NL2021295B1 - An air pre-filtering device for marine gas turbine - Google Patents

An air pre-filtering device for marine gas turbine Download PDF

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Publication number
NL2021295B1
NL2021295B1 NL2021295A NL2021295A NL2021295B1 NL 2021295 B1 NL2021295 B1 NL 2021295B1 NL 2021295 A NL2021295 A NL 2021295A NL 2021295 A NL2021295 A NL 2021295A NL 2021295 B1 NL2021295 B1 NL 2021295B1
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NL
Netherlands
Prior art keywords
filter cartridge
air
gas turbine
filter
tank
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NL2021295A
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Dutch (nl)
Inventor
Wang Songming
Original Assignee
Jiangsu Maritime Vocational Inst
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Application granted granted Critical
Publication of NL2021295B1 publication Critical patent/NL2021295B1/en

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Classifications

    • 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
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/05—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for obviating the penetration of damaging objects or particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
    • B01D47/022—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by using a liquid curtain
    • 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
    • F02C7/08—Heating air supply before combustion, e.g. by exhaust gases

Abstract

The invention relates to an air pre-filtering device for marine gas turbine, comprising a filter cartridge, a windmill, a condensing tank and a buffering tank; An impeller is arranged under the filter cartridge, and a plurality of hole channels are arranged vertically on the side wall of the filter cartridge; The lower ends of the hole channels are located inside the bottom of the filter cartridge, and the upper ends thereof are located on the upper side wall of the filter cartridge; The windmill is rotationally arranged outside the filter cartridge, and the rotating shaft thereof is connected with the rotating shaft of the impeller in a driving way; Filtrate is contained at the lower part of the filter cartridge; The windmill rotates and drives the impeller to press the filtrate in the filter cartridge downward, so that the filtrate moves upward in the hole channels and is injected out of the upper part of the filter cartridge; The upper end of the filter cartridge is opened and communicated with the condensing tank via a pipe, and the condensing tank is communicated with the buffering tank via a pipe. The invention has good filtering effect. By filtering air through the water filter mesh, the workload of the external air filtering device can be relieved, to ensure effective operation of the air compressor and even the gas turbine.

