CN105201873A - Multi-stage high-pressure centrifugal type compressor - Google Patents

Multi-stage high-pressure centrifugal type compressor Download PDF

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Publication number
CN105201873A
CN105201873A CN201510647531.4A CN201510647531A CN105201873A CN 105201873 A CN105201873 A CN 105201873A CN 201510647531 A CN201510647531 A CN 201510647531A CN 105201873 A CN105201873 A CN 105201873A
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supercharging
impeller
suction tude
vane group
speed
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CN201510647531.4A
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CN105201873B (en
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常胜
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Abstract

The invention relates to a multi-stage high-pressure centrifugal type compressor. A first air inlet pipe and a second air inlet pipe are symmetrically and movably installed on the two sides of the center of a shell. The inner side of the first air inlet pipe is fixedly connected with a first pressurizing impeller, the inner side of the second air inlet pipe is fixedly connected with a second pressurizing impeller, and a first pressurizing blade set and a second pressurizing blade set are arranged on the inner side of the first pressurizing impeller and the inner side of the second pressurizing impeller respectively and are distributed in a staggered mode. The shell is provided with an exhaust pipe, a first driven gear is fixedly installed outside the first air inlet pipe and connected with a first power input device, and a second driven gear is fixedly installed outside the second air inlet pipe and connected with a second power input device. Multi-stage variable air pressure can be provided, multi-stage high-strength air flow adjustment is achieved through less economic investment, and good social and economic benefits are achieved.

Description

A kind of multistage pressure centrifugal compressor
Technical field
The present invention relates to mechanical field, be specifically related to a kind of compressor, particularly a kind of multistage pressure centrifugal compressor.
Background technique
Very crucial equipment in the industries such as multistage centrifugal compressor is as chemical product such as petroleum refinings also known as turbo-compressor, refrigeration.In multistage centrifugal compressor, impeller is generally series arrangement's form, and its basic functional principle under the driving of driving machine, does High Rotation Speed by being loaded on blade-carrying impeller on axle.Blade makes gas obtain kinetic energy to air work, air-flow changes pressure energy from upper level impeller outlet into after the flowing of Diffuser diffusion, then through bend, return channel enters into next stage impeller inlet, so through multistage-combination, the compression that interstage pressure increases progressively obtains the final pressure required for gas.
Existing this tandem impeller arrangement form, all seal arrangement is needed in case gas backstreaming between every grade of impeller, Diffuser is also needed to expand, bend, return channel etc., cause and make it have complex structure bulky, heaviness, manufacturing process is complicated, and required precision is higher, the shortcomings such as cost is higher, and efficiency is not high.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of simple and compact for structure, small and exquisite, lightweight applied widely, cheap, work and operational efficiency much higher level high pressure centrifugal compressor, for overcoming the defect of existing centrifugal compressor.
Technological scheme of the present invention is achieved in that a kind of multistage pressure centrifugal compressor, comprise base, be fixedly mounted on the shell fixed base on base, be fixedly mounted on the shell on shell fixed base top, the center bilateral symmetry of described shell is movably installed with the first suction tude and the second suction tude, the inner side of the first suction tude is fixedly connected with the first supercharging impeller, the inner side of the second suction tude is fixedly connected with the second supercharging impeller, the inner side of the first supercharging impeller and the second supercharging impeller is respectively arranged with the first supercharging vane group and the second supercharging vane group of interlaced distribution, shell is provided with outlet pipe, the external stability of the first described suction tude is provided with the first driven gear, first driven gear is connected with the first power input device, the external stability of the second described suction tude is provided with the second driven gear, second driven gear is connected with the second power input device.
The first described power input device comprises the first speed-adjustable motor, the output terminal of the first speed-adjustable motor is installed with the first driving gear, first driving gear and the first driven gear engage each other, the second described power input device comprises the second speed-adjustable motor, the output terminal of the second speed-adjustable motor is installed with the second driving gear, second driving gear and the second driven gear engage each other, be provided with bearing in the bottom of the first speed-adjustable motor and the second speed-adjustable motor, bearing is fixedly mounted on above the base of shell fixed base both sides.
