CN104373352A - Magnetic suspension uniaxial direct-driven compressor - Google Patents
Magnetic suspension uniaxial direct-driven compressor Download PDFInfo
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- CN104373352A CN104373352A CN201410617445.4A CN201410617445A CN104373352A CN 104373352 A CN104373352 A CN 104373352A CN 201410617445 A CN201410617445 A CN 201410617445A CN 104373352 A CN104373352 A CN 104373352A
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- magnetic bearing
- radial direction
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- rotor
- direction magnetic
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- 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
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- 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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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses a magnetic suspension uniaxial direct-driven compressor which comprises two parts, namely a rotor system and a stator system, wherein the rotor system comprises a rotor of an axial magnetic bearing, a left radial displacement sensor detection ring, a rotor of a left radial magnetic bearing, a middle radial displacement sensor detection ring, a rotor of a middle radial magnetic bearing, a rotor of a motor, a pressure ring, a rotor of a right radial magnetic bearing and a right radial displacement sensor detection ring which are sequentially arranged on a screw shaft; the stator system comprises a stator of the axial magnetic bearing, a stator of the left radial magnetic bearing, a stator of the middle radial magnetic bearing, a stator of the motor and a stator of the right radial magnetic bearing which are sequentially arranged on a machine base; and non-mechanical contact magnetic suspension is realized between the rotor system and the stator system through the axial magnetic bearing, the left radial magnetic bearing, the middle radial magnetic bearing and the right radial magnetic bearing. The magnetic suspension uniaxial direct-driven compressor disclosed by the invention has the advantages of compact structure, energy conservation, environmental protection, high operation efficiency and high reliability.
Description
Technical field
The present invention relates to the contactless suspension bearing technology of a kind of employing magnetic bearing, particularly relate to a kind of magnetic suspension single shaft direct-drive compressor.
Background technique
Along with improving constantly of living standard, the demand of people to the energy (especially petroleum resources) progressively increases, because domestic petroleum output far can not meet consumption demand, energy supply and demand contradiction, the energy becomes the bottleneck of China's rapid economic development gradually.The mainstay of the national economy energy is not only by oil, and be the defense strategy energy.For meeting domestic consumption demand, China accounts for the over half of gross domestic consumption level from the oil of external import every year.After overseas crude oil is transported to harbour by oil tanker, is delivered to oil refinery processing by crude oil pipeline and extracts product oil, for Consumer.During crude oil pipeline conveying crude oil, need to provide oil pressure by compressor, crude oil is transported to oil refinery continually, the larger transporting velocity of oil pressure is faster.Therefore, compressor is the critical equipment of transfer efficiency.
Conventional machinery compressor adopts mechanical bearing supporting, and its rotating speed is on the low side, and transfer efficiency is low, and frictional heat is large, vibration noise is large.Excessive frictional heat accelerates the consumption of lubricant oil, needs often to safeguard its lubrication system, and therefore mechanical compressor can not be positioned in crude oil pipeline, is usually arranged in the pressurizing point outside pipeline.
Summary of the invention
The object of this invention is to provide a kind of compact structure, energy-conserving and environment-protective, operation is efficient, reliability is high magnetic suspension single shaft direct-drive compressor.
The object of the invention is to be achieved through the following technical solutions:
Magnetic suspension single shaft direct-drive compressor of the present invention, comprises rotor-support-foundation system and stator system two-part;
Described rotor-support-foundation system comprises the rotor of the axial magnetic bearing be arranged on successively on screw axis, 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;
Described stator system comprises the stator of the axial magnetic bearing be arranged on successively 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 comprise 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 stator self-locking nut, middle radial displacement transducer, motor stator self-locking nut, right radial direction magnetic bearing stator self-locking nut, right radial displacement transducer, left end cap, right end cap, left seal ring, right seal ring, left shaft position sensor, right shaft position sensor, left protection bearing, right protection bearing, left protection bearing pressure ring and right protection bearing pressure ring,
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 described rotor-support-foundation system with described stator system.
