CN111013258A - Low-resistance arc-shaped air inlet filtering device inertia-stage blade of water delivery tank - Google Patents
Low-resistance arc-shaped air inlet filtering device inertia-stage blade of water delivery tank Download PDFInfo
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- CN111013258A CN111013258A CN201911347527.0A CN201911347527A CN111013258A CN 111013258 A CN111013258 A CN 111013258A CN 201911347527 A CN201911347527 A CN 201911347527A CN 111013258 A CN111013258 A CN 111013258A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
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Abstract
The invention aims to provide an inertia-stage blade of an air inlet filtering device of a low-resistance arc-shaped water delivery tank, which comprises a first water delivery unit, a second water delivery unit and a third water delivery unit, wherein the first water delivery unit is provided with a first water delivery unit and a second water delivery unit; the first water conveying unit comprises a first flow guide section and a first water conveying groove, the first flow guide section is connected with the first water conveying groove through a first transition section, and the rear part of the first water conveying groove is connected with a second transition section; the second water conveying unit comprises a second water conveying tank and a third transition section, and two ends of the second water conveying tank are respectively connected with the second transition section and the third transition section; the third water conveying unit comprises a third water conveying tank, a fourth transition section and a second flow guide section, wherein the two ends of the third water conveying tank are respectively connected with the third transition section and the fourth transition section, and the fourth transition section is connected with the second flow guide section. The outer circular arc of the water delivery groove of the cross section of the invention adopts a streamline shape and is connected with the transition sections at two ends in a tangent way, thus ensuring that the blades can obtain higher gas-liquid separation efficiency with lower total pressure loss, and having the advantages of simple structure, convenient processing, low cost and the like under the condition of low resistance requirement.
Description
Technical Field
The invention relates to an inertia stage blade, in particular to an inertia stage blade of an air inlet filtering device.
Background
The inertia stage blade is arranged in an air inlet filtering device of the gas turbine and is used for removing impurities such as solid, liquid, salt mist aerosol and the like in air. The inertia stage blades can remove most impurities, but inevitably cause a certain total pressure loss to the airflow, so that the output power and the efficiency of the gas turbine are reduced to a certain degree. The output power of the gas turbine is reduced by 0.1 percent for every 50Pa increase of the total pressure loss.
The traditional inertia-stage blade works under the working condition that the air flow speed at the inlet is 1-7 m/s.
However, with the rapid development of gas turbine technology, the output power of the gas turbine is increasing, and the inlet air amount is also increasing. Taking the LM2500 series of GE corporation as an example, data such as output power and intake air amount of the combustion engine are shown in table 1.
TABLE 1 relationship between gas turbine inlet air flow and other parameters and output power
As can be seen from table 1, the power of the LM2500 series combustion engine is increasing, and the intake air amount thereof is also increasing.
Under the condition of limited ship space, if the flow area is not increased, the further increase of the air inflow means that the flow speed of the air inlet filter device is correspondingly increased. If the conventional inertia stage is used, the total pressure loss is exceeded due to the excessively high flow speed. Then conventional inertia stage blades are not suitable. Therefore, the inertia-stage blade of the intake air filtering device is suitable for the condition of low resistance requirement.
Disclosure of Invention
The invention aims to provide an inertia-stage blade of a low-resistance arc-shaped water delivery tank air inlet filter device, which is suitable for a low-resistance condition.
The purpose of the invention is realized as follows:
the invention relates to an inertia-stage blade of a low-resistance arc-shaped water delivery tank air inlet filtering device, which is characterized in that: comprises a first water conveying unit, a second water conveying unit and a third water conveying unit; the first water conveying unit comprises a first flow guide section and a first water conveying groove, the first flow guide section is connected with the first water conveying groove through a first transition section, and the rear part of the first water conveying groove is connected with a second transition section; the second water conveying unit comprises a second water conveying tank and a third transition section, and two ends of the second water conveying tank are respectively connected with the second transition section and the third transition section; the third water conveying unit comprises a third water conveying tank, a fourth transition section and a second flow guide section, wherein the two ends of the third water conveying tank are respectively connected with the third transition section and the fourth transition section, and the fourth transition section is connected with the second flow guide section.