The central position that described shell is made up of the first housing and the second housing offers the groove-like hollow cavity structure of the thick middle thin edge of through hole, first supercharging impeller is movably arranged on the inner side of the first housing, second supercharging impeller is movably arranged on the inner side of the second housing, described outlet pipe is fixedly mounted on the first housing or the second housing, outlet pipe is connected with exhaust port, and supercharging storehouse is connected with outside compressor by outlet pipe.
Centered by the first described supercharging impeller, position offers the discoid arc groove structure of opening, first suction tude is fixedly connected with the opening of the first supercharging impeller centre bit position, on the inside circumference direction of the first supercharging impeller, equal distribution has at least one deck first supercharging vane group from inside to outside, centered by the second described supercharging impeller, position offers the discoid arc groove structure of perforate, second suction tude is fixedly connected with the perforate of the second supercharging impeller centre bit position, on the inside circumference direction of the second supercharging impeller, equal distribution has at least one deck second supercharging vane group from inside to outside.
The top of described shell fixed base is provided with groove, and the bottom of shell is fixedly mounted in this groove, and shell fixed base is fixedly mounted on the central position of base.
The sense of rotation of the first described speed-adjustable motor output terminal and the direction of rotation of the second speed-adjustable motor output terminal.
Between the first described housing and the first suction tude, clutch shaft bearing is installed, the arranged outside of clutch shaft bearing has the first seal arrangement, between the second described housing and the second suction tude, the second bearing is installed, the arranged outside of the second bearing has the second seal arrangement, and the first described seal arrangement and the second seal arrangement are axle head dry gas seals, labyrinth seal, floating-ring seal or oil lubrication mechanical seal.
The circular ring that the first described supercharging vane group and the second supercharging vane group are all made up of at least four sheet blades, the angle of attack direction of the first supercharging vane group and the second supercharging vane group blade is contrary, and the blade stagger of the first supercharging vane group and the second supercharging vane group is distributed in the inner side of the first supercharging impeller and the second supercharging impeller.
The present invention has following good effect: first the present invention utilizes the multi-stage booster blade of the interlaced distribution that two supercharging impeller is arranged respectively, realize multi-stage booster effect, compare existing multistage centrifugal compressor, it has simple and compact for structure, small and exquisite, lightweight applied widely, cheap, work and the high advantage of operational efficiency, impeller of the present invention is the parallel layout of the multi-stage booster vane group of equal distribution from inside to outside on inside circumference direction on a supercharging impeller, during operation, both sides power source drives the first supercharging impeller and second supercharging impeller of both sides to rotate respectively to positive and negative two relative directions, multi-stage booster blade interlaced on the supercharging impeller of both sides also rotates to positive and negative two relative directions simultaneously, gas enters in compressor from first suction tude at middle part and the second suction tude, and make gas obtain kinetic energy via the supercharging blade of High Rotation Speed to air work, the next stage supercharging blade of opposite direction rotation is entered into by the air-flow of supercharging blade, and be pressurized blade and cut in the opposite direction, air-flow its kinetic energy of swerving is pressure energy, simultaneously because supercharging blade is tangential for air-flow centrifugal direction, so it is but accelerate that air-flow changes the speed of its centrifugal direction while sense of rotation increases pressure energy, simultaneously because compressor inner space is that thick middle space is large, the structure that Shang compare Bao space, limit is little, gas is accelerated to be thrown in the small space at the edge of compressor through each grade blade centrifugal force by a large amount of gases in the large space of center, the pressure energy that its kinetic energy finally becomes.So accelerate through the pressurization of multi-stage booster blade, multistage pressure superposes the compression increased progressively and the final pressure finally obtained required for gas.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the internal structure schematic diagram of shell of the present invention.