As seen from the above technical solution provided by the invention, the magnetic suspension single shaft direct-drive compressor that the embodiment of the present invention provides, owing to passing through described axial magnetic bearing between rotor-support-foundation system and described stator system, left radial direction magnetic bearing, middle radial direction magnetic bearing and right radial direction magnetic bearing realize the magnetic suspension that on-mechanical contacts, avoid the fretting wear that mechanical bearing brings, improve the rotating speed of compressor and export energy density, and adopt magnetic suspension motor and compressor integrated design, there is compact structure, energy-conserving and environment-protective, run the advantages such as efficient, be specially adapted to energy-conserving and environment-protective oil gas storage equipment of new generation.Magnetic suspension compressor adopts magnetic suspension non-contact suspension bearing, eliminates the fretting wear that mechanical bearing brings, reduces vibrating noise, without the need to lubrication system, has without the advantage such as friction, high rotating speed, high efficiency.Because magnetic suspension compressor is without the need to lubrication, so can be directly installed in closed crude oil pipeline, 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 axis 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;
Embodiment
To be described in further detail the embodiment of the present invention below.
Magnetic suspension single shaft direct-drive compressor of the present invention, its preferably embodiment be:
Comprise rotor-support-foundation system and stator system two-part;
Described rotor-support-foundation system comprises the rotor of the axial magnetic bearing be arranged on successively on screw axis, 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;
Described stator system comprises the stator of the axial magnetic bearing be arranged on successively 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 comprise 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 stator self-locking nut, middle radial displacement transducer, motor stator self-locking nut, right radial direction magnetic bearing stator self-locking nut, right radial displacement transducer, left end cap, right end cap, left seal ring, right seal ring, left shaft position sensor, right shaft position sensor, left protection bearing, right protection bearing, left protection bearing pressure ring and right protection bearing pressure ring,
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 described rotor-support-foundation system with described stator system.
The rotor of described axial magnetic bearing, the rotor of left radial displacement transducer detection ring and left radial direction magnetic bearing is all positioned at screw axis left end radial outside, the rotor of axial magnetic bearing is positioned on the left of the rotor of left radial displacement transducer detection ring and left radial direction magnetic bearing, and be arranged on screw axis by interference fit, on the right side of the rotor that left radial displacement transducer detection ring is positioned at axial magnetic bearing and on the left of the rotor of left radial direction magnetic bearing, and be arranged on screw axis by interference fit, on the right side of the rotor that the rotor of left radial direction magnetic bearing is positioned at axial magnetic bearing and left radial displacement transducer detection ring, and be arranged on screw axis by interference fit, middle radial displacement transducer detection ring, the rotor of middle radial direction magnetic bearing, the rotor of motor, pressure ring, rotor and the right radial displacement transducer detection ring of right radial direction magnetic bearing are all positioned at screw axis right-hand member radial outside, middle radial displacement transducer detection ring is arranged on the left of the rotor of radial direction magnetic bearing, and be arranged on screw axis by interference fit, the rotor of middle radial direction magnetic bearing be arranged on the right side of radial displacement transducer detection ring and motor rotor on the left of, and be arranged on screw axis by interference fit, the rotor of motor is arranged on the right side of the rotor of radial direction magnetic bearing, and be fixedly mounted on screw axis by pressure ring, 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 be arranged on screw axis by interference fit, right radial displacement transducer detection ring is positioned on the left of the rotor of right radial direction magnetic bearing, and be arranged on screw axis by interference fit, the stator of axial magnetic bearing, the stator of left radial direction magnetic bearing, the stator of middle radial direction magnetic bearing, the stator of motor and the stator of right radial direction magnetic bearing are positioned at support radially inner side, the stator of axial magnetic bearing is positioned at outside the rotor radial of axial magnetic bearing, and be 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 be fixedly mounted on support radially inner side by left radial direction magnetic bearing stator self-locking nut, left radial displacement transducer is positioned on the left of the stator of left radial displacement transducer detection ring radial outside and left radial direction magnetic bearing, and be fixedly mounted on the stator of left radial direction magnetic bearing by fastening screw trip bolt, fuel discharge port is positioned at support upper end, and be arranged on support by fastening screw trip bolt, the stator of middle radial direction magnetic bearing is arranged in