CN104373352B - Magnetic suspension single shaft direct-drive compressor - Google Patents
Magnetic suspension single shaft direct-drive compressor Download PDFInfo
- Publication number
- CN104373352B CN104373352B CN201410617445.4A CN201410617445A CN104373352B CN 104373352 B CN104373352 B CN 104373352B CN 201410617445 A CN201410617445 A CN 201410617445A CN 104373352 B CN104373352 B CN 104373352B
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- magnetic bearing
- radial direction
- rotor
- stator
- direction magnetic
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- 239000000725 suspension Substances 0.000 title claims abstract description 34
- 238000006073 displacement reaction Methods 0.000 claims abstract description 111
- 238000001514 detection method Methods 0.000 claims abstract description 65
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000446 fuel Substances 0.000 claims description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910000648 terne Inorganic materials 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 15
- 238000009434 installation Methods 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000010779 crude oil Substances 0.000 description 8
- 239000012530 fluid Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a kind of magnetic suspension single shaft direct-drive compressor, including rotor-support-foundation system and stator system two parts；Rotor-support-foundation system includes the rotor of axial magnetic bearing being sequentially arranged on screw shaft, left radial displacement transducer detection ring, the rotor of left radial direction magnetic bearing, middle radial displacement transducer detection ring, the rotor of middle radial direction magnetic bearing, the rotor of motor, pressure ring, the rotor of right radial direction magnetic bearing and right radial displacement transducer detection ring；The stator of axial magnetic bearing that stator system includes being sequentially arranged on support, the stator of left radial direction magnetic bearing, the stator of middle radial direction magnetic bearing, the stator of motor, the stator of right radial direction magnetic bearing.Realize, by described axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic bearing and right radial direction magnetic bearing, the magnetic suspension that on-mechanical contacts between rotor-support-foundation system with described stator system.Compact conformation, energy-conserving and environment-protective, operation is efficient, reliability is high.
Description
Technical field
The present invention relates to a kind of employing magnetic bearing contactless suspension bearing technology, particularly relate to a kind of magnetic suspension single shaft and directly drive pressure
Contracting machine.
Background technology
Along with improving constantly of living standard, the demand of the energy (especially petroleum resources) is stepped up by people, due to
Domestic petroleum yield is far from meeting consumption demand, and energy supply and demand contradiction, it is high that the energy is increasingly becoming China's economy
The bottleneck of speed development.The mainstay of the national economy energy is not only by oil, and is the defense strategy energy.For meeting state's internal diabetes
Taking demand, China accounts for more than half of gross domestic consumption level every year from the oil of external import.Overseas crude oil passes through oil tanker
After being transported to harbour, it is delivered to oil plant processing by crude oil pipeline and extracts product oil, for consumer.Crude oil pipeline
During conveying crude oil, need to provide oil pressure by compressor, crude oil is transported to continually oil plant, oil pressure the biggest conveying speed
Spend the fastest.Therefore, compressor is the critical equipment of transfer efficiency.
Standard machinery compressor uses mechanical bearing supporting, and its rotating speed is on the low side, and transfer efficiency is low, and frictional heat is big, vibration
Noise is big.Excessive frictional heat accelerates the consumption of lubricating oil, needs often to safeguard its lubricating system, therefore
Mechanical compressor can not be positioned in crude oil pipeline, is typically mounted in the pressurizing point outside pipeline.
Summary of the invention
It is an object of the invention to provide a kind of compact conformation, energy-conserving and environment-protective, operation is efficient, reliability is high magnetic suspension single shaft
Direct-drive compressor.
It is an object of the invention to be achieved through the following technical solutions:
The magnetic suspension single shaft direct-drive compressor of the present invention, including rotor-support-foundation system and stator system two parts；
Described rotor-support-foundation system includes that the rotor of axial magnetic bearing being sequentially arranged on screw shaft, left radial displacement transducer are examined
Survey ring, the rotor of left radial direction magnetic bearing, middle radial displacement transducer detection ring, the rotor of middle radial direction magnetic bearing, motor
Rotor, pressure ring, the rotor of right radial direction magnetic bearing and right radial displacement transducer detection ring；
The stator of axial magnetic bearing that described stator system includes being sequentially arranged on support, the stator of left radial direction magnetic bearing,
The stator of middle radial direction magnetic bearing, the stator of motor, the stator of right radial direction magnetic bearing, also include axial magnetic bearing stator self-locking
Nut, left radial direction magnetic bearing stator self-locking nut, left radial displacement transducer, fuel discharge port, middle radial direction magnetic bearing are fixed
Sub-self-locking nut, middle radial displacement transducer, motor stator self-locking nut, right radial direction magnetic bearing stator self-locking nut, the right side
Radial displacement transducer, left end cap, right end cap, left sealing ring, right sealing ring, left shaft position sensor, the right side are axially
Displacement transducer, left protection bearing, right protection bearing, left protection bearing pressure ring and right protection bearing pressure ring；
By described axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic between described rotor-support-foundation system and described stator system
Bearing realizes, with right radial direction magnetic bearing, the magnetic suspension that on-mechanical contacts.
As seen from the above technical solution provided by the invention, the magnetic suspension single shaft that the embodiment of the present invention provides directly drives compression
Machine, due between rotor-support-foundation system and described stator system by described axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic
Bearing realizes, with right radial direction magnetic bearing, the magnetic suspension that on-mechanical contacts, it is to avoid the fretting wear that mechanical bearing brings, and improves
The rotating speed of compressor and output energy density, and use magnetic suspension motor and compressor integrated design, there is structure tight
Gather, energy-conserving and environment-protective, the operation advantage such as efficiently, be particularly well-suited to a new generation's energy-conserving and environment-protective oil gas storage equipment.Magnetic suspension pressure
Contracting machine uses magnetic suspension noncontact suspension bearing, eliminates the fretting wear that mechanical bearing brings, reduces vibrating noise,
Without lubricating system, have without advantages such as friction, high rotating speed, high efficiency.Owing to magnetic suspension compressor is without lubrication, institute
Can be directly installed in the crude oil pipeline of closing, greatly reduce the construction cost of crude oil pipeline.