The present invention may further comprise:
1. the cross-section of water delivery groove includes circular arc section and straightway, and the first end of circular arc section passes through the circular arc transition and links to each other with the first end of straightway, and there is the breach in the second end of circular arc section and the second end of straightway, and the outside of circular arc section is tangent rather than adjacent changeover portion.
2. The outer ring of the arc section is an arc, the inner ring of the arc section is a line segment, the line segment is in round corner transition with one end of the arc, and the other end of the line segment is in round corner transition with the straight line section.
3. The first water conveying groove and the third water conveying groove are on the same side, the second water conveying groove is located on the opposite side of the first water conveying groove and the third water conveying groove, and the arrangement direction of the second water conveying groove is opposite to the direction of the first water conveying groove and the third water conveying groove.
4. The first flow guide section is connected with the first transition section through an arc, the angle between the first flow guide section and the first transition section is 135-180 degrees, the second flow guide section is connected with the fourth transition section through an arc, and the angle between the second flow guide section and the fourth transition section is 135-180 degrees.
5. The first water conveying unit, the second water conveying unit, the third water conveying unit and the fourth water conveying unit form blade units, and the blade units are arranged in parallel to form a blade structure.
The invention has the advantages that: the outer circular arc of the water delivery groove of the cross section of the invention adopts a streamline shape and is connected with the transition sections at two ends in a tangent way, thus ensuring that the blades can obtain higher gas-liquid separation efficiency with lower total pressure loss, and having the advantages of simple structure, convenient processing, low cost and the like under the condition of low resistance requirement.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an arrangement of the present invention in an installed state;
fig. 3 is a schematic structural view of a conventional inertia stage blade.
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 inertial-stage blade of the low-resistance arc-shaped water delivery tank air inlet filtering device is M-shaped in cross section and comprises three water delivery units, wherein the first water delivery unit comprises a flow guide section 1, a water delivery tank 3 and two transition sections 2 and 4, the second water delivery unit comprises a water delivery tank 5, transition sections 4 and 6, and the third water delivery unit comprises a water delivery tank 7, transition sections 6 and 8 and a flow guide section 9. Wherein the first and second water conveying units share the transition section 4, and the second and third water conveying units share the transition section 6. The outer structures of the three drainage grooves and the transition among the parts all adopt circular arcs so as to reduce the flow resistance loss. The outer side of the drainage groove is in streamline connection with the transition section, and the resistance of airflow is small when the airflow passes through the water delivery groove. The first, second and third flow guide sections are all in a streamline shape and are connected with the transition section in an arc shape so as to reduce the influence caused by airflow separation. The invention can reduce the total pressure loss level while ensuring the gas-water separation efficiency, and has the advantages of suitability for low-resistance working conditions, simple structure, convenient processing, low cost and the like.
The straight line section of the first transition section 2 is tangent to the arc outside the first water conveying tank 3. The straight line section of the second transition section 4 is tangent to the arc outside the second water conveying tank 5. The straight line section of the third transition section 6 is tangent to the arc outside the third water conveying tank 7.
The angle formed by the front flow guide section 1 and the first transition section 2 ranges from 135 degrees to 180 degrees. The angle formed by the second flow guide section 9 and the fourth transition section 8 ranges from 135 degrees to 180 degrees.
In the invention, each blade is generally composed of two guide sections, three drainage grooves and a transition section for connecting the three drainage grooves, and the specific structure is as follows: the outer sides of the three drainage grooves are all provided with a section of arc with a large diameter, the arc is tangent with the transition section, the inner sides of the three drainage grooves are provided with two sections of horizontal straight lines and arcs with different diameters to form the inner wall of the water conveying groove, all adjacent parts are tangent and are in smooth transition, and the transition between the inner sides and the outer sides adopts a small-diameter semicircle.
The front guide section 1 and the rear guide section 9 are both horizontally arranged.