outside the rotor radial of radial direction magnetic bearing, and be fixedly mounted on support radially inner side by middle radial direction magnetic bearing stator self-locking nut, middle radial displacement transducer is arranged on the left of the stator of radial displacement transducer detection ring radial outside and radial direction magnetic bearing, and be fixedly mounted on the stator of middle radial direction magnetic bearing by fastening screw trip bolt, the stator of motor is positioned at outside the rotor radial of motor, and be 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 be fixedly mounted on support radially inner side by right radial direction magnetic bearing stator self-locking nut, on the right side of the stator that right radial displacement transducer is positioned at right radial direction magnetic bearing and right radial displacement transducer detection ring radial outside, and be fixedly mounted on the stator of right radial direction magnetic bearing by fastening screw trip bolt, left end cap is positioned on the left of support, and be arranged on support by fastening screw trip bolt, right end cap is positioned on the right side of support, and be arranged on support by fastening screw trip bolt, left seal ring is positioned at support and left end cap radial outside, and be welded on the connecting part between support and left end cap by scolding tin, right seal ring is positioned at support and right end cap radial outside, and be welded on the connecting part between support and right end cap by scolding tin, left shaft position sensor is positioned at left end cap, and be fixedly mounted on left end cap by fastening screw trip bolt, right shaft position sensor is positioned at right end cap, and be fixedly mounted on right end cap by fastening screw trip bolt, left protection bearing is positioned at screw axis left end radial outside, and form mechanical portable protective gaps with screw axis, right protection bearing is positioned at screw axis right-hand member radial outside, and form mechanical portable protective gaps with screw axis, left protection bearing is positioned at left end cap radially inner side, and be fixedly mounted on left end cap by left protection bearing pressure ring, right protection bearing is positioned at right end cap radially inner side, and be fixedly mounted on right end cap by right protection bearing pressure ring.
Described axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic bearing and right radial direction magnetic bearing are pure electromagnetic bearing or permanent magnet biased magnetic bearing.
Described screw axis is without magnetic 3J40 stainless steel material.
The trapezoid spiral groove that two sections of rotation directions are contrary is provided with in the middle part of described screw axis.
Described support is low magnetic stainless steel 1Cr18Ni9Ti material.
Described support and end cap two ends are sealedly and fixedly connected.
Described seal ring is terne metal or lead-free tin alloy.
Principle of the present invention is:
As shown in Figure 1, under compressor is in running order, pass through axial magnetic bearing, left radial direction magnetic bearing, middle radial direction magnetic bearing and right radial direction magnetic bearing, keep the radial and axial gap of rotor-support-foundation system and stator system, after rotor-support-foundation system is subject to a certain interference, when footpath/the axial clearance of rotor-support-foundation system changes, footpath/shaft position sensor detects the variable quantity of footpath/axial clearance in time, and be converted into digital transfer to magnetic bearing controller, by controlling the size of footpath/axial magnetic bearing coil current, increase/reduce the electromagnetic force of footpath/axial magnetic bearing, footpath/the axial clearance maintaining magnetic suspension system is even, eliminate interference effect, realize the complete suspension bearing of rotor-support-foundation system, starting electrical machinery subsequently, utilize motor driven rotor high speed rotating, by the trapezoid spiral groove that two sections of rotation directions on screw axis are contrary, liquid is delivered to middle oil outlet from the oil inlet hole at support two ends, thus reach the object of oil transportation.In order to detection rotor displacement signal more accurately, place a radial displacement transducer on each radial direction magnetic bearing side.Wherein, left radial displacement transducer is for detecting the displacement at left radial direction magnetic bearing place, and middle radial displacement transducer is for the displacement at radial direction magnetic bearing place in detecting, and right radial displacement transducer is for detecting the displacement at right radial direction magnetic bearing place.Because screw axis is longer, a shaft position sensor is respectively placed at screw axis left end and right-hand member, for the axial displacement of detection rotor system, after difference processing is carried out to the testing signal of upper shaft position sensor and lower shaft position sensor, signal is transmitted magnetic bearing controller, improves axial magnetic bearing control accuracy.
The present invention's advantage is compared with prior art:
(1) adopt magnetic bearing supporting technology, eliminate the fretting wear of mechanical bearing, without the need to lubrication, improve the rotating speed of compressor drum, extend the working life of compressor; (2) adopt the integrated design of motor and compressor, make compressor arrangement concision and compact more, and can work in fluid, directly can be positioned over pipe interior, reduce pipe-line construction and operation cost.