Accompanying drawing explanation
Fig. 1 is the three dimensional structure schematic diagram of the magnetic suspension single shaft direct-drive compressor of the technology of the present invention solution；
Fig. 2 a is the rotor-support-foundation system sectional view of the technology of the present invention solution；
Fig. 2 b is the rotor-support-foundation system three dimensional structure schematic diagram of the technology of the present invention solution；
Fig. 3 a is the stator system sectional view of the technology of the present invention solution；
Fig. 3 b is the stator system three dimensional structure schematic diagram of the technology of the present invention solution；
Fig. 4 is the screw shaft three dimensional structure schematic diagram of the technology of the present invention solution；
Fig. 5 is the support three dimensional structure schematic diagram of the technology of the present invention solution；
Detailed description of the invention
The embodiment of the present invention will be described in further detail below.
The magnetic suspension single shaft direct-drive compressor of the present invention, its preferably detailed description of the invention is:
Including rotor-support-foundation system and stator system two parts；
Described rotor-support-foundation system includes that the rotor of axial magnetic bearing being sequentially arranged on screw shaft, left radial displacement transducer are examined
Survey ring, the rotor of left radial direction magnetic bearing, middle radial displacement transducer detection ring, the rotor of middle radial direction magnetic bearing, motor
Rotor, pressure ring, the rotor of right radial direction magnetic bearing and right radial displacement transducer detection ring；
The stator of axial magnetic bearing that described stator system includes being sequentially arranged on support, the stator of left radial direction magnetic bearing,
The stator of middle radial direction magnetic bearing, the stator of motor, the stator of right radial direction magnetic bearing, also include axial magnetic bearing stator self-locking
Nut, left radial direction magnetic bearing stator self-locking nut, left radial displacement transducer, fuel discharge port, middle radial direction magnetic bearing are fixed
Sub-self-locking nut, middle radial displacement transducer, motor stator self-locking nut, right radial direction magnetic bearing stator self-locking nut, the right side
Radial displacement transducer, left end cap, right end cap, left sealing ring, right sealing ring, left shaft position sensor, the right side are axially
Displacement transducer, left protection bearing, right protection bearing, left protection bearing pressure ring and right protection bearing pressure ring；
By described axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic between described rotor-support-foundation system and described stator system
Bearing realizes, with right radial direction magnetic bearing, the magnetic suspension that on-mechanical contacts.
The rotor of the rotor of described axial magnetic bearing, left radial displacement transducer detection ring and left radial direction magnetic bearing is respectively positioned on spiral shell
Bar axle left end radial outside, the rotor of axial magnetic bearing is positioned at left radial displacement transducer detection ring and left radial direction magnetic bearing
On the left of rotor, and being arranged on screw shaft by interference fit, left radial displacement transducer detection ring is positioned at axial magnetic bearing
Rotor on the right side of and the rotor of left radial direction magnetic bearing on the left of, and be arranged on screw shaft by interference fit, left radial direction magnetic axis
The rotor held is positioned on the right side of rotor and the left radial displacement transducer detection ring of axial magnetic bearing, and is installed by interference fit
On screw shaft, the detection of middle radial displacement transducer ring, the rotor of middle radial direction magnetic bearing, the rotor of motor, pressure ring, the right side
The rotor of radial direction magnetic bearing and right radial displacement transducer detection ring are respectively positioned on screw shaft right-hand member radial outside, middle radial displacement
Sensor detection ring is positioned on the left of the rotor of middle radial direction magnetic bearing, and is arranged on screw shaft by interference fit, middle radial direction
The rotor of magnetic bearing is positioned on the right side of middle radial displacement transducer detection ring and on the left of the rotor of motor, and is pacified by interference fit
Being contained on screw shaft, the rotor of motor is positioned on the right side of the rotor of middle radial direction magnetic bearing, and is fixedly mounted on screw rod by pressure ring
On axle, the rotor of right radial direction magnetic bearing is positioned on the right side of pressure ring and on the left of right radial displacement transducer detection ring, and passes through interference
Coordinating and be arranged on screw shaft, right radial displacement transducer detection ring is positioned on the left of the rotor of right radial direction magnetic bearing, and passes through
Interference fit is arranged on screw shaft, the stator of axial magnetic bearing, the stator of left radial direction magnetic bearing, middle radial direction magnetic bearing
The stator of stator, the stator of motor and right radial direction magnetic bearing is positioned at support radially inner side, and the stator of axial magnetic bearing is positioned at axle
Outside the rotor radial of magnetic bearing, and it is fixedly mounted on support radially inner side by axial magnetic bearing stator self-locking nut,
The stator of left radial direction magnetic bearing is positioned at outside the rotor radial of left radial direction magnetic bearing, and by left radial direction magnetic bearing stator self-locking
Nut is fixedly mounted on support radially inner side, and it is outside that left radial displacement transducer is positioned at left radial displacement transducer detection ring footpath