Description

An air pre-filtering device for marine gas turbine
Technical Lield
The invention belongs to the field of gas turbine, and especially relates to an air prefiltering device for marine gas turbine.
Background Technology hi the main flow of air and gas of a gas turbine, there’s only a cycle formed by three components, a compressor, a combustor and a turbine, which is generally called a simple cycle. Most gas turbines use the simple cycle proposal.
The compressor sucks air from the atmospheric environment, the air is boosted through step-by-step compression by the axial flow compressor, and the air temperature rises correspondingly at the same time; The compressed air is fed into the combustor by force, and is combusted by being mixed with the injected fuel, to generate hightemperature and high-pressure gas; The gas enters the turbine and does work through expansion to drive the turbine to drive high-speed rotation of the compressor and the external load rotor, so as to realize partial conversion of chemical energy of the gas or liquid fuel into mechanical work and electrical work output.
The air entering the compressor needs to be filtered by the air filter of the gas turbine, which functions to filter out dust and fine particles in the air, and allow clean air to enter the gas turbine from the air inlet system, so as to ensure safe and reliable operation and power generation of the gas turbine power generating set. If the air filter is of poor quality, leading to congestion, the air inlet volume of the gas turbine will be reduced, and thus the output power and thermal efficiency of the gas turbine power generating set will decrease.
hi the existing technology, the air filter of the gas turbine needs to be back-flushed periodically to discharge impurities, and consumables in the filter cartridge need to be changed promptly to guarantee normal and effective operation of the compressor.
Description of Invention
The invention aims to provide an air pre-filtering device for marine gas turbine, which is used to pre-filter air before entering the air filter of the existing marine gas turbine, so as to reduce the workload and back-flushing frequency of the air filter, prolong the
AO 18.07.1061 NL service lives of the consumables, and further ensure effective operation of the compressor and even the whole gas turbine; Detailed technical scheme:
An air pre-filtering device for marine gas turbine, comprising a filter cartridge, a windmill, a condensing tank and a buffering tank; An impeller is downwardly arranged under the filter cartridge in an axial rotation way, and a plurality of hole channels are arranged vertically on the side wall of the filter cartridge; The lower ends of the hole channels are located inside the bottom of the filter cartridge, and the upper ends thereof are located on the upper side wall of the filter cartridge; The windmill is rotationally arranged outside the filter cartridge, and the rotating shaft thereof penetrates through the side wall of the filter cartridge and is connected with the rotating shaft of the impeller in a driving way; Filtrate is contained at the lower part of the filter cartridge, and an air inlet pipe higher than the filtrate level is communicated in the middle part of the filter cartridge; The windmill drives the impeller to rotate and press the filtrate in the filter cartridge downward when being driven by wind, so that the filtrate moves upward in the hole channels and is injected out of the upper part of the filter cartridge, and filtrate injected out of each hole channel collide with each other to form a filter mesh; The upper end of the filter cartridge is opened and communicated with the condensing tank via a pipe, and the condensing tank is communicated with the buffering tank via a pipe; The buffering tank is connected with the air compressor of the gas turbine through an external filtering device; When the air compressor works, negative pressure is formed in the buffering tank, and is transmitted to the air inlet pipe on the side wall of the filter cartridge, so that external air enters into the filter cartridge, passes through the filter mesh, and enters into the condensing tank, the filtrate contained in the air is condensed in the condensing tank, and then the air enters into the buffering tank to supply air to the external filtering device and air compressor. When the vessel travels in water, especially in the sea, natural wind and relative air flow formed during vessel travel can ensure the windmill to work; at this time, the transmission mechanism with appropriate transmission ratio allows the windmill to drive the impeller to rotate and press the filtrate (e.g., clean water) into the inner upper part of the filter cartridge to form a water quality filter mesh, which has low wind resistance and can well adsorb and solve particles like dust; the operation can be realized without providing an extra driving power; Of course, in case of insufficient wind power, a clutch can be used as appropriate to connect an external driver to the impeller, so as to form a water quality
AO 18.07.1061 NL filter mesh in the filter cartridge.
The air pre-filtering device for marine gas turbine, further designed such that an impurity filter mesh higher than the lower ends of the hole channels but lower than the impeller is arranged horizontally under the filter cartridge. The impurity filter mesh can ensure to intercept impurities in the filtrate on the impurity filter mesh, such that the filtrate injected out of the upper ends of the hole channels and used to form the water quality filter mesh is clean.
The air pre-filtering device for marine gas turbine, further designed such that a deflector is arranged outside the windmill. The deflector can guarantee steady operation state of the windmill.
The air pre-filtering device for marine gas turbine, further designed such that the condensing tank is a tank body, which is externally provided with a plurality of fins and is located outside the vessel away from sunlight.
The air pre-filtering device for marine gas turbine, further designed such that a water supply pipe is arranged at one side of the condensing tank, the upper end of the water supply pipe is located above the condensing tank, and the lower end thereof is submerged in water; the side wall at the lower end of the water supply pipe extends horizontally to form a water intake disc having a diameter larger than the water supply pipe, and the water intake disc is opposite to the vessel forward direction; therefore, partial high pressure is formed in the water intake disc when the vessel travels forward, the water is forced to enter the water supply pipe, the water going out of the upper end of the water supply pipe is sprinkled on the outer wall of the condensing tank, and the water on the condensing tank is evaporated more rapidly when the vessel travels, and thus the temperature of the condensing tank can be further lowered.
The air pre-filtering device for marine gas turbine, further designed such that a warm coil is arranged in the buffering tank, and warm exhaust air emitted from the gas turbine is supplied in the warm coil.
Beneficial effects of the invention:
The wind power existing during vessel travel is utilized to drive the impeller to rotate and form a water quality filter mesh, with low wind resistance and good filtering effect. By filtering air through the water filter mesh, the workload of the external air filtering device can be relieved, to ensure effective operation of the air compressor and even the gas turbine. By using the parti al high pressure formed at the lower end of the water
AO 18.07.1061 NL supply pipe during vessel travel, when the vessel travels, external water can be poured on the condensing tank which can be surely at lower temperature through water evaporation; therefore, water contained in the air filtered by the water quality filter mesh can be mostly condensed in the condensing tank, thus reducing content of water vapor entering the compressor. The heat-containing exhaust air discharged from the gas turbine can heat the air entering the buffering tank to a certain extent, ensure that the temperature of the air entering the external pipe of the compressor is not lower than 5°C, and avoid water vapor in the air from being condensed into ice before entering the compressor and thus hitting the compressor operating at high speed.
Brief Description of Drawings
Fig. 1 shows the overall structural diagram of the embodiment of the invention.
Fig. 2 shows the structural diagram of the filter cartridge.
Specific Implementation
The invention will be further described hereinafter in combination with the accompanying drawings of the specification and the embodiment:
The air pre-filtering device for marine gas turbine as shown in Fig. 1 comprises a filter cartridge 1, a windmill 2, a condensing tank 3 and a buffering tank 4; An impeller 5 is downwardly arranged under the filter cartridge 1 in an axial rotation way, and a plurality of hole channels 11 are arranged vertically on the side wall of the filter cartridge 1; The lower ends of the hole channels are located inside the bottom of the filter cartridge, and the upper ends thereof are located on the upper side wall of the filter cartridge; The windmill 2 is rotationally arranged outside the filter cartridge, and the rotating shaft thereof penetrates through the side wall of the filter cartridge and is connected with the rotating shaft of the impeller in a driving way; Filtrate is contained at the lower part of the filter cartridge 1, and an air inlet pipe 6 higher than the filtrate level is communicated in the middle part of the filter cartridge; The windmill drives the impeller to rotate and press the filtrate in the filter cartridge downward when being driven by wind, so that the filtrate moves upward in the hole channels and is injected out of the upper part of the filter cartridge, and filtrate injected out of each hole channel collide with each other to form a filter mesh 7; The upper end of the filter cartridge is opened and communicated with the condensing tank via a pipe, and the condensing tank
AO 18.07.1061 NL is communicated with the buffering tank via a pipe; The buffering tank is connected with the air compressor of the gas turbine through an external filtering device; When the air compressor works, negative pressure is formed in the buffering tank, and is transmitted to the air inlet pipe on the side wall of the filter cartridge, so that external air enters into the filter cartridge, passes through the filter mesh, and enters into the condensing tank, the filtrate contained in the air is condensed in the condensing tank, and then the air enters into the buffering tank to supply air to the external filtering device and air compressor. When the vessel travels in water, especially in the sea, natural wind and relative air flow formed during vessel travel can ensure the windmill to work; at this time, the transmission mechanism with appropriate transmission ratio allows the windmill to drive the impeller to rotate and press the filtrate (e.g., clean water) into the inner upper part of the filter cartridge to form a water quality filter mesh, which has low wind resistance and can well adsorb and solve particles like dust; the operation can be realized without providing an extra driving power; Of course, in case of insufficient wind power, a clutch can be used as appropriate to connect an external driver to the impeller, so as to form a water quality filter mesh in the filter cartridge. The wind power existing during vessel travel is utilized to drive the impeller to rotate and form a water quality filter mesh, with low wind resistance and good filtering effect. By filtering air through the water filter mesh, the workload of the external air filtering device can be relieved, to ensure effective operation of the air compressor and even the gas turbine.
An impurity filter mesh 12 higher than the lower ends of the hole channels but lower than the impeller is arranged horizontally under the filter cartridge 1. The impurity filter mesh can ensure to intercept impurities in the filtrate on the impurity filter mesh, such that the filtrate injected out of the upper ends of the hole channels and used to form the water quality filter mesh is clean.
A deflector 21 is arranged outside the windmill 2. The deflector can guarantee steady operation state of the windmill.
The condensing tank 3 is a tank body, which is externally provided with a plurality of fins 31 and is located outside the vessel away from sunlight.
A water supply pipe 8 is arranged at one side of the condensing tank, the upper end of the water supply pipe is located above the condensing tank, and the lower end thereof is submerged in water; the side wall at the lower end of the water supply pipe extends
AO 18.07.1061 NL horizontally to form a water intake disc 81 having a diameter larger than the water supply pipe, and the water intake disc is opposite to the vessel forward direction; therefore, partial high pressure is formed in the water intake disc when the vessel travels forward, the water is forced to enter the water supply pipe, the water going out of the upper end of the water supply pipe is sprinkled on the outer wall of the condensing tank, and the water on the condensing tank is evaporated more rapidly when the vessel travels, and thus the temperature of the condensing tank can be further lowered. By using the partial high pressure formed at the lower end of the water supply pipe during vessel travel, when the vessel travels, external water can be poured on the condensing tank which can be surely at lower temperature through water evaporation; therefore, water contained in the air filtered by the water quality filter mesh can be mostly condensed in the condensing tank, thus reducing content of water vapor entering the compressor.
A warm coil 9 is arranged in the buffering tank, and warm exhaust air emitted from the gas turbine is supplied in the warm coil. The heat-containing exhaust air discharged from the gas turbine can heat the air entering the buffering tank to a certain extent, ensure that the temperature of the air entering the external pipe of the compressor is not lower than 5°C, and avoid water vapor in the air from being condensed into ice before entering the compressor and thus hitting the compressor operating at high speed.