Specific embodiment:
As shown in Figure 1, magnetic suspension single shaft direct-drive compressor, primarily of rotor-support-foundation system and stator system two-part composition, rotor-support-foundation system mainly comprises: axial magnetic bearing 1 rotor, left radial displacement transducer detection ring 2, left radial direction magnetic bearing 3 rotor, screw axis 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 mainly comprises: axial magnetic bearing 1 stator, left radial direction magnetic bearing 3 stator, middle radial direction magnetic bearing 6 stator, motor 7 stator, right radial direction magnetic bearing 9 stator, 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 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 seal ring 22A, right 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 axial magnetic bearing 1 between magnetic suspension rotor system and magnetic suspension stator system, left radial direction magnetic bearing 3, middle radial direction magnetic bearing 6 and right radial direction magnetic bearing 9 realize the stable suspersion that on-mechanical contacts, axial magnetic bearing 1 rotor, left radial displacement transducer detection ring 2 and left radial direction magnetic bearing 3 rotor are all positioned at screw axis 4 left end radial outside, axial magnetic bearing 1 rotor is positioned on the left of left radial displacement transducer detection ring 2 and left radial direction magnetic bearing 3 rotor, and be arranged on screw axis 4 by interference fit, left radial displacement transducer detection ring 2 to be positioned on the right side of axial magnetic bearing 1 rotor and on the left of left radial direction magnetic bearing 3 rotor, and be arranged on screw axis 4 by interference fit, 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 be arranged on screw axis 4 by interference fit, 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 all positioned at screw axis 4 right-hand member radial outside, middle radial displacement transducer detection ring 5 is arranged on the left of radial direction magnetic bearing 6 rotor, and be arranged on screw axis 4 by interference fit, middle radial direction magnetic bearing 6 rotor to be arranged on the right side of radial displacement transducer detection ring 5 and on the left of motor 7 rotor, and be arranged on screw axis 4 by interference fit, motor 7 rotor is arranged on the right side of radial direction magnetic bearing 6 rotor, and be fixedly mounted on screw axis 4 by pressure ring 8, right radial direction magnetic bearing 9 rotor to be positioned on the right side of pressure ring 8 and on the left of right radial displacement transducer detection ring 10, and be arranged on screw axis 4 by interference fit, right radial displacement transducer detection ring 10 is positioned on the left of right radial direction magnetic bearing 9 rotor, and be arranged on screw axis 4 by interference fit, axial magnetic bearing 1 stator, left radial direction magnetic bearing 3 stator, middle radial direction magnetic bearing 6 stator, 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 be fixedly mounted on support 11 radially inner side by axial magnetic bearing stator self-locking nut 12, left radial direction magnetic bearing 3 stator is positioned at outside left radial direction magnetic bearing 3 rotor radial, and be fixedly mounted on support 11 radially inner side by left radial direction magnetic bearing stator self-locking nut 13, left radial displacement transducer 14 is positioned on the left of left radial displacement transducer detection ring 2 radial outside and left radial direction magnetic bearing 3 stator, and be fixedly mounted on left radial direction magnetic bearing 3 stator by fastening screw trip bolt, fuel discharge port 15 is positioned at support 11 upper end, and be arranged on support 11 by fastening screw trip bolt, middle radial direction magnetic bearing 6 stator is arranged in outside radial direction magnetic bearing 6 rotor radial, and be fixedly mounted on support 11 radially inner side by middle radial direction magnetic bearing stator self-locking nut 16, middle radial displacement transducer 17 is arranged on the left of radial displacement transducer detection ring 5 radial outside and radial direction magnetic bearing 6 stator, and be fixedly mounted on middle radial direction magnetic bearing 6 stator by fastening screw trip bolt, motor 7 stator is positioned at outside motor 7 rotor radial, and be fixedly mounted on support 11 radially inner side by motor stator self-locking nut 18, right radial direction magnetic bearing 9 stator is positioned at outside right radial direction magnetic bearing 9 rotor radial, and be fixedly mounted on support 11 radially inner side by right radial direction magnetic bearing stator self-locking nut 19, right radial displacement transducer 20 is positioned on the right side of right radial