On the left of the stator of side and left radial direction magnetic bearing, and it is fixedly mounted on the stator of left radial direction magnetic bearing by trip bolt, goes out
Port connection is positioned at support upper end, and is arranged on support by trip bolt, and the stator of middle radial direction magnetic bearing is positioned at central diameter
Outside the rotor radial of magnetic bearing, and it is inside to be fixedly mounted on support footpath by middle radial direction magnetic bearing stator self-locking nut
Side, the stator that middle radial displacement transducer is positioned at middle radial displacement transducer detection ring radial outside and middle radial direction magnetic bearing is left
Side, and be fixedly mounted on the stator of middle radial direction magnetic bearing by trip bolt, the stator of motor is positioned at the rotor footpath of motor
Laterally, and being fixedly mounted on support radially inner side by motor stator self-locking nut, the stator of right radial direction magnetic bearing is positioned at
Outside the rotor radial of right radial direction magnetic bearing, and it is fixedly mounted on support radially by right radial direction magnetic bearing stator self-locking nut
Inner side, right radial displacement transducer is positioned on the right side of the stator of right radial direction magnetic bearing and right radial displacement transducer detection ring radial direction
Outside, and be fixedly mounted on the stator of right radial direction magnetic bearing by trip bolt, left end cap is positioned on the left of support, and leads to
Crossing trip bolt to be arranged on support, right end cap is positioned on the right side of support, and is arranged on support by trip bolt, Zuo Mi
Seal ring is positioned at support and left end cap radial outside, and the joint portion being welded between support and left end cap by scolding tin, right sealing
Ring is positioned at support and right end cap radial outside, and the joint portion being welded between support and right end cap by scolding tin, left axially position
Displacement sensor is positioned at left end cap, and is fixedly mounted on left end cap by trip bolt, and right shaft position sensor is positioned at
In right end cap, and being fixedly mounted on right end cap by trip bolt, it is outside that left protection bearing is positioned at screw shaft left end footpath
Side, and form mechanical protection gap with screw shaft, right protection bearing is positioned at screw shaft right-hand member radial outside, and and screw shaft
Forming mechanical protection gap, left protection bearing is positioned at left end cap radially inner side, and is fixedly mounted by left protection bearing pressure ring
On left end cap, right protection bearing is positioned at right end cap radially inner side, and is fixedly mounted on right-hand member by right protection bearing pressure ring
Cover.
Described axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic bearing and right radial direction magnetic bearing be pure electromagnetic bearing or
Permanent magnet biased magnetic bearing.
Described screw shaft is without magnetic 3J40 stainless steel material.
Two sections of oppositely oriented trapezoid spiral grooves it are provided with in the middle part of described screw shaft.
Described support is low magnetic stainless steel 1Cr18Ni9Ti material.
Described support and end cap two ends are sealedly and fixedly connected.
Described sealing ring is terne metal or lead-free tin alloy.
The principle of the present invention is:
As it is shown in figure 1, under compressor is in running order, by axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic axis
Hold and right radial direction magnetic bearing, keep the radial and axial gap of rotor-support-foundation system and stator system, when rotor-support-foundation system is by a certain
After interference, when the footpath/axial gap of rotor-support-foundation system changes, footpath/shaft position sensor detects footpath/axial gap in time
Variable quantity, and it is converted into digital transfer to magnetic bearing controller, by controlling footpath/axial magnetic bearing coil current
Size, increases/reduces the electromagnetic force of footpath/axial magnetic bearing, and the footpath/axial gap maintaining magnetic suspension system is uniform, eliminates interference
Impact, it is achieved the complete suspension bearing of rotor-support-foundation system, subsequent start-up motor, utilizes motor driven rotor high-speed rotation, logical
Cross two sections of oppositely oriented trapezoid spiral grooves on screw shaft, the liquid fuel feed hole from support two ends is delivered to the fuel-displaced of centre
Hole, thus reach the purpose of oil transportation.In order to detect rotor displacement signal more accurately, put on each radial direction magnetic bearing side
Put a radial displacement transducer.Wherein, left radial displacement transducer is used for detecting the displacement at left radial direction magnetic bearing, in
Radial displacement transducer is used for the displacement in detection at radial direction magnetic bearing, and right radial displacement transducer is used for detecting right radial direction magnetic
Displacement at bearing.Owing to screw shaft is longer, respectively place a shaft position sensor at screw shaft left end and right-hand member, be used for
The axial displacement of detection rotor-support-foundation system, by entering the detection signal of upper shaft position sensor and lower shaft position sensor
After row difference processing, signal is transmitted magnetic bearing controller, improve axial magnetic bearing control accuracy.
Present invention advantage compared with prior art is:
(1) use magnetic bearing supporting technology, eliminate the fretting wear of mechanical bearing, it is not necessary to lubrication, improve compressor
The rotating speed of rotor, extends the service life of compressor；(2) motor and the integrated design of compressor are used so that pressure
Contracting machine structure more concision and compact, and can work in fluid, can directly be placed on pipe interior, reduce pipe
Road is built and operation cost.
