CN107061314A - The low-pressure compressor changed a social system using retired engine - Google Patents

The low-pressure compressor changed a social system using retired engine Download PDF

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Publication number
CN107061314A
CN107061314A CN201710190544.2A CN201710190544A CN107061314A CN 107061314 A CN107061314 A CN 107061314A CN 201710190544 A CN201710190544 A CN 201710190544A CN 107061314 A CN107061314 A CN 107061314A
Authority
CN
China
Prior art keywords
low
pressure compressor
pressure
grade
stator
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201710190544.2A
Other languages
Chinese (zh)
Inventor
崔荣繁
王慧
相宏伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen zhongguanneng Gas Turbine Technology Co., Ltd
Original Assignee
SHENYANG GUANNENG GAS TURBINE TECHNOLOGY CO LTD
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 SHENYANG GUANNENG GAS TURBINE TECHNOLOGY CO LTD filed Critical SHENYANG GUANNENG GAS TURBINE TECHNOLOGY CO LTD
Priority to CN201710190544.2A priority Critical patent/CN107061314A/en
Publication of CN107061314A publication Critical patent/CN107061314A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00Axial-flow pumps
    • F04D19/02Multi-stage pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/26Rotors specially for elastic fluids
    • F04D29/32Rotors specially for elastic fluids for axial flow pumps
    • F04D29/34Blade mountings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/40Casings; Connections of working fluid
    • F04D29/52Casings; Connections of working fluid for axial pumps
    • F04D29/54Fluid-guiding means, e.g. diffusers
    • F04D29/541Specially adapted for elastic fluid pumps

Abstract

A kind of low-pressure compressor changed a social system using retired engine, belong to gas turbine technology field, including inlet casing, low-pressure compressor stator component, low-pressure compressor rotor, newly the level work blade of low-pressure compressor the 1st 4 is designed with the basis of prototype, low-pressure compressor other structures are constant, by redesigning blade type face, on the premise of tenon shape invariance is kept, increase the angle of leaf chord length and axis, and then change the inlet air flow angle for entering stator blade below, make air-flow separation reduction, increase low-pressure compressor efficiency, and then improve low-pressure compressor overall pressure tatio, low-pressure compressor steady operation under compared with the prototype more slow-speed of revolution can be made, overall pressure tatio and efficiency on this operating point are improved simultaneously.