Fig. 3 is the side structure schematic diagram of shell of the present invention.
Fig. 4 is the present invention second supercharging impeller side structure schematic diagram.
Fig. 5 is the present invention first supercharging impeller side structure schematic diagram.
Fig. 6 is the present invention first supercharging vane group and the second supercharging vane group setting position structural representation.
Embodiment
As Fig. 1, 2, 3, 4, 5, shown in 6, a kind of multistage pressure centrifugal compressor, comprise base 1, be fixedly mounted on the shell fixed base 2 on base 1, be fixedly mounted on the shell on shell fixed base 2 top, it is characterized in that: the center bilateral symmetry of described shell is movably installed with the first suction tude 8 and the second suction tude 10, the inner side of the first suction tude 8 is fixedly connected with the first supercharging impeller 11, the inner side of the second suction tude 10 is fixedly connected with the second supercharging impeller 9, the inner side of the first supercharging impeller 11 and the second supercharging impeller 9 is respectively arranged with the first supercharging vane group 13 and the second supercharging vane group 12 of interlaced distribution, shell is provided with outlet pipe 5, the external stability of the first described suction tude 8 is provided with the first driven gear 20, first driven gear 20 is connected with the first power input device, the external stability of the second described suction tude 10 is provided with the second driven gear 21, second driven gear 21 is connected with the second power input device.Bilateral power source is utilized to drive two supercharging impeller, two supercharging impeller arranges the multilayer supercharging blade of interlaced distribution respectively, the power equipment of different sense of rotation is utilized to make interlaced multilayer supercharging blade to turning, realize the pressurized treatment to the gas that middle part enters, and utilize external casing to derive after the high-pressure gas seal after supercharging, substantially increase the discharge pressure of fan of product, and the bidirection air intake pipe coordinating bilateral to offer, enhance air output, the operation that guarantee equipment is stable, applied widely, work and operational efficiency high, discharge pressure of fan is high, tolerance is sufficient, go for the occasion that tolerance is less and pressure ratio is high, utilize the motor of variable-speed to realize variable to rotate, operating mode district increases greatly, thering is provided of multistage change blast can be provided, less economic input is utilized to realize the adjustment of multistage high strength tolerance, achieve multistage centrifugal pump pressurized effect on a compressor equipment, reduce cost, take up room little, but work and operational efficiency improve greatly, it is three times of conventional centrifugal compressor operating efficiency, it goes out more than three times that blast is also conventional centrifugal compressor blast, there is good Social and economic benef@.
The first described power input device comprises the first speed-adjustable motor 16, the output terminal of the first speed-adjustable motor 16 is installed with the first driving gear 19, first driving gear 19 and the first driven gear 20 engage each other, the second described power input device comprises the second speed-adjustable motor 17, the output terminal of the second speed-adjustable motor 17 is installed with the second driving gear 18, second driving gear 18 and the second driven gear 21 engage each other, bearing 22 is provided with in the bottom of the first speed-adjustable motor 16 and the second speed-adjustable motor 17, bearing 22 is fixedly mounted on above the base 1 of shell fixed base 2 both sides.The sense of rotation of the first described speed-adjustable motor 16 output terminal and the direction of rotation of the second speed-adjustable motor 17 output terminal.Utilize two speed-adjustable motors to realize the rotation of motor output end different direction, final the first supercharging vane group 13 and the second supercharging vane group 12 interleaved fly-back of driving suits rotation, produces pressurized effect, reaches the effect strengthening blast.