Specific embodiment:
As it is shown in figure 1, magnetic suspension single shaft direct-drive compressor, mainly it is made up of rotor-support-foundation system and stator system two parts, rotor
System specifically includes that axial magnetic bearing 1 rotor, left radial displacement transducer detect ring 2, left radial direction magnetic bearing 3 rotor, spiral shell
Bar axle 4, middle radial displacement transducer detection ring 5, middle radial direction magnetic bearing 6 rotor, motor 7 rotor, pressure ring 8, right radial direction magnetic
Bearing 9 rotor and right radial displacement transducer detection ring 10；Stator system specifically includes that axial magnetic bearing 1 stator, Zuo Jing
To magnetic bearing 3 stator, middle radial direction magnetic bearing 6 stator, motor 7 stator, right radial direction magnetic bearing 9 stator, support 11, axially
Magnetic bearing stator self-locking nut 12, left radial direction magnetic bearing stator self-locking nut 13, left radial displacement transducer 14, oil-out
Joint 15, middle radial direction magnetic bearing stator self-locking nut 16, middle radial displacement transducer 17, motor stator self-locking nut 18,
Right radial direction magnetic bearing stator self-locking nut 19, right radial displacement transducer 20, left end cap 21A, right end cap 21B, left sealing
Ring 22A, right sealing ring 22B, left shaft position sensor 23A, right shaft position sensor 23B, left protection bearing
24A, right protection bearing 24B, left protection bearing pressure ring 25A and right protection bearing pressure ring 25B；Magnetic suspension rotor system and
By axial magnetic bearing 1, left radial direction magnetic bearing 3, middle radial direction magnetic bearing 6 and right radial direction magnetic bearing between magnetic suspension stator system
9 stable suspersions realizing on-mechanical contact, axial magnetic bearing 1 rotor, left radial displacement transducer detection ring 2 and left radial direction magnetic
Bearing 3 rotor is respectively positioned on screw shaft 4 left end radial outside, and axial magnetic bearing 1 rotor is positioned at left radial displacement transducer detection ring
2 and left radial direction magnetic bearing 3 rotor on the left of, and be arranged on screw shaft 4 by interference fit, left radial displacement transducer detects
Ring 2 is positioned on the right side of axial magnetic bearing 1 rotor and on the left of left radial direction magnetic bearing 3 rotor, and is arranged on screw shaft by interference fit
On 4, left radial direction magnetic bearing 3 rotor is positioned on the right side of axial magnetic bearing 1 rotor and left radial displacement transducer detection ring 2, and leads to
Cross interference fit to be arranged on screw shaft 4, middle radial displacement transducer detection ring 5, middle radial direction magnetic bearing 6 rotor, motor 7
Rotor, pressure ring 8, right radial direction magnetic bearing 9 rotor and right radial displacement transducer detection ring 10 are respectively positioned on screw shaft 4 right-hand member radially
Outside, middle radial displacement transducer detection ring 5 is positioned on the left of middle radial direction magnetic bearing 6 rotor, and is arranged on by interference fit
On screw shaft 4, middle radial direction magnetic bearing 6 rotor is positioned on the right side of middle radial displacement transducer detection ring 5 and on the left of motor 7 rotor,
And be arranged on screw shaft 4 by interference fit, motor 7 rotor is positioned on the right side of middle radial direction magnetic bearing 6 rotor, and passes through pressure ring
8 are fixedly mounted on screw shaft 4, and right radial direction magnetic bearing 9 rotor is positioned on the right side of pressure ring 8 and right radial displacement transducer detects ring
On the left of in the of 10, and being arranged on screw shaft 4 by interference fit, right radial displacement transducer detection ring 10 is positioned at right radial direction magnetic axis
Holding on the left of 9 rotors, and be arranged on screw shaft 4 by interference fit, axial magnetic bearing 1 stator, left radial direction magnetic bearing 3 are fixed
Radial direction magnetic bearing 6 stator, middle, motor 7 stator and right radial direction magnetic bearing 9 stator are positioned at support 11 radially inner side, axial magnetic
Bearing 1 stator is positioned at outside axial magnetic bearing 1 rotor radial, and is fixedly mounted by axial magnetic bearing stator self-locking nut 12
At support 11 radially inner side, left radial direction magnetic bearing 3 stator is positioned at outside left radial direction magnetic bearing 3 rotor radial, and by left footpath
Being fixedly mounted on support 11 radially inner side to magnetic bearing stator self-locking nut 13, left radial displacement transducer 14 is positioned at left radial direction
On the left of displacement transducer detection ring 2 radial outside and left radial direction magnetic bearing 3 stator, and it is fixedly mounted on a left side by trip bolt
On radial direction magnetic bearing 3 stator, fuel discharge port 15 is positioned at support 11 upper end, and is arranged on support 11 by trip bolt,
Middle radial direction magnetic bearing 6 stator is positioned at outside middle radial direction magnetic bearing 6 rotor radial, and by middle radial direction magnetic bearing stator self-locking spiral shell
Female 16 are fixedly mounted on support 11 radially inner side, and middle radial displacement transducer 17 is positioned at middle radial displacement transducer detection ring 5 footpath
Laterally with middle radial direction magnetic bearing 6 stator on the left of, and be fixedly mounted on middle radial direction magnetic bearing 6 stator by trip bolt,
Motor 7 stator is positioned at outside motor 7 rotor radial, and is fixedly mounted on support 11 radially by motor stator self-locking nut 18
Inner side, right radial direction magnetic bearing 9 stator is positioned at outside right radial direction magnetic bearing 9 rotor radial, and by right radial direction magnetic bearing stator
Self-locking nut 19 is fixedly mounted on support 11 radially inner side, and it is right that right radial displacement transducer 20 is positioned at right radial direction magnetic bearing 9 stator
Side and right radial displacement transducer detection ring 10 radial outside, and it is fixed to be fixedly mounted on right radial direction magnetic bearing 9 by trip bolt
On son, left end cap 21A is positioned on the left of support 11, and is arranged on support 11 by trip bolt, and right end cap 21B is positioned at machine
On the right side of seat 11, and being arranged on support 11 by trip bolt, left sealing ring 22A is positioned at support 11 and left end cap 21A radial direction
Outside, and it is welded on the joint portion between support 11 and left end cap 21A by scolding tin, right sealing ring 22B is positioned at support 11 and the right side
End cap 21B radial outside, and it is welded on the joint portion between support 11 and right end cap 21B, left axially displacement sensing by scolding tin
Device 23A is positioned at left end cap 21A, and is fixedly mounted on left end cap 21A by trip bolt, right shaft position sensor
23B is positioned at right end cap 21B, and is fixedly mounted on right end cap 21B by trip bolt, and left protection bearing 24A is positioned at
Screw shaft 4 left end radial outside, and form mechanical protection gap with screw shaft 4, it is right that right protection bearing 24B is positioned at screw shaft 4
End radial outside, and form mechanical protection gap with screw shaft 4, it is inside that left protection bearing 24A is positioned at left end cap 21A footpath
Side, and be fixedly mounted on left end cap 21A by left protection bearing pressure ring 25A, right protection bearing 24B is positioned at right end cap
21B radially inner side, and be fixedly mounted on right end cap 21B by right protection bearing pressure ring 25B.