direction magnetic bearing 9 stator and right radial displacement transducer detection ring 10 radial outside, and be fixedly mounted on right radial direction magnetic bearing 9 stator by fastening screw trip bolt, left end cap 21A is positioned on the left of support 11, and be arranged on support 11 by fastening screw trip bolt, right end cap 21B is positioned on the right side of support 11, and be arranged on support 11 by fastening screw trip bolt, left seal ring 22A is positioned at support 11 and left end cap 21A radial outside, and be welded on the connecting part between support 11 and left end cap 21A by scolding tin, right seal ring 22B is positioned at support 11 and right end cap 21B radial outside, and be welded on the connecting part between support 11 and right end cap 21B by scolding tin, left shaft position sensor 23A is positioned at left end cap 21A, and be fixedly mounted on left end cap 21A by fastening screw trip bolt, right shaft position sensor 23B is positioned at right end cap 21B, and be fixedly mounted on right end cap 21B by fastening screw trip bolt, left protection bearing 24A is positioned at screw axis 4 left end radial outside, and form mechanical portable protective gaps with screw axis 4, right protection bearing 24B is positioned at screw axis 4 right-hand member radial outside, and form mechanical portable protective gaps with screw axis 4, left protection bearing 24A is positioned at left end cap 21A radially inner 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, Fig. 2 b is rotor system three-dimensional structure schematic diagram of the present invention, rotor-support-foundation system mainly comprises: axial magnetic bearing 1 rotor, left radial displacement transducer detection ring 2, left radial direction magnetic bearing 3 rotor, screw axis 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 and left radial direction magnetic bearing 3 rotor are positioned at screw axis 4 left end radial outside, 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 positioned at screw axis 4 right-hand member radial outside, axial magnetic bearing 1 rotor is positioned at screw axis 4 high order end, and be arranged on screw axis 4 by interference fit, left radial displacement transducer detection ring 2 is positioned on the right side of axial magnetic bearing 1 rotor, and be arranged on screw axis 4 by interference fit, left radial direction magnetic bearing 3 rotor is positioned on the right side of left radial displacement transducer detection ring 2, and be arranged on screw axis 4 by interference fit, middle radial displacement transducer detection ring 5 is arranged on the left of radial direction magnetic bearing 6 rotor, and be arranged on screw axis 4 by interference fit, central diameter is positioned on the left of displacement transducer detection ring 5 on the left of middle radial direction magnetic bearing 6 rotor, and be arranged on screw axis 4 by interference fit, motor 7 rotor is arranged on the right side of radial direction magnetic bearing 6 rotor, and be fixedly mounted on screw axis 4 by pressure ring 8, right radial direction magnetic bearing 9 rotor is positioned on the right side of pressure ring 8, and be arranged on screw axis 4 by interference fit, right radial displacement transducer detection ring 10 is positioned on the right side of right radial direction magnetic bearing 9 rotor, and be arranged on screw axis 4 by interference fit.
Fig. 3 a is stator system sectional view in the present invention, Fig. 3 b is stator system three-dimensional structure schematic diagram in the present invention, stator system mainly comprises: axial magnetic bearing 1 stator, left radial direction magnetic bearing 3 stator, middle radial direction magnetic bearing 6 stator, motor 7 stator, right radial direction magnetic bearing 9 stator, 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 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 seal ring 22A, right 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, axial magnetic bearing 1 stator is positioned at support 11 left end radially inner side, and be fixedly mounted on support 11 by axial magnetic bearing stator self-locking nut 12, left radial direction magnetic bearing 3 stator is positioned on the right side of axial magnetic bearing 1 stator, and be 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 radial direction magnetic bearing 3 stator left side, and be fixedly mounted on left radial direction magnetic bearing 3 stator by fastening screw trip bolt, fuel discharge port 15 is positioned at support 11 upper end, and be arranged on support 11 by fastening screw trip bolt, 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 transducer 17 is arranged in radial direction magnetic bearing 6 stator left side, and be fixedly mounted on middle radial direction magnetic bearing 6 stator by fastening screw trip bolt, motor 7 stator is arranged on the right