Claims (5)

ConclusiesConclusions 1. Inrichting voor het voor-filtreren van lucht voor een scheepsgasturbine, met het kenmerk dat de inrichting een filterpatroon, een windmolen, een condensatietank en eenDevice for pre-filtering air for a marine gas turbine, characterized in that the device comprises a filter cartridge, a windmill, a condensation tank and a 5 buffertank omvat; dat een impeller neerwaarts onder de filterpatroon op een axiale notatiewijze is gerangschikt, en meerdere gat kanalen verticaal zijn opgesteld op de zijwand van de filterpatroon; de onderste uiteinden van de gat kanalen zich binnen de bodem van de filterpatroon bevinden, en de bovenste uiteinden ervan zich op de bovenste ή wand van de filterpatroon bevinden; de windmolen draaiend is opgesteld5 buffer tank; that an impeller is arranged downwardly below the filter cartridge in an axial notation manner, and a plurality of hole channels are arranged vertically on the side wall of the filter cartridge; the lower ends of the hole channels are within the bottom of the filter cartridge, and the upper ends thereof are on the upper ή wall of the filter cartridge; the windmill is arranged rotating 10 buiten de tilterpatroon, en de draaiende as ervan door de zijwand van de -filterpatroon heen dringt en op een aandrijvingswijze verbonden is met de draaiende as van de impeller; dat het fiitraat zich in het onderste deel van de filterpatroon bevindt en een luchtinlaatpij'p die hoger is dan het filtraatniveau wordt verbonden in het middengedeelte van de filterpatroon; dat de windmolen de impeller aandrijft om te10 outside the filter cartridge, and its rotating axis penetrates the side wall of the filter cartridge and is connected to the rotating axis of the impeller in a driving manner; that the filtrate is in the lower part of the filter cartridge and an air inlet pipe that is higher than the filtrate level is connected in the middle portion of the filter cartridge; that the windmill drives the impeller to 15 draaien en het fiitraat in de filterpatroon naar beneden drukt wanneer het door de wind wordt aangedreven, zodat het fiitraat omhoog beweegt in de gat kanalen en uit het bovenste deel van de filterpatroon wordt geïnjecteerd, en het fiitraat geïnjecteerd uit elk gat kanaal met elkaar botst om een filtergaas te vormen; dat het boveneinde van de filterpatroon wordt geopend en via een pijp met de condensatietank wordt verbonden,15 and push the filter in the filter cartridge downwards as it is driven by the wind, so that the filter moves up into the hole channels and is injected from the upper part of the filter cartridge, and the filter injected from each hole channel collides with each other to form a filter mesh; that the upper end of the filter cartridge is opened and connected to the condensation tank via a pipe, 20 en de condensatietank wordt verbonden met de buffertank via een pijp; dat de buffertank met de luchtcompressor van de gasturbine via een externe filterinrichting wordt verbonden; dat wanneer de luchtcompressor werkt, onderdruk wordt gevormd in de buffertank en deze wordt doorgegeven aan de lucht.inlaat.pijp aan de zijwand van de fiJteipatroon, zodat externe lacht in de filterpatroon binnenkomt, door het. filternet gaat20 and the condensation tank is connected to the buffer tank via a pipe; that the buffer tank is connected to the air compressor of the gas turbine via an external filter device; that when the air compressor is operating, underpressure is formed in the buffer tank and it is passed to the air inlet pipe on the side wall of the filter cartridge, so that external laughs enter the filter cartridge through it. filtering 25 en. in de condensatietank binnenkomt, het fiitraat dat zich in de lucht bevindt gecondenseerd wordt in de condensatietank, en dan de lucht de buffertank binnengaat om lucht aan de externe filterinrichting en luchteompressor toe te voeren.25 and. entering the condensation tank, the filtrate contained in the air is condensed in the condensation tank, and then the air enters the buffer tank to supply air to the external filter device and air compressor. 2. Inrichting voor het voor-filtreren van lucht voor een scheepsgasturbine volgens2. Device for pre-filtering air for a marine gas turbine according to 30 conclusie 1, met het kenmerk dat een verontreinigingsfilter groter is dan de ondereinden van de gat kanalen maar lager dan de impeller horizontaal onder de filterpatroon is aan gebracht.Claim 1, characterized in that a contamination filter is larger than the lower ends of the hole channels but is arranged below the filter cartridge lower than the impeller. AO 18.07.1061 NLAO 18.07.1061 NL 3. Inrichting voor hel voor-filtreren van lucht voor een scheepsgasturbine volgens conclusie 1, mei het kenmerk dat buiten de windmolen een afouiginrichting is aangebracht.3. A device for pre-filtering air for a marine gas turbine according to claim 1, characterized in that an exhaust device is arranged outside the windmill. 