Fig. 2 a is rotor system sectional view of the present invention, and Fig. 2 b is rotor system three dimensional structure schematic diagram of the present invention, rotor
System specifically includes that axial magnetic bearing 1 rotor, left radial displacement transducer detect ring 2, left radial direction magnetic bearing 3 rotor, spiral shell
Bar axle 4, middle radial displacement transducer detection ring 5, middle radial direction magnetic bearing 6 rotor, motor 7 rotor, pressure ring 8, right radial direction magnetic
Bearing 9 rotor and right radial displacement transducer detection ring 10, axial magnetic bearing 1 rotor, left radial displacement transducer detection ring 2
It is positioned at screw shaft 4 left end radial outside, middle radial displacement transducer detection ring 5, middle radial direction magnetic with left radial direction magnetic bearing 3 rotor
Bearing 6 rotor, motor 7 rotor, pressure ring 8, right radial direction magnetic bearing 9 rotor and right radial displacement transducer detection ring 10 are positioned at
Screw shaft 4 right-hand member radial outside, axial magnetic bearing 1 rotor is positioned at screw shaft 4 high order end, and is arranged on spiral shell by interference fit
On bar axle 4, left radial displacement transducer detection ring 2 is positioned on the right side of axial magnetic bearing 1 rotor, and is arranged on by interference fit
On screw shaft 4, left radial direction magnetic bearing 3 rotor is positioned on the right side of left radial displacement transducer detection ring 2, and is pacified by interference fit
Being contained on screw shaft 4, middle radial displacement transducer detection ring 5 is positioned on the left of middle radial direction magnetic bearing 6 rotor, and is joined by interference
Conjunction is arranged on screw shaft 4, is positioned at central diameter and detects on the left of ring 5 to displacement transducer, and lead on the left of middle radial direction magnetic bearing 6 rotor
Crossing interference fit to be arranged on screw shaft 4, motor 7 rotor is positioned on the right side of middle radial direction magnetic bearing 6 rotor, and solid by pressure ring 8
Dingan County is contained on screw shaft 4, and right radial direction magnetic bearing 9 rotor is positioned on the right side of pressure ring 8, and is arranged on screw shaft by interference fit
On 4, right radial displacement transducer detection ring 10 is positioned on the right side of right radial direction magnetic bearing 9 rotor, and is arranged on by interference fit
On screw shaft 4.
Fig. 3 a is stator system sectional view in the present invention, and Fig. 3 b is stator system three dimensional structure schematic diagram, stator in the present invention
System specifically includes that axial magnetic bearing 1 stator, left radial direction magnetic bearing 3 stator, middle radial direction magnetic bearing 6 stator, motor 7 are fixed
Radial direction magnetic bearing 9 stator, right, support 11, axial magnetic bearing stator self-locking nut 12, left radial direction magnetic bearing stator self-locking
Nut 13, left radial displacement transducer 14, fuel discharge port 15, middle radial direction magnetic bearing stator self-locking nut 16, middle radial direction
Displacement transducer 17, motor stator self-locking nut 18, right radial direction magnetic bearing stator self-locking nut 19, right radial displacement sensing
Device 20, left end cap 21A, right end cap 21B, left sealing ring 22A, right sealing ring 22B, left shaft position sensor
23A, right shaft position sensor 23B, left protection bearing 24A, right protection bearing 24B, left protection bearing pressure ring 25A and
Right protection bearing pressure ring 25B, axial magnetic bearing 1 stator is positioned at support 11 left end radially inner side, and fixed by axial magnetic bearing
Sub-self-locking nut 12 is fixedly mounted on support 11, and left radial direction magnetic bearing 3 stator is positioned on the right side of axial magnetic bearing 1 stator, and
Being fixedly mounted on support 11 by left radial direction magnetic bearing stator self-locking nut 13, left radial displacement transducer 14 is positioned at left footpath
To magnetic bearing 3 stator left side, and it is fixedly mounted on left radial direction magnetic bearing 3 stator by trip bolt, fuel discharge port
15 are positioned at support 11 upper end, and are arranged on support 11 by trip bolt, and middle radial direction magnetic bearing 6 stator is positioned at support 11
Right-hand member radially inner side, and be fixedly mounted on support 11 by middle radial direction magnetic bearing stator self-locking nut 16, middle radial displacement
Sensor 17 is positioned at middle radial direction magnetic bearing 6 stator left side, and it is fixed to be fixedly mounted on middle radial direction magnetic bearing 6 by trip bolt
On son, motor 7 stator is positioned on the right side of middle radial direction magnetic bearing 6 stator, and is fixedly mounted on by motor stator self-locking nut 18
On support 11, right radial direction magnetic bearing 9 stator is positioned on the right side of motor 7 stator, and by right radial direction magnetic bearing stator self-locking nut
19 are fixedly mounted on support 11, and right radial displacement transducer 20 is positioned at right radial direction magnetic bearing 9 stator right side, and by tight
Gu screw is fixedly mounted on right radial direction magnetic bearing 9 stator, left end cap 21A is positioned on the left of support 11, and passes through trip bolt
Being arranged on support 11, right end cap 21B is positioned on the right side of support 11, and is arranged on support 11 by trip bolt, Zuo Mi
Seal ring 22A is positioned at support 11 and left end cap 21A radial outside, and is welded between support 11 and left end cap 21A by scolding tin
Joint portion, right sealing ring 22B is positioned at support 11 and right end cap 21B radial outside, and is welded on support 11 and the right side by scolding tin
Joint portion between end cap 21B, left shaft position sensor 23A is positioned at left end cap 21A, and by the fixing peace of trip bolt
Being contained on left end cap 21A, right shaft position sensor 23B is positioned at right end cap 21B, and is fixedly mounted by trip bolt
On right end cap 21B, left protection bearing 24A is positioned at left end cap 21A radially inner side, and by left protection bearing pressure ring 25A
Being fixedly mounted on left end cap 21A, right protection bearing 24B is positioned at right end cap 21B radially inner side, and by right protection bearing
Pressure ring 25B is fixedly mounted on right end cap 21B.