side of radial direction magnetic bearing 6 stator, and be fixedly mounted on support 11 by motor stator self-locking nut 18, right radial direction magnetic bearing 9 stator is positioned on the right side of motor 7 stator, and be fixedly mounted on support 11 by right radial direction magnetic bearing stator self-locking nut 19, right radial displacement transducer 20 is positioned at right radial direction magnetic bearing 9 stator right side, and be fixedly mounted on right radial direction magnetic bearing 9 stator by fastening screw trip bolt, left end cap 21A is positioned on the left of support 11, and be arranged on support 11 by fastening screw trip bolt, right end cap 21B is positioned on the right side of support 11, and be arranged on support 11 by fastening screw trip bolt, left seal ring 22A is positioned at support 11 and left end cap 21A radial outside, and be welded on the connecting part between support 11 and left end cap 21A by scolding tin, right seal ring 22B is positioned at support 11 and right end cap 21B radial outside, and be welded on the connecting part between support 11 and right end cap 21B by scolding tin, left shaft position sensor 23A is positioned at left end cap 21A, and be fixedly mounted on left end cap 21A by fastening screw trip bolt, right shaft position sensor 23B is positioned at right end cap 21B, and be fixedly mounted on right end cap 21B by fastening screw trip bolt, left protection bearing 24A is positioned at left end cap 21A radially inner 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. 4 is screw axis 4 three-dimensional structure schematic diagram in the present invention, its material is without magnetic 3J40 stainless steel, left protection bearing top circle cylinder 401 forms portable protective gaps with left protection bearing 24A endoporus, axial magnetic bearing external cylindrical surface 402 is for the interference fit location and installation of axial magnetic bearing 1 rotor, left radial displacement transducer detection ring external cylindrical surface 403 is for the interference fit location and installation of left radial displacement transducer detection ring 2, left radial direction magnetic bearing rotor outer circle cylinder 404 is for the interference fit location and installation of left radial direction magnetic bearing 3 rotor, middle radial displacement transducer detection ring external cylindrical surface 405 is for the interference fit location and installation of middle radial displacement transducer detection ring 5, middle radial direction magnetic bearing rotor outer circle cylinder 406 is for the interference fit location and installation of middle radial direction magnetic bearing 6 rotor, outer circle of motor rotor cylinder 407 is for the location and installation of motor 7 rotor and pressure ring 8, right radial direction magnetic bearing rotor outer circle cylinder 408 is for the interference fit location and installation of right radial direction magnetic bearing 9 rotor, right radial displacement transducer detection ring external cylindrical surface 409 is for the interference fit location and installation of right radial displacement transducer detection ring 10, right protection bearing top circle cylinder 410 forms portable protective gaps with right protection bearing 24B endoporus, in the middle part of screw axis 4, left side is counterclockwise trapezoid spiral groove, right side is clockwise trapezoid spiral groove.
Fig. 5 is support 11 three-dimensional structure schematic diagram in the present invention, its material is its material of low magnetic stainless steel 1Cr18Ni9Ti is low magnetic stainless steel 1Cr18Ni9Ti material, left end cap fastening screw pit 1101 and right end cap fastening screw pit 1109 are for the fixed installation of left end cap 21A and right end cap 21B, left oil inlet pipe tapped hole 1102 is respectively used to left oil inlet pipe with right oil inlet pipe tapped hole 1106 and is connected with right oil inlet pipe, left oil inlet hole 1103 and right oil inlet hole 1107 are respectively used to the input of fluid, oil outlet tapped hole 1104 fixedly mounts for fuel discharge port 15, oil outlet 1105 is for the output of fluid, pedestal is installed via hole 1108 and is installed for magnetic suspension single shaft direct-drive compressor and pedestal, right radial direction magnetic bearing stator inner cylindrical surface 1110 is for the location and installation of right radial direction 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 cylindrical surface 1112 is for the location and installation of middle radial direction magnetic bearing 6 stator, left radial direction magnetic bearing stator inner cylindrical surface 1113 is for the location and installation of left radial direction magnetic bearing 3 stator, axial magnetic bearing stator mounting groove 1114 is for the location and installation of axial magnetic bearing 1 stator.
