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KR20120070103A - Hybrid type centrifugal compressor - Google Patents

Hybrid type centrifugal compressor Download PDF

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Publication number
KR20120070103A
KR20120070103A KR1020100131521A KR20100131521A KR20120070103A KR 20120070103 A KR20120070103 A KR 20120070103A KR 1020100131521 A KR1020100131521 A KR 1020100131521A KR 20100131521 A KR20100131521 A KR 20100131521A KR 20120070103 A KR20120070103 A KR 20120070103A
Authority
KR
South Korea
Prior art keywords
centrifugal compressor
shroud impeller
casing
impeller
shroud
Prior art date
Application number
KR1020100131521A
Other languages
Korean (ko)
Other versions
KR101207218B1 (en
Inventor
이성룡
송재욱
홍동민
김형윤
이창용
Original Assignee
두산중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 두산중공업 주식회사 filed Critical 두산중공업 주식회사
Priority to KR1020100131521A priority Critical patent/KR101207218B1/en
Publication of KR20120070103A publication Critical patent/KR20120070103A/en
Application granted granted Critical
Publication of KR101207218B1 publication Critical patent/KR101207218B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/083—Sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/12—Kind or type gaseous, i.e. compressible
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: A hybrid type centrifugal compressor is provided to prevent movement having rotational elements in a whole casing because the movement generated due to a shroud impeller affects only in a space between a sealing cover and the shroud impeller so that the whole movement can be stabilized. CONSTITUTION: A hybrid type centrifugal compressor(100) comprises a casing(110), an axial flow compressor stator(120), and a centrifugal compressor shroud impeller(130). The axial flow compressor stator is installed inside the casing. The centrifugal compressor shroud impeller is installed in the rear part of the axial flow compressor stator. A sealing cover(150) covering the front part of the shroud impeller is fixed to a diffuser(140) where the casing is assembled A labyrinth seal(131) is formed in the front outer circumference leading end part of the shroud impeller. A sealing member(160) is installed between the inner circumference of the sealing cover and the labyrinth seal.

Description

Hybrid centrifugal compressor {Hybrid type centrifugal compressor}

The present invention relates to a centrifugal compressor for a hybrid gas turbine combined with an axial compressor and a centrifugal compressor, and more particularly, to stabilize the flow due to the shroud impeller rotation, and to reduce the amount of air leaking from the outlet of the shroud impeller. To minimize the compressor performance.

In general, a centrifugal compressor converts velocity energy into pressure energy by the centrifugal force of a high-speed rotating impeller and compresses it. A axial compressor has an almost concentric shaft with a streamline passing through the impeller. It is a compressor on the cylindrical surface of.

The centrifugal compressor is mainly used in a variety of refrigeration and air conditioning equipment, the axial compressor is high efficiency bar is mainly used as a high-power compressor, such as a jet engine or a gas turbine for land vessels, the present invention is a centrifugal compressor in the rear of the axial compressor It relates to a hybrid centrifugal compressor combined.

Meanwhile, a general centrifugal compressor includes an impeller for transmitting a force to the fluid; A diffuser configured to increase the static pressure instead of lowering the dynamic pressure component among the voltage components raised due to the force received from the impeller; It consists of a scroll or collector, which collects the flow through the diffuser and delivers it to the next stage.

In the hybrid type centrifugal compressor in which the axial compressor and the centrifugal compressor are related to the present invention, the centrifugal compressor shroud impeller is installed at the rear of the axial compressor stator installed inside the casing. It has a form.

However, in the conventional hybrid centrifugal compressor, the flow in the entire casing has a rotating component due to the instability of the surrounding flow generated as the shroud impeller rotates, so that the flow passing through the axial compressor stator flows into the shroud impeller. In this case, the flow of the shroud impeller deteriorates due to the inflow of the flow into the incomplete state, and the inlet flow of the shroud impeller is reduced as some of the flow through the shroud impeller enters the inlet of the shroud impeller. There was a problem of becoming unstable.

The present invention has been made in view of the conventional situation as described above, the purpose of which is a hybrid in which a centrifugal compressor shroud impeller is installed at the rear of an axial compressor stator installed inside a casing. In the centrifugal compressor of the hybrid type, it is possible to stabilize the flow due to the rotation of the shroud impeller and to provide a hybrid centrifugal compressor which can improve the compressor performance by minimizing the amount of air leaking from the exit of the shroud impeller. It is in

In order to achieve the above object, the present invention provides a hybrid centrifugal compressor in which a shroud impeller is installed at the rear of an axial compressor stator installed inside a casing. Fasten and install a sealing cover covering the front part of the shroud impeller to the diffuser to which the casing is assembled, and attach a labyrinth seal to the front outer periphery of the shroud impeller installed inside the casing. The sealing member is formed between the labyrinth seal and the inner circumferential surface of the sealing cover.

In the hybrid centrifugal compressor of the present invention, the sealing cover may have a fastening portion fastened to the diffuser through a bolt at an outer side thereof, and a sealing member support portion at which the sealing member is supported at the inner side thereof.