Description

The low-pressure compressor changed a social system using retired engine
Technical field
The invention belongs to gas turbine technology field, more particularly to a kind of low pressure changed a social system using retired engine is calmed the anger Machine.
Background technology
With domestic gas turbine industry flourish, the deep application of gas turbine advanced design technology, high-performance, The gas turbine of high reliability continuously emerges, and is remained high as the manufacturing cost of core component compressor.At the same time, combustion gas Turbine product market competition increasingly sharpens, and user requires more and more higher.Gas turbine homogeneity, it is similar and meet user using will Under conditions of asking, gas turbine price often turns into the sole indicator that can market and user receive.The combustion of existing market sale Gas-turbine is higher due to manufacturing cost, can improve after-sale service and price for repairing, be increased burden to user.Current user has been difficult to connect High gas turbine price is received, market receiving degree is poor.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of low-pressure compressor changed a social system using retired engine, Its brand-new design low-pressure compressor working-blade blade type face on the basis of former retired engine low-pressure compressor, forms level pressure Than bigger working-blade, and blade tenon structure is constant, meanwhile, low-pressure compressor other structures are constant, can improve and calm the anger Machine stagnation pressure when efficiency, gas turbine performance can have a distinct increment relatively compared with the product of power grade.In addition, being sent out by reducing Motivation rotating speed, it is ensured that can be in lower working condition reliably working in gas turbine.
The present invention the technical scheme used for:The low-pressure compressor changed a social system using retired engine, including inlet casing, Low-pressure compressor stator component, low-pressure compressor rotor is characterized in that:Low-pressure compressor rotor is by the 1st to 4 level work leaf Piece and the 1st to 4 grade of disk composition, the 1st to 4 grade of disk of low-pressure compressor rotor are correspondingly arranged at low-pressure compressor rotor the 1st respectively Below to 4 level work blades, each working-blade lower end is provided with swallow-tail form tenon, and tenon is corresponding with low-pressure compressor rotor The 1st to 4 grade of disk on tongue-and-groove connection.
Low-pressure compressor stator component by the 1st grade of casing of low-pressure compressor, the 1st grade of stator casing component of low-pressure compressor, The 4th grade of the 2nd grade of stator casing component of low-pressure compressor, low-pressure compressor 3rd level stator casing component and low-pressure compressor and go out Mouth stator casing component composition;Calmed the anger per one-level low-pressure compressor stator casing component by low-pressure compressor stator blade and low pressure Machine stator casing is constituted.
Compared with prior art, beneficial effects of the present invention are:
1. the implementation of the present invention can effectively play increase overall pressure tatio in terms of compressor part, the work of compressor efficiency is improved With relatively in the past directly using retired engine low-pressure compressor, both prevented causes primary motivation low pressure pressure because operating point is reduced Mechanism of qi overall pressure tatio is reduced, the problem of efficiency is reduced, while effectively improving gas turbine functional reliability again, increases the gas turbine longevity Life.
2. compared with newly design low-pressure compressor, performance is similar with reliable, but the present invention is because of only new development work blade, Remaining structure directly utilizes retired engine resource, effectively reduces manufacturing cost.
Brief description of the drawings
Fig. 1 is structural representation of the invention;
Fig. 2 is H-H directions sectional view in Fig. 1;
Fig. 3 is the level work blade new construction of low-pressure compressor the 1st and prototype architectural difference schematic diagram;
Reference is as follows:1. inlet casing, 11. adjustable vanes, 2. low-pressure compressor stator components, 21. low-pressure compressors 1st grade of casing, the 1st grade of stator casing component of 22. low-pressure compressors, the 1st grade of stator blade of 221. low-pressure compressors, 222. low pressure The 1st grade of stator casing of compressor, the 2nd grade of stator casing component of 23. low-pressure compressors, the 2nd grade of stator leaf of 231. low-pressure compressors Piece, the 2nd grade of stator casing of 232. low-pressure compressors, 24. low-pressure compressor 3rd level stator casing components, 241. low-pressure compressors 3rd level stator blade, 242. low-pressure compressor 3rd level stator casings, the 4th grade of 25. low-pressure compressors and outlet stator casing group Part, 3. low-pressure compressor rotors, 31. the 1st level work blades, the 1st grade of disk of 32. low-pressure compressors, 33. the 2nd level work blades, 34. the 2nd grade of disk of low-pressure compressor, 35. 3rd level working-blades, 36. low-pressure compressor 3rd level disks, 37. the 4th level work leaves Piece, the 4th grade of disk of 38. low-pressure compressors.
Embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
Embodiment:As shown in figure 1, the present invention is the low-pressure compressor changed a social system using retired engine, including inlet casing 1st, low-pressure compressor stator component 2, low-pressure compressor rotor 3, wherein:Low-pressure compressor rotor is by the 1st to 4 level work blade (31,33,35,37)With the 1st to 4 grade of disk(32,34,36,38)Composition, the 1st to 4 grade of disk of low-pressure compressor rotor is corresponded to respectively It is arranged on below the level work blade of low-pressure compressor rotor the 1st to 4, each working-blade lower end is provided with swallow-tail form tenon, Tongue-and-groove connection on tenon the 1st to 4 grade of disk corresponding with low-pressure compressor rotor, low-pressure compressor stator component 2 is by low pressure pressure The 1st grade of casing 21 of mechanism of qi, the 1st grade of stator casing component 22 of low-pressure compressor, the 2nd grade of stator casing component 23 of low-pressure compressor, The 4th grade of low-pressure compressor 3rd level stator casing component 24 and low-pressure compressor and outlet stator casing component 25 are constituted, for reduction Manufacturing cost, structure and certain retired engine low-pressure compressor structure(Hereinafter referred to as prototype)It is identical, it can use completely.