The central position that described shell is made up of the first housing 3 and the second housing 4 offers the groove-like hollow cavity structure of the thick middle thin edge of through hole, first supercharging impeller 11 is movably arranged on the inner side of the first housing 3, second supercharging impeller 9 is movably arranged on the inner side of the second housing 4, described outlet pipe 5 is fixedly mounted on the first housing 3 or the second housing 4, outlet pipe 5 is connected with exhaust port 15, and supercharging storehouse 14 is connected with outside compressor by outlet pipe 5.Shell adopts two halves formula combination mounting process, ensures sealing effect.The outer end in the casing circumference direction of the groove-like hollow cavity structure of thick middle thin edge arranges supercharging storehouse 14, and supercharging storehouse 14 is sealed in enclosure, and is connected with outlet pipe 5, and discharges pressurized gas by outlet pipe 5.
Centered by the first described supercharging impeller 11, position offers the discoid arc groove structure of opening, first suction tude 8 is fixedly connected with the opening of the first supercharging impeller 11 centre bit position, on the inside circumference direction of the first supercharging impeller 11, equal distribution has at least one deck first supercharging vane group 13 from inside to outside, centered by the second described supercharging impeller 9, position offers the discoid arc groove structure of perforate, second suction tude 10 is fixedly connected with the perforate of the second supercharging impeller 9 centre bit position, on the inside circumference direction of the second supercharging impeller 9, equal distribution has at least one deck second supercharging vane group 12 from inside to outside.First supercharging impeller 11 and the second supercharging impeller 9 can synchronizedly rotate, also can friction speed rotate, as long as implement adjustment to two speed-adjustable motors can realize, first supercharging impeller 11 and the synchronized rotation of the second supercharging impeller 9 or friction speed rotate, realize the operation for blast of different stage, realize the multistage change of blast, while the increase that guarantees air intake, after effectively making Wind Volume air intake, middle part forms negative pressure, housing exterior circumferencial direction forms high pressure, and the multistage blade group be interspersed forms pressurized gas laterally by therefrom anxious for gas when rotated.
The top of described shell fixed base 2 is provided with groove, and the bottom of shell is fixedly mounted in this groove, and shell fixed base 2 is fixedly mounted on the central position of base 1.Guarantee equipment operationally provides stable bottom support, and shell fixed base 2 can adopt rubber material to make, and can reduce noise and damping, improves quiet stability when equipment runs.
The sense of rotation of the first described speed-adjustable motor 16 output terminal and the direction of rotation of the second speed-adjustable motor 17 output terminal.Between the first described housing 3 and the first suction tude 8, clutch shaft bearing 23 is installed, the arranged outside of clutch shaft bearing 23 has the first seal arrangement 7, between the second described housing 4 and the second suction tude 10, second bearing 6 is installed, the arranged outside of the second bearing 6 has the second seal arrangement 24, and the first described seal arrangement 7 and the second seal arrangement 24 are axle head dry gas seals, labyrinth seal, floating-ring seal or oil lubrication mechanical seal.Suction tude and internal pressurization impeller adopt unitary design, and not leaking out in center portion to utilize seal ring to ensure, to reduce inside shell and outside supercharging impeller between the loss of air quantity, improve the stability that equipment runs.
The circular ring that the first described supercharging vane group 13 and the second supercharging vane group 12 are all made up of at least four sheet blades, the angle of attack direction of the first supercharging vane group 13 and the second supercharging vane group 12 blade is contrary, and the blade stagger of the first supercharging vane group 13 and the second supercharging vane group 12 is distributed in the inner side of the first supercharging impeller 11 and the second supercharging impeller 9.Supercharging blades arrangement becomes circular distribution, each blade all with impeller outside circumference point of intersection be non-right angle structural configuration, and, neighbouring two-layer blade to arrange angle contrary, neighbouring two-layer blade setting position is interlaced, is conducive to the raising of blast.