The content be not described in detail in specification of the present invention belongs to the known prior art of professional and technical personnel in the field.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (8)
1. a magnetic suspension single shaft direct-drive compressor, is characterized in that, comprises rotor-support-foundation system and stator system two-part;
Described rotor-support-foundation system comprises the rotor of the axial magnetic bearing (1) be arranged on successively on screw axis (4), left radial displacement transducer detection ring (2), the rotor of left radial direction magnetic bearing (3), middle radial 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);
Described stator system comprises the stator of the axial magnetic bearing (1) be arranged on successively on support (11), the stator of left radial direction magnetic bearing (3), the stator of middle radial direction magnetic bearing (6), the stator of motor (7), the stator of right radial direction magnetic bearing (9), also comprises 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 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 seal ring (22A), right 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),
Realize by described axial magnetic bearing (1), left radial direction magnetic bearing (3), middle radial direction magnetic bearing (6) and right radial direction magnetic bearing (9) magnetic suspension that on-mechanical contacts between described rotor-support-foundation system with described stator system.
2. magnetic suspension single shaft direct-drive compressor according to claim 1, it is characterized in that, the rotor of described axial magnetic bearing (1), the rotor of left radial displacement transducer detection ring (2) and left radial direction magnetic bearing (3) is all positioned at screw axis (4) left end radial outside, the rotor of axial magnetic bearing (1) is positioned on the left of the rotor of left radial displacement transducer detection ring (2) and left radial direction magnetic bearing (3), and be arranged on screw axis (4) by interference fit, on the right side of the rotor that left radial displacement transducer detection ring (2) is positioned at axial magnetic bearing (1) and on the left of the rotor of left radial direction magnetic bearing (3), and be arranged on screw axis (4) by interference fit, the rotor of left radial direction magnetic bearing (3) is positioned at rotor and left radial displacement transducer detection ring (2) right side of axial magnetic bearing (1), and be arranged on screw axis (4) by interference fit, middle radial displacement transducer detection ring (5), the rotor of middle radial direction magnetic bearing (6), the rotor of motor (7), pressure ring (8), rotor and the right radial displacement transducer detection ring (10) of right radial direction magnetic bearing (9) are all positioned at screw axis (4) right-hand member radial outside, middle radial displacement transducer detection ring (5) is arranged on the left of the rotor of radial direction magnetic bearing (6), and be arranged on screw axis (4) by interference fit, the rotor of middle radial direction magnetic bearing (6) is arranged on the left of the rotor of radial displacement transducer detection ring (5) right side and motor (7), and be arranged on screw axis (4) by interference fit, the rotor of motor (7) is arranged on the right side of the rotor of radial direction magnetic bearing (6), and be fixedly mounted on screw axis (4) by pressure ring (8), 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) left side, and be arranged on screw axis (4) by interference fit, right radial displacement transducer detection ring (10) is positioned on the left of the rotor of right radial direction magnetic bearing (9), and be arranged on screw axis (4) by interference fit, the stator of axial magnetic bearing (1), the stator of left radial direction magnetic bearing (3), the stator of middle radial direction magnetic bearing (6), the stator of motor (7) and the stator of right radial direction magnetic bearing (9) are positioned at support (11) radially inner side, the stator of axial magnetic bearing (1) is positioned at outside the rotor radial of axial magnetic bearing (1), and be fixedly mounted on support (11) radially inner side by axial magnetic bearing stator self-locking nut (12), the stator of left radial direction magnetic bearing (3) is positioned at outside the rotor radial of left radial direction magnetic bearing (3), and be fixedly mounted on support (11) radially inner side by left radial direction magnetic bearing stator self-locking nut (13), left radial displacement transducer (14) 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 fastening screw trip bolt, fuel discharge port (15) is positioned at support (11) upper end, and be arranged on support (11) by fastening screw trip bolt, the stator of middle radial direction magnetic bearing (6) is arranged in outside the rotor radial of radial direction magnetic bearing (6), and be fixedly mounted on support (11) radially inner side by middle radial direction magnetic bearing stator self-locking nut (16), middle radial displacement transducer (17) is arranged on the left of the stator of radial displacement transducer detection ring (5) radial outside and radial