According to the present invention, the flow from the outlet of the shroud impeller can be minimized from entering the inlet of the shroud impeller, and the flow generated by the shroud impeller is only influenced in the space between the sealing cover and the shroud impeller. Since it does not generate a flow having a rotating component throughout the casing to stabilize the entire flow it can be achieved that the performance of the shroud impeller and hybrid centrifugal compressor can be significantly improved .

1 is a longitudinal sectional view showing main parts of one embodiment of the present invention;
2 is a perspective view of the shroud impeller of the embodiment;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

1 is a longitudinal sectional view of an essential part of an embodiment of the present invention, and FIG. 2 is a perspective view of the shroud impeller of this embodiment.

1 and 2, the present invention is a centrifugal hybrid type in which a centrifugal compressor shroud impeller 130 is installed at the rear of the axial compressor stator 120 installed inside the casing 110. In configuring the compressor 100,

Fastening and installing a sealing cover 150 covering the front portion of the shroud impeller 130 to the diffuser 140 to which the casing 110 is assembled,

A labyrinth seal (131) is formed on the front outer circumferential front end of the shroud impeller (130) installed inside the casing (110),

The sealing member 160 is installed between the labyrinth seal 131 and the inner circumferential surface of the sealing cover 150.

In the illustrated embodiment, the sealing cover 150 is provided with a fastening part 151 fastened to the diffuser 140 through a bolt 171 on the outside thereof, and a sealing member support part 162 on which the sealing member 160 is supported. ) Is provided in the form provided.

In general, in the hybrid centrifugal compressor of the type combined with the axial compressor and the centrifugal compressor, there is no structural problem because there is a casing 110 without installing the sealing cover 150 on the shroud impeller 130. If the 150 is not installed, because the flow of the shroud impeller 130 rotates due to the instability of the surrounding flow, the flow in the entire casing 110 has a rotating component, so that the flow passing through the axial compressor stator 120 When the flow into the shroud impeller 130 flows in an incomplete state, thereby reducing the performance of the shroud impeller 130.

In addition, the inlet flow of the shroud impeller 130 becomes unstable as some of the flow exiting the outlet of the shroud impeller 130 enters the inlet of the shroud impeller 130.

In the hybrid centrifugal compressor of the present invention, the labyrinth seal 131 is provided in the shroud impeller 130, and the sealing cover 150 covering the front portion of the shroud impeller 130 is provided in the diffuser 140. Is installed, the sealing member 160 is installed between the labyrinth seal 131 and the sealing cover 150 that the flow from the outlet of the shroud impeller 130 is introduced into the inlet of the shroud impeller 130 It can be minimized, the flow generated by the shroud impeller 130 also affects only in the space between the sealing cover 150 and the shroud impeller 130, so that the flow having a rotational component throughout the casing 110 It is possible to stabilize the entire flow since it does not occur.

The present invention described above is not limited to the above description, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be obvious to you.

100: hybrid centrifugal compressor
110: casing
120: axial compressor stator
130: shroud impeller
131; Labyrinth seal
140: diffuser
150: sealing cover
160: sealing member

Claims (2)

In constructing a hybrid centrifugal compressor in which a centrifugal compressor shroud impeller (130) is installed at the rear of the axial compressor stator (120) installed in the casing (110),
Fastening and installing a sealing cover 150 covering the front portion of the shroud impeller 130 to the diffuser 140 to which the casing 110 is assembled,
A labyrinth seal (131) is formed on the front outer circumferential front end of the shroud impeller (130) installed inside the casing (110),
Hybrid type centrifugal compressor characterized in that the sealing member 160 is installed between the labyrinth seal 131 and the inner peripheral surface of the sealing cover 150. According to claim 1, The sealing cover 150 is provided with a fastening portion 151 which is fastened to the diffuser 140 through the bolt 171 on the outside, the sealing member support portion for supporting the sealing member 160 (inside) 162) is a hybrid centrifugal compressor characterized in that provided.
KR1020100131521A 2010-12-21 2010-12-21 Hybrid type centrifugal compressor KR101207218B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100131521A KR101207218B1 (en) 2010-12-21 2010-12-21 Hybrid type centrifugal compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100131521A KR101207218B1 (en) 2010-12-21 2010-12-21 Hybrid type centrifugal compressor

Publications (2)

Publication Number Publication Date
KR20120070103A true KR20120070103A (en) 2012-06-29
KR101207218B1 KR101207218B1 (en) 2012-12-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100131521A KR101207218B1 (en) 2010-12-21 2010-12-21 Hybrid type centrifugal compressor

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KR (1) KR101207218B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101501477B1 (en) * 2013-03-25 2015-03-12 두산중공업 주식회사 Centrifugal Compressor
KR102583275B1 (en) 2018-09-21 2023-09-26 한화파워시스템 주식회사 Shroud impeller assembly

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Publication number Publication date
KR101207218B1 (en) 2012-12-03

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