5 4. Inrichting voor het voor-filtreren van lucht voor een scheepsgasturbine volgens conclusie 1, met het kenmerk dat de condensatietank een tanklichaam is. dat aan cle buitenzijde is voorzien van een veelvoud aan vinnen en zich buiten het vaartuig weg van zonlicht bevindt.4. Device for pre-filtering air for a marine gas turbine according to claim 1, characterized in that the condensation tank is a tank body. that on the outside is provided with a plurality of fins and is outside of the vessel away from sunlight. 10 5. Inrichting voor het voor-filtreren van lucht voor een scheepsgasturbine volgens conclusie 4, mei het kenmerk dat aan één zijde van de condensatietank een watertoevoerleiding is aangebracht, het boveneinde van de watertoevoerleiding zich boven de condensatietank bevindt, en het ondereinde daarvan ondergedompeld is in water; de zijwand aan het onderste uiteinde van de watertoevoerpijp zich horizontaal5. Device for pre-filtering air for a marine gas turbine according to claim 4, characterized in that a water supply line is arranged on one side of the condensation tank, the upper end of the water supply line is above the condensation tank, and the lower end thereof is submerged in water; the side wall at the lower end of the water supply pipe is horizontal 15 uitstrekt om een waterinlaatschijf te vormen met een diameter groter dan de watertoevoerpijp, en de waterinlaatschijf tegenovergesteld is aan.de voorwaartse richting van het vaartuig; dat daarom een gedeeltelijk hoge druk wordt gevormd in de waterinlaatschijf wanneer het vaartuig naai' voren beweegt, het water gedwongen wordt om de watertoevoerpijp binnen te gaan, het water dat uit het boveneinde van de15 to form a water inlet disc with a diameter larger than the water supply pipe, and the water inlet disc is opposite to the forward direction of the vessel; whereas, therefore, a partial high pressure is created in the water inlet disc when the vessel is sewing forward, the water is forced to enter the water supply pipe, the water emerging from the upper end of the 20 watertoevoerpijp is gesprenkeld op de buitenwand van de condensatietank, en het water op de condensatietank sneller is verdampt wanneer het vaartuig reist, en de temperatuur van de condensatietank dus verder kan worden verlaagd.The water supply pipe is sprinkled on the outer wall of the condensation tank, and the water on the condensation tank is evaporated faster as the vessel travels, and the temperature of the condensation tank can thus be further reduced. 6. Inrichting, voor het voor-filtreren van lucht voor een scheepsgasturbine volgens6. Device for pre-filtering air for a marine gas turbine according to 25 conclusie 1, met het kenmerk dat in de buffertank een warme spoel is aangebracht, en warme afvoerlucht, uitgezonden door de gasturbine, in de warme spoel wordt geleid.Claim 1, characterized in that a hot coil is arranged in the buffer tank, and hot exhaust air, emitted from the gas turbine, is introduced into the hot coil.
NL2021295A 2017-12-21 2018-07-12 An air pre-filtering device for marine gas turbine NL2021295B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711393758.6A CN108252808A (en) 2017-12-21 2017-12-21 A kind of ship gas turbine air pre-filtrating equipment

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NL2021295B1 true NL2021295B1 (en) 2018-12-14

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JPH08260942A (en) * 1995-03-28 1996-10-08 Hideo Yoshikawa Emission control device
US9719423B2 (en) * 2012-09-04 2017-08-01 General Electric Company Inlet air chilling system with humidity control and energy recovery
CN103470379B (en) * 2013-09-09 2016-02-17 无锡金龙石化冶金设备制造有限公司 Combined energy-saving type Inlet Air Cooling System of Gas Turbine
US20160237902A1 (en) * 2013-11-05 2016-08-18 Jianmin Zhang Gas turbine inlet air conditioning coil system
CN104154772A (en) * 2014-08-07 2014-11-19 哈尔滨工程大学 Marine immersed type porous medium condenser
KR20170133066A (en) * 2016-05-25 2017-12-05 (주)성신엔스텍 Equipped with an anti-icing device for maritime gas turbine intake system

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