Fig. 4 is screw shaft 4 three dimensional structure schematic diagram in the present invention, and its material is without magnetic 3J40 rustless steel, outside left protection bearing
The face of cylinder 401 and left protection bearing 24A endoporus form portable protective gaps, and axial magnetic bearing external cylindrical surface 402 is for axial magnetic axis
Holding the interference fit location and installation of 1 rotor, left radial displacement transducer detection ring external cylindrical surface 403 passes for left radial displacement
The interference fit location and installation of sensor detection ring 2, left radial direction magnetic bearing rotor outer circle cylinder 404 is for left radial direction magnetic bearing 3 turns
The interference fit location and installation of son, middle radial displacement transducer detection ring external cylindrical surface 405 is examined for middle radial displacement transducer
Surveying the interference fit location and installation of ring 5, middle radial direction magnetic bearing rotor outer circle cylinder 406 is for the mistake of middle radial direction magnetic bearing 6 rotor
Being full of cooperation location and installation, outer circle of motor rotor cylinder 407 is for motor 7 rotor and the location and installation of pressure ring 8, right radial direction magnetic axis
Forwarding the sub-external cylindrical surface 408 interference fit location and installation for right radial direction magnetic bearing 9 rotor, right radial displacement transducer is examined
Survey the ring external cylindrical surface 409 interference fit location and installation for right radial displacement transducer detection ring 10, right protection bearing top circle
Cylinder 410 forms portable protective gaps with right protection bearing 24B endoporus, and in the middle part of screw shaft 4, left side is trapezoid spiral groove counterclockwise,
Right side is trapezoid spiral groove clockwise.
Fig. 5 is support 11 three dimensional structure schematic diagram in the present invention, and its material is that its material of low magnetic stainless steel 1Cr18Ni9Ti is
Low magnetic stainless steel 1Cr18Ni9Ti material, left end cap fastening screwed hole 1101 and right end cap fastening screwed hole 1109 are for a left side
End cap 21A and the fixed installation of right end cap 21B, left oil inlet pipe screwed hole 1102 and right oil inlet pipe screwed hole 1106 are used respectively
Connecting in left oil inlet pipe and right oil inlet pipe, left fuel feed hole 1103 and right fuel feed hole 1107 are respectively used to the input of fluid, fuel-displaced
Hole screwed hole 1104 fixedly mounts for fuel discharge port 15, and oil outlet 1105 installs via for the output of fluid, pedestal
1108 install with pedestal for magnetic suspension single shaft direct-drive compressor, and right radial direction magnetic bearing stator inner cylinder face 1110 is for right footpath
To the location and installation of magnetic bearing 9 stator, motor stator mounting groove 1111 is for the location and installation of motor 7 stator, middle radial direction magnetic
Bearing stator inner cylinder face 1112 is for the location and installation of middle radial direction magnetic bearing 6 stator, left radial direction magnetic bearing stator inner cylinder face
1113 location and installation being used for left radial direction magnetic bearing 3 stator, axial magnetic bearing stator mounting groove 1114 is for axial magnetic bearing 1
The location and installation of stator.
The content not being described in detail in description of the invention belongs to prior art known to professional and technical personnel in the field.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope of present disclosure, the change that can readily occur in or replace
Change, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with claims
Protection domain is as the criterion.
Claims (8)
1. a magnetic suspension single shaft direct-drive compressor, it is characterised in that include rotor-support-foundation system and stator system two parts；
Described rotor-support-foundation system includes the rotor of axial magnetic bearing (1) being sequentially arranged on screw shaft (4), left radial direction position
Displacement sensor detection ring (2), the rotor of left radial direction magnetic bearing (3), middle radial displacement transducer detection ring (5), in
The rotor of radial direction magnetic bearing (6), the rotor of motor (7), pressure ring (8), right radial direction magnetic bearing (9) rotor and
Right radial displacement transducer detection ring (10)；
Described stator system includes the stator of axial magnetic bearing (1) being sequentially arranged on support (11), left radial direction magnetic axis
Hold the stator of (3), the stator of middle radial direction magnetic bearing (6), the stator of motor (7), right radial direction magnetic bearing (9)
Stator, also includes axial magnetic bearing stator self-locking nut (12), left radial direction magnetic bearing stator self-locking nut (13), a left side
Radial displacement transducer (14), fuel discharge port (15), middle radial direction magnetic bearing stator self-locking nut (16), central diameter
To displacement transducer (17), motor stator self-locking nut (18), right radial direction magnetic bearing stator self-locking nut (19),
Right radial displacement transducer (20), left end cap (21A), right end cap (21B), left sealing ring (22A), right close
Seal ring (22B), left shaft position sensor (23A), right shaft position sensor (23B), left protection bearing
(24A), right protection bearing (24B), left protection bearing pressure ring (25A) and right protection bearing pressure ring (25B)；
By described axial magnetic bearing (1), left radial direction magnetic bearing between described rotor-support-foundation system and described stator system
(3), middle radial direction magnetic bearing (6) realizes, with right radial direction magnetic bearing (9), the magnetic suspension that on-mechanical contacts.