In order to inhibit the air flow separation, the air inlet edge of the front guide flow section 1 and the air outlet edge of the rear guide flow section 9 both adopt circular arc transition instead of straight edges with clear edges.
And large-diameter circular arc transition is adopted between each transition section and each drainage groove.
Thus, the basic form of the vane is formed by the front and rear guide sections, the three drainage grooves and the four transition sections. The size of the whole blade along the through-flow direction is about 80mm, the thickness of the blade is consistent, and the thinnest part is 1.5 mm. The size can be adjusted according to actual needs on the premise of ensuring the structure.
Compared with the traditional inertia stage structure with clear edges and corners as shown in fig. 3, the inertia stage can achieve the purpose of keeping higher gas-water separation efficiency under the condition of low-resistance gas inlet, and maintain a lower total pressure loss level.
As shown in fig. 2, a plurality of such blades are arranged perpendicularly facing the incoming flow direction of the airflow, and the blades are parallel to each other and spaced at equal intervals to perform work.
The invention is used in the field of intake filtration of ships, and has the following specific functions:
when the ship sails on the sea, the air sucked by the air inlet device contains impurities such as seawater droplets, salt, aerosol and the like.
Salt is mainly present in the droplets. The inertia-stage blades perform gas-liquid separation by adopting an inertia separation principle. The mass per volume of air is much lighter than the mass per volume of liquid droplets. When airflow flows through the curved flow channel of the inertia-stage blade, the air can easily change the flow direction, and liquid drops cannot, so that the liquid drops impact the wall surface of the blade to form a water film, the water film flows downstream along the wall surface, and flows to the bottom under the action of gravity to be separated. The streamline of the section of the invention ensures that the blade can obtain higher gas-liquid separation efficiency with lower total pressure loss.
Claims (10)
1. The utility model provides a low resistance arc water delivery groove filter device inertia level blade that admits air, characterized by: comprises a first water conveying unit, a second water conveying unit and a third water conveying unit; the first water conveying unit comprises a first flow guide section and a first water conveying groove, the first flow guide section is connected with the first water conveying groove through a first transition section, and the rear part of the first water conveying groove is connected with a second transition section; the second water conveying unit comprises a second water conveying tank and a third transition section, and two ends of the second water conveying tank are respectively connected with the second transition section and the third transition section; the third water conveying unit comprises a third water conveying tank, a fourth transition section and a second flow guide section, wherein the two ends of the third water conveying tank are respectively connected with the third transition section and the fourth transition section, and the fourth transition section is connected with the second flow guide section.
2. The low resistance arc water delivery tank inlet filter device inertial stage blade of claim 1, wherein: the cross-section of water delivery groove includes circular arc section and straightway, and the first end of circular arc section passes through the circular arc transition and links to each other with the first end of straightway, and there is the breach in the second end of circular arc section and the second end of straightway, and the outside of circular arc section is tangent rather than adjacent changeover portion.
3. The low resistance arc water delivery tank inlet filter device inertial stage blade of claim 2, wherein: the outer ring of the arc section is an arc, the inner ring of the arc section is a line segment, the line segment is in round corner transition with one end of the arc, and the other end of the line segment is in round corner transition with the straight line section.
4. The low resistance arc water transfer tank inlet filter inertial stage blade of any one of claims 1-3, wherein: the first water conveying groove and the third water conveying groove are on the same side, the second water conveying groove is located on the opposite side of the first water conveying groove and the third water conveying groove, and the arrangement direction of the second water conveying groove is opposite to the direction of the first water conveying groove and the third water conveying groove.
5. The low resistance arc water transfer tank inlet filter inertial stage blade of any one of claims 1-3, wherein: the first flow guide section is connected with the first transition section through an arc, the angle between the first flow guide section and the first transition section is 135-180 degrees, the second flow guide section is connected with the fourth transition section through an arc, and the angle between the second flow guide section and the fourth transition section is 135-180 degrees.
6. The low resistance arc water delivery tank inlet filter inertia stage blade of claim 4, wherein: the first flow guide section is connected with the first transition section through an arc, the angle between the first flow guide section and the first transition section is 135-180 degrees, the second flow guide section is connected with the fourth transition section through an arc, and the angle between the second flow guide section and the fourth transition section is 135-180 degrees.
