communicated with a funnel type dust exhaust channel, an ash removal fan, a clean air motor and a one-way baffle valve are sequentially arranged at the end part of the funnel type dust exhaust channel.
2. The irreversible dust extraction gas turbine inlet air filtration system of claim 1, wherein: the self-cleaning filter is connected with an instrument gas source through a back-flushing electromagnetic valve, the self-cleaning filter is a self-cleaning pulse back-flushing filter with a straight cylinder and a conical cylinder connected, and the self-cleaning filter is provided with a differential pressure sensor.
3. The irreversible dust extraction gas turbine inlet air filtration system of claim 2, wherein: an air inlet silencer is arranged in the air inlet silencing section, and a scrap removing sieve is arranged in the air inlet elbow.
4. The irreversible dust extraction gas turbine inlet air filtration system of claim 3, wherein: the front end of the gas-water separator is provided with a rain cover, and the bird prevention net is arranged in the rain cover.
5. The irreversible dust exhausting gas turbine inlet air filtration system of claim 4, wherein: the air inlet vertical section is connected with the air inlet volute through a non-metal expansion joint.
6. An air inlet filtering method of an irreversible dust-removing gas turbine comprises the following steps: the method is characterized in that: the following filtration system was used: the device comprises an air inlet filter chamber and an air inlet pipeline, wherein the air inlet filter chamber is provided with an air-water separator, a self-cleaning filter and a high-efficiency filter from front to back, the air inlet pipeline comprises an air inlet filter section, an air inlet horizontal straight section, an air inlet silencing section, an air inlet vertical section and an air inlet volute which are sequentially connected, the air inlet filter section is connected with the high-efficiency filter of the air inlet filter chamber, the air inlet silencing section is connected with the air inlet vertical section through an air inlet elbow, the air inlet volute is connected with a gas turbine, a funnel type dust exhaust device is arranged below the air inlet filter chamber, all the funnel type dust exhaust devices are communicated with a funnel type dust exhaust channel, and the end part of the funnel type;
when a pressure difference sensor arranged on the self-cleaning filter reaches an appointed alarm value, a back-blowing electromagnetic valve is controlled to carry out pulse back-blowing, and meanwhile, an ash removal fan operates to discharge sundries falling off by back-blowing from a funnel type dust discharge channel through the ash removal fan and a one-way baffle valve; when the pressure difference sensor arranged on the self-cleaning filter does not reach the designated alarm value, the back-blowing electromagnetic valve can be manually controlled by the remote operation console to carry out pulse type back-blowing, and meanwhile, the dust cleaning fan operates to discharge sundries falling off in the back-blowing mode from the funnel type dust exhaust channel through the dust cleaning fan and the one-way baffle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523675.6A CN112682175A (en) | 2020-12-22 | 2020-12-22 | Air inlet filtering system and filtering method for irreversible dust-removing gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523675.6A CN112682175A (en) | 2020-12-22 | 2020-12-22 | Air inlet filtering system and filtering method for irreversible dust-removing gas turbine |
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| Publication Number | Publication Date |
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| CN112682175A true CN112682175A (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011523675.6A Pending CN112682175A (en) | 2020-12-22 | 2020-12-22 | Air inlet filtering system and filtering method for irreversible dust-removing gas turbine |
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| CN (1) | CN112682175A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183247A (en) * | 2021-12-13 | 2022-03-15 | 中国船舶重工集团公司第七0三研究所 | Flexible self-adaptive efficient dust-discharging gas turbine inlet air filtering system and filtering method |
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|---|---|---|---|---|
| DE102004021180A1 (en) * | 2004-04-26 | 2005-11-17 | Kaefer-Raco Engineering Gmbh | Filter unit for filtering dust in gas turbines comprises filters having a closed cylindrical truncated cone casing surface arranged around an imaginary vertical axis |
| CN202410423U (en) * | 2012-02-11 | 2012-09-05 | 烟台宝源净化有限公司 | Pulse-self-cleaning air purification equipment |
| CN102758042A (en) * | 2012-08-14 | 2012-10-31 | 唐忠库 | System for rotational flow dust removal and recovery of blast furnace roof raw gas and recovering method of blast furnace roof raw gas |
| CN205047308U (en) * | 2015-10-13 | 2016-02-24 | 城林环保技术（上海）有限公司 | Gas turbine admits air and filters silencing device |
| CN107032002A (en) * | 2017-04-19 | 2017-08-11 | 大唐贵州野马寨发电有限公司 | A kind of ash-transmission system fluidizes pipe anti-block apparatus |
| CN109224644A (en) * | 2018-09-29 | 2019-01-18 | 南京航空航天大学 | Axial-flow type dust-extraction unit and method |
| CN111111333A (en) * | 2019-12-26 | 2020-05-08 | 西安奕斯伟硅片技术有限公司 | Single crystal growing furnace dust removal filtration system |
-
2020
- 2020-12-22 CN CN202011523675.6A patent/CN112682175A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004021180A1 (en) * | 2004-04-26 | 2005-11-17 | Kaefer-Raco Engineering Gmbh | Filter unit for filtering dust in gas turbines comprises filters having a closed cylindrical truncated cone casing surface arranged around an imaginary vertical axis |
| CN202410423U (en) * | 2012-02-11 | 2012-09-05 | 烟台宝源净化有限公司 | Pulse-self-cleaning air purification equipment |
| CN102758042A (en) * | 2012-08-14 | 2012-10-31 | 唐忠库 | System for rotational flow dust removal and recovery of blast furnace roof raw gas and recovering method of blast furnace roof raw gas |
| CN205047308U (en) * | 2015-10-13 | 2016-02-24 | 城林环保技术（上海）有限公司 | Gas turbine admits air and filters silencing device |
| CN107032002A (en) * | 2017-04-19 | 2017-08-11 | 大唐贵州野马寨发电有限公司 | A kind of ash-transmission system fluidizes pipe anti-block apparatus |
| CN109224644A (en) * | 2018-09-29 | 2019-01-18 | 南京航空航天大学 | Axial-flow type dust-extraction unit and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183247A (en) * | 2021-12-13 | 2022-03-15 | 中国船舶重工集团公司第七0三研究所 | Flexible self-adaptive efficient dust-discharging gas turbine inlet air filtering system and filtering method |
| CN114183247B (en) * | 2021-12-13 | 2023-12-08 | 中国船舶重工集团公司第七0三研究所 | Flexible self-adaptive high-efficiency dust-removing gas turbine air inlet filtering system and filtering method |
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Application publication date: 20210420 |
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