direction magnetic bearing (6), and be fixedly mounted on the stator of middle radial direction magnetic bearing (6) by fastening screw trip bolt, the stator of motor (7) is positioned at outside the rotor radial of motor (7), and be fixedly mounted on support (11) radially inner side by motor stator self-locking nut (18), the stator of right radial direction magnetic bearing (9) is positioned at outside the rotor radial of right radial direction magnetic bearing (9), and be fixedly mounted on support (11) radially inner side by right radial direction magnetic bearing stator self-locking nut (19), on the right side of the stator that right radial displacement transducer (20) is positioned at right radial direction magnetic bearing (9) and right radial displacement transducer detection ring (10) radial outside, and be fixedly mounted on the stator of right radial direction magnetic bearing (9) by fastening screw trip bolt, left end cap (21A) is positioned at support (11) left side, and be arranged on support (11) by fastening screw trip bolt, right end cap (21B) is positioned at support (11) right side, and be arranged on support (11) by fastening screw trip bolt, left seal ring (22A) is positioned at support (11) and left end cap (21A) radial outside, and be welded on the connecting part between support (11) and left end cap (21A) by scolding tin, right seal ring (22B) is positioned at support (11) and right end cap (21B) radial outside, and be welded on the connecting part between support (11) and right end cap (21B) by scolding tin, left shaft position sensor (23A) is positioned at left end cap (21A), and be fixedly mounted on left end cap (21A) by fastening screw trip bolt, right shaft position sensor (23B) is positioned at right end cap (21B), and be fixedly mounted on right end cap (21B) by fastening screw trip bolt, left protection bearing (24A) is positioned at screw axis (4) left end radial outside, and form mechanical portable protective gaps with screw axis (4), right protection bearing (24B) is positioned at screw axis (4) right-hand member radial outside, and form mechanical portable protective gaps with screw axis (4), left protection bearing (24A) is positioned at left end cap (21A) radially inner 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).
3. magnetic suspension single shaft direct-drive compressor according to claim 2, it is characterized 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) are pure electromagnetic bearing or permanent magnet biased magnetic bearing.
4. the magnetic suspension single shaft direct-drive compressor according to claim 1,2 or 3, is characterized in that, described screw axis (4) is without magnetic 3J40 stainless steel material.
5. the magnetic suspension single shaft direct-drive compressor according to claim 1,2 or 3, is characterized in that, described screw axis (4) middle part is provided with the contrary trapezoid spiral groove of two sections of rotation directions.
6. the magnetic suspension single shaft direct-drive compressor according to claim 1,2 or 3, is characterized in that, described support (11) is low magnetic stainless steel 1Cr18Ni9Ti material.
7. the magnetic suspension single shaft direct-drive compressor according to claim 1,2 or 3, is characterized in that, described support (11) and end cap (21) two ends are sealedly and fixedly connected.
8. the magnetic suspension single shaft direct-drive compressor according to claim 1,2 or 3, is characterized in that, described seal ring (22) is terne metal or lead-free tin alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410617445.4A CN104373352B (en) | 2014-11-05 | 2014-11-05 | Magnetic suspension single shaft direct-drive compressor |
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| CN201410617445.4A CN104373352B (en) | 2014-11-05 | 2014-11-05 | Magnetic suspension single shaft direct-drive compressor |
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| CN104373352B CN104373352B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106286361A (en) * | 2015-06-26 | 2017-01-04 | Lg电子株式会社 | Compressor and include the refrigeration system of this compressor |
| 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 |
| CN107742995A (en) * | 2017-12-04 | 2018-02-27 | 南京磁谷科技有限公司 | A kind of mounting structure of the 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 |
| CN110828252A (en) * | 2019-11-21 | 2020-02-21 | 南京普暴教育科技有限公司 | Robot programming device for teaching robot program |
| WO2021114492A1 (en) * | 2019-12-11 | 2021-06-17 | 南京磁谷科技股份有限公司 | Structure using axial sensor for gap adjustment in air compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106286361A (en) * | 2015-06-26 | 2017-01-04 | Lg电子株式会社 | Compressor and include the refrigeration system of this compressor |
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| 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 |
| CN110828252A (en) * | 2019-11-21 | 2020-02-21 | 南京普暴教育科技有限公司 | Robot programming device for teaching robot program |
| 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 |
| WO2021114492A1 (en) * | 2019-12-11 | 2021-06-17 | 南京磁谷科技股份有限公司 | Structure using axial sensor for gap adjustment in air compressor |
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| CN104373352B (en) | 2016-08-24 |
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