7. The low resistance arc water transfer tank inlet filter inertial stage blade of any one of claims 1-3, wherein: the first water conveying unit, the second water conveying unit, the third water conveying unit and the fourth water conveying unit form blade units, and the blade units are arranged in parallel to form a blade structure.
8. The low resistance arc water delivery tank inlet filter inertia stage blade of claim 4, wherein: the first water conveying unit, the second water conveying unit, the third water conveying unit and the fourth water conveying unit form blade units, and the blade units are arranged in parallel to form a blade structure.
9. The low resistance arc water delivery tank inlet filter device inertial stage blade of claim 5, wherein: the first water conveying unit, the second water conveying unit, the third water conveying unit and the fourth water conveying unit form blade units, and the blade units are arranged in parallel to form a blade structure.
10. The low resistance arc water delivery tank inlet filter device inertial stage blade of claim 6, wherein: the first water conveying unit, the second water conveying unit, the third water conveying unit and the fourth water conveying unit form blade units, and the blade units are arranged in parallel to form a blade structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347527.0A CN111013258A (en) | 2019-12-24 | 2019-12-24 | Low-resistance arc-shaped air inlet filtering device inertia-stage blade of water delivery tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911347527.0A CN111013258A (en) | 2019-12-24 | 2019-12-24 | Low-resistance arc-shaped air inlet filtering device inertia-stage blade of water delivery tank |
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|---|---|
| CN111013258A true CN111013258A (en) | 2020-04-17 |
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| CN201911347527.0A Pending CN111013258A (en) | 2019-12-24 | 2019-12-24 | Low-resistance arc-shaped air inlet filtering device inertia-stage blade of water delivery tank |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562818A (en) * | 1979-06-18 | 1981-01-13 | Mitsubishi Heavy Ind Ltd | Mist eliminator |
| US4557740A (en) * | 1984-09-10 | 1985-12-10 | Allis-Chalmers Corporation | Weather louver |
| US20100154980A1 (en) * | 2008-09-22 | 2010-06-24 | Peerless Mfg. Co. | Composite vane and method of manufacture |
| CN202113704U (en) * | 2011-06-23 | 2012-01-18 | 哈尔滨汽轮机厂辅机工程有限公司 | Steam-water separating device used for million-kilowatt-class nuclear power MSR (moisture separator reheater) |
| CN103291199A (en) * | 2013-06-19 | 2013-09-11 | 南南铝业股份有限公司 | Louver |
| KR20130107988A (en) * | 2012-03-23 | 2013-10-02 | (주)지브텍 | Water remove louver |
| CN105749627A (en) * | 2016-04-13 | 2016-07-13 | 上海发电设备成套设计研究院 | Steam-water separator formed by corrugated plates with unequal distances |
-
2019
- 2019-12-24 CN CN201911347527.0A patent/CN111013258A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562818A (en) * | 1979-06-18 | 1981-01-13 | Mitsubishi Heavy Ind Ltd | Mist eliminator |
| US4557740A (en) * | 1984-09-10 | 1985-12-10 | Allis-Chalmers Corporation | Weather louver |
| US20100154980A1 (en) * | 2008-09-22 | 2010-06-24 | Peerless Mfg. Co. | Composite vane and method of manufacture |
| CN202113704U (en) * | 2011-06-23 | 2012-01-18 | 哈尔滨汽轮机厂辅机工程有限公司 | Steam-water separating device used for million-kilowatt-class nuclear power MSR (moisture separator reheater) |
| KR20130107988A (en) * | 2012-03-23 | 2013-10-02 | (주)지브텍 | Water remove louver |
| CN103291199A (en) * | 2013-06-19 | 2013-09-11 | 南南铝业股份有限公司 | Louver |
| CN105749627A (en) * | 2016-04-13 | 2016-07-13 | 上海发电设备成套设计研究院 | Steam-water separator formed by corrugated plates with unequal distances |
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Application publication date: 20200417 |