Outside normal pressure wind regime enters between the first supercharging impeller 11 and the second supercharging impeller 9 from the first suction tude 8 and the second suction tude 10, under the difference induced effect of the first speed-adjustable motor 16 and the second speed-adjustable motor 17, first suction tude 8 and the second suction tude 10 respectively positive and negative two relative directions rotate, first supercharging vane group 13 and the second supercharging vane group 12 of arranging rotate respectively to positive and negative two relative directions, air makes gas obtain kinetic energy via the supercharging blade of High Rotation Speed to air work, the next stage supercharging blade of opposite direction rotation is entered into by the air-flow of supercharging blade, and be pressurized the tangential mutually despun direction of blade, its kinetic energy of air-flow flip-flop sense of rotation is pressure energy, simultaneously because supercharging blade is tangential for air-flow centrifugal direction, so it is but accelerate that air-flow changes the speed of its centrifugal direction while sense of rotation increases pressure energy, so accelerate through the pressurization of multi-stage booster blade, multistage pressure superposes the compression increased progressively and the final pressure finally obtained required for gas.Form high pressure at the outside left of the first supercharging impeller 11 and the second supercharging impeller 9, pressurized gas are exported by supercharging storehouse 14 and outlet pipe 5.

Claims (8)

1. a multistage pressure centrifugal compressor, comprise base (1), be fixedly mounted on the shell fixed base (2) on base (1), be fixedly mounted on the shell on shell fixed base (2) top, it is characterized in that: the center bilateral symmetry of described shell is movably installed with the first suction tude (8) and the second suction tude (10), the inner side of the first suction tude (8) is fixedly connected with the first supercharging impeller (11), the inner side of the second suction tude (10) is fixedly connected with the second supercharging impeller (9), the inner side of the first supercharging impeller (11) and the second supercharging impeller (9) is respectively arranged with the first supercharging vane group (13) and the second supercharging vane group (12) of interlaced distribution, shell is provided with outlet pipe (5), the external stability of described the first suction tude (8) is provided with the first driven gear (20), first driven gear (20) is connected with the first power input device, the external stability of described the second suction tude (10) is provided with the second driven gear (21), second driven gear (21) is connected with the second power input device.
2. multistage pressure centrifugal compressor according to claim 1, it is characterized in that: the first described power input device comprises the first speed-adjustable motor (16), the output terminal of the first speed-adjustable motor (16) is installed with the first driving gear (19), first driving gear (19) and the first driven gear (20) engage each other, the second described power input device comprises the second speed-adjustable motor (17), the output terminal of the second speed-adjustable motor (17) is installed with the second driving gear (18), second driving gear (18) and the second driven gear (21) engage each other, bearing (22) is provided with in the bottom of the first speed-adjustable motor (16) and the second speed-adjustable motor (17), bearing (22) is fixedly mounted on base (1) top of shell fixed base (2) both sides.
3. multistage pressure centrifugal compressor according to claim 1, it is characterized in that: the central position that described shell is made up of the first housing (3) and the second housing (4) offers the groove-like hollow cavity structure of the thick middle thin edge of through hole, first supercharging impeller (11) is movably arranged on the inner side of the first housing (3), second supercharging impeller (9) is movably arranged on the inner side of the second housing (4), described outlet pipe (5) is fixedly mounted on the first housing (3) or the second housing (4), outlet pipe (5) is connected with exhaust port (15), supercharging storehouse (14) is connected with outside compressor by outlet pipe (5).
4. multistage pressure centrifugal compressor according to claim 1, it is characterized in that: centered by described the first supercharging impeller (11), position offers the discoid arc groove structure of opening, first suction tude (8) is fixedly connected with the opening of the first supercharging impeller (11) centre bit position, on the inside circumference direction of the first supercharging impeller (11), equal distribution has at least one deck first supercharging vane group (13) from inside to outside, centered by described the second supercharging impeller (9), position offers the discoid arc groove structure of perforate, second suction tude (10) is fixedly connected with the perforate of the second supercharging impeller (9) centre bit position, on the inside circumference direction of the second supercharging impeller (9), equal distribution has at least one deck second supercharging vane group (12) from inside to outside.
5. multistage pressure centrifugal compressor according to claim 1, it is characterized in that: the top of described shell fixed base (2) is provided with groove, the bottom of shell is fixedly mounted in this groove, and shell fixed base (2) is fixedly mounted on the central position of base (1).