The level work blade of low-pressure compressor the 1st to 4(31,33,35,37)For new design structure, for reduction manufacturing cost and Functional reliability is improved, low-pressure compressor disk is identical with prototype structure, so new design work blade(31,33,35, 37)Tenon structure is constant, and blade and blade height degree is identical with certain retired engine low-pressure compressor original structure, and leaf chord length is with starting The angle α of arbor line increases along blade direction compared with prototype, and increased value is raised from blade root to blade tip.
When gas turbine works, the more former retired engine working speed of working speed declines 10%, such low-pressure compressor The exit flow angle α of working-blades at different levels will be unable to be consistent with low-pressure compressor stator blade stagger angle β, can make Air-flow produces larger separation at stator blade back, and air mass flow can reduce compressor overall pressure tatio and efficiency while reduction.
By changing the angle α of leaf chord length and engine axis, working-blade exit flow absolute velocity is set to occur angle Degree change, is more nearly with stator blade stagger angle β, and stator blade is not likely to produce air-flow separation, improves low-pressure compressor Efficiency.Simultaneously because the angle α of working-blade chord length and engine axis compared with the increased value of original structure from blade root to blade tip liter Height, increased blade twist angle, improves low-pressure compressor overall pressure tatio.
By Pneumatic Calculation, in the state of reduction low-pressure compressor working speed 10%, keep intake air flow basic Constant, using the low-pressure compressor after changing, overall pressure tatio can improve 14%-16%, and efficiency improves 10-12%.
By Strength co-mputation, low-pressure compressor working-blade root needs to thicken compared with original structure, because tenon structure can not The angle α of change, low-pressure compressor working-blade root chord length and engine axis is less compared with prototype increase or is basically unchanged, Using root of blade type face without departing from blade tenon as principle, in view of the separation of root of blade air-flow is insensitive, therefore in proof strength On the premise of overall pressure tatio and efficiencies can receive.
The installation process of the present invention is as follows:
First, the 2nd grade of disk 34 of the 1st grade of disk 32 of the low-pressure compressor with preceding axle journal and low compressor is welded together, then by band The low-pressure compressor 3rd level disk 36 of rear shaft neck is bolted with it, then by the 4th grade of disk 38 of low-pressure compressor and its pass through spiral shell Tether and connect, be then respectively mounted newly-designed 1-4 level work blades(31,33,35,37), thus form low-pressure compressor Rotor 3.
Secondly, the inlet casing 1 with adjustable vane is placed vertically on the table, low-pressure compressor rotor 3 is vertical Insert in inlet casing 1, axle journal before low-pressure compressor rotor is connected with inlet casing 1 by stick roller bearing, set using special The standby relative distance for ensureing inlet casing 1 and low-pressure compressor rotor 3.
Then, the 1st grade of low-pressure compressor casing 21 is loaded on inlet casing 1 vertically, the 1st grade of stator leaf of low-pressure compressor Piece component 221 is made up of multiple stator blades, and component is 2 semi-circular structures, by the 1st grade of stator vane assembly of low-pressure compressor Insert, and determined by the annular groove on the 1st grade of casing 21 of low-pressure compressor between low-pressure compressor the 1st, 2 level work blades respectively Position.
Afterwards, the 1st grade of stator casing 222 of low-pressure compressor is filled straight down, is enclosed on the 1st grade of stator leaf of low-pressure compressor On piece component 221, positioned by the outer surface of stator vane assembly 221.Similarly, the 2nd grade of stator blade group of low-pressure compressor is filled Part 231, the 2nd grade of stator casing 232 of low-pressure compressor, low-pressure compressor 3rd level stator vane assembly 241, low-pressure compressor the 3rd Level stator casing 242.
Finally, the 4th grade of stator of low-pressure compressor and outlet casing component 25 are inserted vertically into low-pressure compressor 3rd level stator In rabbet groove in casing 242, ensure centering.
Operation principle of the present invention:
The present invention new design level work blade of low pressure the 1st to 4 on the basis of former retired low-pressure compressor(31,33,35,37), Working speed reduction by 10% in the state of, make air from inlet casing 1 by import adjustable vane 11 axially into rear low pressure pressure After the level work blade 31 of mechanism of qi the 1st, the absolute velocity C2 of air direction changes, and is changed to C1, speed C1 direction is right Answer basically identical with stagger angle β in the middle part of the 1st grade of stator blade, holding does not occur along most of region of blade radial direction Air-flow is separated.
After air is by the 1st grade of stator vane assembly 221 of low-pressure compressor, into the level work blade of low-pressure compressor the 2nd 33, similarly, by changing the angle α of the level work leaf chord length of low-pressure compressor the 2nd and engine axis, make vane inlet air-flow It is more smooth to enter the 2nd level work blade, it is to avoid mass air flow is separated, improve compressor operating efficiency.
Air flows into the 4th grade of stator of low-pressure compressor and outlet casing 25 by the level work blade 37 of low-pressure compressor the 4th Axially discharge afterwards.
Further, since the angle α of low-pressure compressor 1-4 level works leaf chord length and engine axis is compared with original structure increase And increase from blade root to blade tip direction difference, make blade twist angle compared with original structure increase, pass air through after working-blade absolutely To the increase of speed circumferential component variable quantity, single-stage compressor pressure ratio is improved, and then add low-pressure compressor overall pressure tatio.