Magnetic suspension single shaft direct-drive compressor the most according to claim 1, it is characterised in that described axial magnetic bearing
(1) rotor of rotor, left radial displacement transducer detection ring (2) and left radial direction magnetic bearing (3) is respectively positioned on screw shaft
(4) left end radial outside, the rotor of axial magnetic bearing (1) is positioned at left radial displacement transducer detection ring (2) and left footpath
On the left of the rotor of magnetic bearing (3), and it is arranged on screw shaft (4) by interference fit, left radial displacement transducer
Detection ring (2) is positioned on the right side of the rotor of axial magnetic bearing (1) and on the left of the rotor of left radial direction magnetic bearing (3), and passes through
Interference fit is arranged on screw shaft (4), and the rotor of left radial direction magnetic bearing (3) is positioned at the rotor of axial magnetic bearing (1)
On the right side of left radial displacement transducer detection ring (2), and it is arranged on screw shaft (4) by interference fit, middle radial direction
Displacement transducer detection ring (5), the rotor of middle radial direction magnetic bearing (6), the rotor of motor (7), pressure ring (8),
The rotor of right radial direction magnetic bearing (9) and right radial displacement transducer detection ring (10) are respectively positioned on screw shaft (4) right-hand member footpath
Laterally, middle radial displacement transducer detection ring (5) is positioned on the left of the rotor of middle radial direction magnetic bearing (6), and passes through
Cooperation of being full of is arranged on screw shaft (4), and the rotor of middle radial direction magnetic bearing (6) is positioned at middle radial displacement transducer detection ring
(5) on the left of the rotor of right side and motor (7), and it is arranged on screw shaft (4) by interference fit, motor (7)
Rotor be positioned on the right side of the rotor of middle radial direction magnetic bearing (6), and be fixedly mounted on screw shaft (4) by pressure ring (8)
On, the rotor of right radial direction magnetic bearing (9) is positioned at pressure ring (8) right side and right radial displacement transducer detection ring (10) is left
Side, and be arranged on screw shaft (4) by interference fit, right radial displacement transducer detection ring (10) is positioned at right radial direction
On the left of the rotor of magnetic bearing (9), and it is arranged on screw shaft (4) by interference fit, determining of axial magnetic bearing (1)
The stator of radial direction magnetic bearing (3) sub, left, the stator of middle radial direction magnetic bearing (6), the stator of motor (7) and right radial direction
The stator of magnetic bearing (9) is positioned at support (11) radially inner side, and the stator of axial magnetic bearing (1) is positioned at axial magnetic bearing
(1) outside rotor radial, and it is fixedly mounted on support (11) footpath by axial magnetic bearing stator self-locking nut (12)
To inner side, the stator of left radial direction magnetic bearing (3) is positioned at outside the rotor radial of left radial direction magnetic bearing (3), and by a left side
Radial direction magnetic bearing stator self-locking nut (13) is fixedly mounted on support (11) radially inner side, left radial displacement transducer
(14) it is positioned on the left of the stator of left radial displacement transducer detection ring (2) radial outside and left radial direction magnetic bearing (3),
And be fixedly mounted on the stator of left radial direction magnetic bearing (3) by trip bolt, fuel discharge port (15) is positioned at support
(11) upper end, and be arranged on support (11) by trip bolt, the stator of middle radial direction magnetic bearing (6) is positioned at central diameter
Outside the rotor radial of magnetic bearing (6), and it is fixedly mounted on machine by middle radial direction magnetic bearing stator self-locking nut (16)
Seat (11) radially inner side, it is outside that middle radial displacement transducer (17) is positioned at middle radial displacement transducer detection ring (5) footpath
On the left of the stator of side and middle radial direction magnetic bearing (6), and it is fixedly mounted on middle radial direction magnetic bearing (6) by trip bolt
On stator, the stator of motor (7) is positioned at outside the rotor radial of motor (7), and by motor stator self-locking nut
(18) being fixedly mounted on support (11) radially inner side, the stator of right radial direction magnetic bearing (9) is positioned at right radial direction magnetic bearing
(9) outside rotor radial, and it is fixedly mounted on support (11) by right radial direction magnetic bearing stator self-locking nut (19)
Radially inner side, right radial displacement transducer (20) is positioned on the right side of the stator of right radial direction magnetic bearing (9) and right radial displacement passes
Sensor detection ring (10) radial outside, and be fixedly mounted on the stator of right radial direction magnetic bearing (9) by trip bolt,
Left end cap (21A) is positioned at support (11) left side, and is arranged on support (11) by trip bolt, right end cap
(21B) it is positioned at support (11) right side, and is arranged on support (11) by trip bolt, left sealing ring (22A)
It is positioned at support (11) and left end cap (21A) radial outside, and is welded on support (11) and left end cap by scolding tin
(21A) joint portion between, right sealing ring (22B) is positioned at support (11) and right end cap (21B) radial outside, and
It is welded on the joint portion between support (11) and right end cap (21B), left shaft position sensor (23A) position by scolding tin
In left end cap (21A), and it is fixedly mounted on left end cap (21A) by trip bolt, right shaft position sensor
(23B) it is positioned at right end cap (21B), and is fixedly mounted on right end cap (21B) by trip bolt, left protection
Bearing (24A) is positioned at screw shaft (4) left end radial outside, and forms mechanical protection gap, right guarantor with screw shaft (4)
Protect bearing (24B) and be positioned at screw shaft (4) right-hand member radial outside, and form mechanical protection gap with screw shaft (4), left
Protection bearing (24A) is positioned at left end cap (21A) radially inner side, and by the fixing peace of left protection bearing pressure ring (25A)
Being contained on left end cap (21A), right protection bearing (24B) is positioned at right end cap (21B) radially inner side, and by right guarantor
Protect bearing pressure ring (25B) to be fixedly mounted on right end cap (21B).