6. multistage pressure centrifugal compressor according to claim 2, is characterized in that: the sense of rotation of described the first speed-adjustable motor (16) output terminal and the direction of rotation of the second speed-adjustable motor (17) output terminal.
7. multistage pressure centrifugal compressor according to claim 3, it is characterized in that: between described the first housing (3) and the first suction tude (8), clutch shaft bearing (23) is installed, the arranged outside of clutch shaft bearing (23) has the first seal arrangement (7), between described the second housing (4) and the second suction tude (10), the second bearing (6) is installed, the arranged outside of the second bearing (6) has the second seal arrangement (24), described the first seal arrangement (7) and the second seal arrangement (24) are axle head dry gas seals, labyrinth seal, floating-ring seal or oil lubrication mechanical seal.
8. multistage pressure centrifugal compressor according to claim 4, it is characterized in that: the circular ring that the first described supercharging vane group (13) and the second supercharging vane group (12) are all made up of at least four sheet blades, the angle of attack direction of the first supercharging vane group (13) and the second supercharging vane group (12) blade is contrary, and the blade stagger of the first supercharging vane group (13) and the second supercharging vane group (12) is distributed in the inner side of the first supercharging impeller (11) and the second supercharging impeller (9).
CN201510647531.4A 2015-10-09 2015-10-09 A kind of multistage pressure centrifugal compressor Active CN105201873B (en)

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CN105201873B CN105201873B (en) 2017-06-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113140758A (en) * 2021-04-09 2021-07-20 上海电气集团股份有限公司 Self-rotating hydrogen reflux device

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JPH07189999A (en) * 1993-12-27 1995-07-28 Hitachi Ltd Axial fan
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CN1179995A (en) * 1995-12-02 1998-04-29 秦玉尧 Centrifugal steam melangeur
CN1877100A (en) * 2005-06-06 2006-12-13 通用电气公司 Counterrotating turbofan engine
CN101117926A (en) * 2006-07-31 2008-02-06 通用电气公司 Flade fan with different inner and outer airfoil stagger angles at a shroud therebetween
CN101776011A (en) * 2008-12-29 2010-07-14 通用电气公司 turbine airfoil clocking
CN103244454A (en) * 2012-02-09 2013-08-14 通用电气公司 Turbomachine flow improvement system
CN103696988A (en) * 2013-12-06 2014-04-02 西安交通大学 Hub shell opposite rotating type multistage axial flow fan
CN205001220U (en) * 2015-10-09 2016-01-27 常胜 Multistage high -pressure centrifugal compressor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1130414A (en) * 1993-08-06 1996-09-04 伊雅·Y·亚诺夫斯基 Method and apparatus for converting thermal energy to mechanical energy
JPH07189999A (en) * 1993-12-27 1995-07-28 Hitachi Ltd Axial fan
CN1179995A (en) * 1995-12-02 1998-04-29 秦玉尧 Centrifugal steam melangeur
CN1877100A (en) * 2005-06-06 2006-12-13 通用电气公司 Counterrotating turbofan engine
CN101117926A (en) * 2006-07-31 2008-02-06 通用电气公司 Flade fan with different inner and outer airfoil stagger angles at a shroud therebetween
CN101776011A (en) * 2008-12-29 2010-07-14 通用电气公司 turbine airfoil clocking
CN103244454A (en) * 2012-02-09 2013-08-14 通用电气公司 Turbomachine flow improvement system
CN103696988A (en) * 2013-12-06 2014-04-02 西安交通大学 Hub shell opposite rotating type multistage axial flow fan
CN205001220U (en) * 2015-10-09 2016-01-27 常胜 Multistage high -pressure centrifugal compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113140758A (en) * 2021-04-09 2021-07-20 上海电气集团股份有限公司 Self-rotating hydrogen reflux device

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