Claims (4)

1. a kind of low-pressure compressor changed a social system using retired engine, including inlet casing, low-pressure compressor stator component, low pressure Compressor rotor, it is characterised in that:Low-pressure compressor rotor is made up of the 1st to 4 level work blade and the 1st to 4 grade of disk, low pressure pressure 1st to 4 grade of disk of mechanism of qi rotor is correspondingly arranged at below the level work blade of low-pressure compressor rotor the 1st to 4 respectively, each work Blade lower end is provided with the tongue-and-groove connection on swallow-tail form tenon, tenon the 1st to 4 grade of disk corresponding with low-pressure compressor rotor.
2. a kind of low-pressure compressor changed a social system using retired engine according to claim 1, it is characterised in that:Low pressure pressure Mechanism of qi stator component is by the 1st grade of casing of low-pressure compressor, the 1st grade of stator casing component of low-pressure compressor, low-pressure compressor the 2nd The 4th grade of level stator casing component, low-pressure compressor 3rd level stator casing component and low-pressure compressor and outlet stator casing component Composition.
3. a kind of low-pressure compressor changed a social system using retired engine according to claim 2, it is characterised in that:Per one-level Low-pressure compressor stator casing component includes low-pressure compressor stator blade and low-pressure compressor stator casing.
4. a kind of low-pressure compressor changed a social system using retired engine according to claim 3, it is characterised in that:Enter mechanism of qi Casket is arranged on low-pressure compressor foremost, is installed behind inlet casing and connects low-pressure compressor behind adjustable vane, adjustable vane Annular groove is provided with 1st grade of casing, the 1st grade of casing of low-pressure compressor, the 1st grade of casing of low-pressure compressor is vertically arranged into mechanism of qi Inside casket, the 1st grade of stator blade of low-pressure compressor is made up of multiple stator blades, and the 1st grade of stator blade of low-pressure compressor is pacified Fixed between low-pressure compressor the 1st, 2 level work blades, and by the annular groove on the 1st grade of casing of low-pressure compressor, low pressure Profile For Compressor Stator component is arranged alternately with the working-blade of low-pressure compressor rotor and is connected.
CN201710190544.2A 2017-03-28 2017-03-28 The low-pressure compressor changed a social system using retired engine Pending CN107061314A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710190544.2A CN107061314A (en) 2017-03-28 2017-03-28 The low-pressure compressor changed a social system using retired engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710190544.2A CN107061314A (en) 2017-03-28 2017-03-28 The low-pressure compressor changed a social system using retired engine

Publications (1)

Publication Number Publication Date
CN107061314A true CN107061314A (en) 2017-08-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710190544.2A Pending CN107061314A (en) 2017-03-28 2017-03-28 The low-pressure compressor changed a social system using retired engine

Country Status (1)

Country Link
CN (1) CN107061314A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108223429A (en) * 2017-09-30 2018-06-29 中国航发沈阳发动机研究所 The fancase of the domain not fault wall
CN108953232A (en) * 2018-07-20 2018-12-07 大连海事大学 A kind of non-axisymmetric distribution stator blade axial-flow compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108223429A (en) * 2017-09-30 2018-06-29 中国航发沈阳发动机研究所 The fancase of the domain not fault wall
CN108953232A (en) * 2018-07-20 2018-12-07 大连海事大学 A kind of non-axisymmetric distribution stator blade axial-flow compressor

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Effective date of registration: 20200306

Address after: Room 223, building 2, No. 1, Shuanghu North Road, Xiang'an District, Xiamen City, Fujian Province

Applicant after: Xiamen zhongguanneng Gas Turbine Technology Co., Ltd

Address before: 110043 Liaoning Province, Shenyang City District Li neighbors Road No. 11 North Lane

Applicant before: Shenyang Guanneng Gas Turbine Technology Co.,Ltd.

TA01 Transfer of patent application right