Magnetic suspension single shaft direct-drive compressor the most according to claim 2, it is characterised in that described axial magnetic bearing
(1), left radial direction magnetic bearing (3), middle radial direction magnetic bearing (6) and right radial direction magnetic bearing (9) be pure electromagnetic bearing or
Permanent magnet biased magnetic bearing.
4. according to the magnetic suspension single shaft direct-drive compressor described in claim 1,2 or 3, it is characterised in that described screw rod
Axle (4) is without magnetic 3J40 stainless steel material.
5. according to the magnetic suspension single shaft direct-drive compressor described in claim 1,2 or 3, it is characterised in that described screw rod
Axle (4) middle part is provided with two sections of oppositely oriented trapezoid spiral grooves.
6. according to the magnetic suspension single shaft direct-drive compressor described in claim 1,2 or 3, it is characterised in that described support
(11) it is low magnetic stainless steel 1Cr18Ni9Ti material.
7. according to the magnetic suspension single shaft direct-drive compressor described in claim 1,2 or 3, it is characterised in that described support
(11) it is sealedly and fixedly connected with end cap (21) two ends.
8. according to the magnetic suspension single shaft direct-drive compressor described in claim 1,2 or 3, it is characterised in that described sealing
Ring (22) is terne metal or lead-free tin alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617445.4A CN104373352B (en) | 2014-11-05 | 2014-11-05 | Magnetic suspension single shaft direct-drive compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617445.4A CN104373352B (en) | 2014-11-05 | 2014-11-05 | Magnetic suspension single shaft direct-drive compressor |
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| Publication Number | Publication Date |
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| CN104373352A CN104373352A (en) | 2015-02-25 |
| CN104373352B true CN104373352B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170001295A (en) * | 2015-06-26 | 2017-01-04 | 엘지전자 주식회사 | Compressor and Chiller system including it |
| CN106321496A (en) * | 2016-11-04 | 2017-01-11 | 珠海格力节能环保制冷技术研究中心有限公司 | High-speed magnetic suspension rotor type axial detection device and centrifugal compressor |
| CN106438696A (en) * | 2016-11-21 | 2017-02-22 | 南京磁谷科技有限公司 | Magnetic bearing structure |
| CN107742995B (en) * | 2017-12-04 | 2023-12-26 | 南京磁谷科技股份有限公司 | Mounting structure of axial detection piece of magnetic suspension motor rotor |
| CN107989896A (en) * | 2017-12-13 | 2018-05-04 | 中国人民解放军海军工程大学 | Axial and radial integration magnetic levitation bearing system |
| CN110219896A (en) * | 2019-05-22 | 2019-09-10 | 浙江优特轴承有限公司 | It is integrated with the spindle bearing structure of sensor |
| CN110828252B (en) * | 2019-11-21 | 2021-09-07 | 南京普暴教育科技有限公司 | Robot programming device for teaching robot program |
| CN211230872U (en) * | 2019-12-11 | 2020-08-11 | 南京磁谷科技有限公司 | Structure for adjusting clearance by utilizing axial sensor of air compressor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2213447A1 (en) * | 1972-03-20 | 1973-10-04 | Karl Boden | MAGNETIC STORAGE |
| US4082376A (en) * | 1974-12-06 | 1978-04-04 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh | Bearing arrangement |
| JPH0626521A (en) * | 1992-07-08 | 1994-02-01 | Ebara Corp | Magnetic bearing device |
| EP1083348A1 (en) * | 1999-09-07 | 2001-03-14 | Ebara Corporation | Magnetic bearing device |
| JP2003013953A (en) * | 2001-06-26 | 2003-01-15 | Koyo Seiko Co Ltd | Magnetic bearing unit |
| CN204267289U (en) * | 2014-11-05 | 2015-04-15 | 北京石油化工学院 | Magnetic suspension single shaft direct-drive compressor |
-
2014
- 2014-11-05 CN CN201410617445.4A patent/CN104373352B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2213447A1 (en) * | 1972-03-20 | 1973-10-04 | Karl Boden | MAGNETIC STORAGE |
| US4082376A (en) * | 1974-12-06 | 1978-04-04 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh | Bearing arrangement |
| JPH0626521A (en) * | 1992-07-08 | 1994-02-01 | Ebara Corp | Magnetic bearing device |
| EP1083348A1 (en) * | 1999-09-07 | 2001-03-14 | Ebara Corporation | Magnetic bearing device |
| JP2003013953A (en) * | 2001-06-26 | 2003-01-15 | Koyo Seiko Co Ltd | Magnetic bearing unit |
| CN204267289U (en) * | 2014-11-05 | 2015-04-15 | 北京石油化工学院 | Magnetic suspension single shaft direct-drive compressor |
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| CN104373352A (en) | 2015-02-25 |
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