CN206582112U - Double permanent magnetism two-stage screw compressors - Google Patents
Double permanent magnetism two-stage screw compressors Download PDFInfo
- Publication number
- CN206582112U CN206582112U CN201621492530.3U CN201621492530U CN206582112U CN 206582112 U CN206582112 U CN 206582112U CN 201621492530 U CN201621492530 U CN 201621492530U CN 206582112 U CN206582112 U CN 206582112U
- Authority
- CN
- China
- Prior art keywords
- host shell
- permanent magnetism
- permanent
- rotor
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model discloses a kind of pair of permanent magnetism two-stage screw compressor.Described pair of permanent magnetism two-stage screw compressor includes one-level permanent magnet frequency conversion motor, one-level screw host, two grades of permanent magnet frequency conversion motors and two grades of screw hosts.The one-level permanent magnet frequency conversion motor and the coaxial integrally connected of one-level screw host.Two grades of permanent magnet frequency conversion motors and the coaxial integrally connected of two grades of screw hosts.The one-level screw host is connected with two grades of screw bodies.The one-level permanent magnet frequency conversion motor includes the first electric machine casing.Two grades of permanent magnet frequency conversion motors include the second electric machine casing.Described pair of permanent magnetism two-stage screw compressor compact in design is succinct rationally and efficient, and operating is stable.
Description
Technical field
The utility model is related to a kind of helical-lobe compressor, particularly a kind of double permanent magnetism two-stage screw pressures for carrying out air compression
Contracting machine, and double reversion oil cooling permanent magnet all-in-one machines.
Background technology
The single and double level screw machine of tradition generally is normal pressure or two single stage compress main frame portings are directly simple
Hard tube is connected, and carries out exhaust in parallel, and individual layer compression chamber is using radial direction directly air-breathing, and efficiency low noise is big, cast rotor, dynamic balancing
It is bad, no buffering, no pressure protection, no cascade EDFA, and the gear-box with high cost high noisy, and split shaft coupling company
Connect, volume is necessarily large and bulky, manufacture is installed and bothered very much, resonance is also easily produced, can not freely distribute inner pressure ratio, conversion supply
Pressure and rotating speed, efficiency are low, it has not been convenient to produce manufacture in enormous quantities, and starting current and moment of torsion are very big, have very big to power network and unit
Impact.Can not directly it invert, high energy consumption can not reach one-level energy-saving effect.How Reasonable structure is laid out, and improves screw machine
Rotating speed and pressure limit, keep high reliability stability, greatly improve efficiency, be then the target that technical staff pursues all the time.
Utility model content
One of the purpose of this utility model is to overcome deficiency of the prior art to simplify and be laid out there is provided a kind of structure
Rationally efficient double permanent magnetism two-stage screw compressors.The utility model pressure is covered and type coverage is wide and wide, can be freely
Variable speed intelligence reasonable distribution pressure ratio, exhaust outlet can automatically adjust size to adapt to different pressure ratio and rotating speed, and noise is lower.
To realize object above, the utility model is achieved through the following technical solutions：
The utility model provides a kind of pair of permanent magnetism two-stage screw compressor.Described pair of permanent magnetism two-stage screw compressor includes one
Level permanent magnet frequency conversion motor, one-level screw host, two grades of permanent magnet frequency conversion motors and two grades of screw hosts.The one-level permanent-magnetic variable-frequency electricity
Machine includes the first electric machine casing, the first permanent-magnet stator and the first p-m rotor.The one-level screw host includes the first main case
Body, the first male rotor and the first female rotor.First host shell is provided with air inlet.First electric machine casing with it is described
First host shell is connected and connected.First permanent-magnet stator is arranged in first electric machine casing.First permanent magnetism
Rotor is connected with first male rotor.First male rotor is engaged with first female rotor conjugation.Two grades of permanent magnetism
Variable-frequency motor includes the second electric machine casing, the second permanent-magnet stator and the second p-m rotor.Two grades of screw hosts include second
Host shell, the second male rotor and the second female rotor.Second electric machine casing is connected and connected with second host shell.
Second permanent-magnet stator is arranged in second electric machine casing.Second p-m rotor connects with second male rotor
Connect.Second male rotor is engaged with second female rotor conjugation.First host shell and second host shell
Connection.Second host shell is provided with exhaust outlet.
Preferably, it is provided with axial suction muffler in first host shell.The axial suction muffler is positive along described first
The axially extending setting of rotor.
Preferably, the air admission hole radially extending along first male rotor, and connected with the axial suction muffler.
Preferably, at least one in first electric machine casing and second electric machine casing be provided with cooling oil-in and
Cooling-oil outlet.
Preferably, first host shell is provided with the second cooling oil with least one in second host shell and entered
Mouth and the second cooling-oil outlet.
Preferably, described pair of permanent magnetism two-stage screw compressor also includes oil guide pipe.One end of the oil guide pipe is from described
The outer surface of one host shell connects the inside of first host shell, and the other end of the oil guide pipe is from first motor
The outer surface of housing connects the inside of first electric machine casing.
Preferably, it is provided with cooling oil groove on the madial wall of the electric machine casing.
Preferably, first p-m rotor is provided with the first taper hole；One end of first male rotor is provided with first
The axis of cone；First axis of cone is contained in first taper hole, and first axis of cone is interference fitted each other with first taper hole；
And/or
Second p-m rotor is provided with the second taper hole；One end of second male rotor is provided with second axis of cone；Institute
Second axis of cone is stated to be contained in second taper hole, and second axis of cone is interference fitted each other with second taper hole.
Preferably, first male rotor is integrally formed with first permanent-magnet stator, and is coaxially disposed；And/or, it is described
Second male rotor is integrally formed with second permanent-magnet stator, and is coaxially disposed.
Preferably, described pair of permanent magnetism two-stage screw compressor also includes disc spring.The disc spring is arranged on first main frame
In housing.The disc spring is set to lead with first male rotor and described first respectively along the axial direction of first male rotor
Casing body phase is abutted.
Preferably, described pair of permanent magnetism two-stage screw compressor also includes bearing.Bearing described in buffering stress is set in described
On first male rotor；The bearing is set to abut against with first host shell along the axial direction of first male rotor.
Preferably, described pair of permanent magnetism two-stage screw compressor also includes anti-rotation pressing plate.The anti-rotation pressing plate and the bearing
Abut and set.
Preferably, it is provided with main oil-hole on first host shell.
Preferably, described pair of permanent magnetism two-stage screw compressor also includes interpolar cooling oilhole, and the interpolar cooling oilhole is set
Put between the one-level screw host and two grades of screw hosts.
Preferably, described pair of permanent magnetism two-stage screw compressor also includes pressure sensor and controller.The pressure sensing
Device is arranged at second host shell, for detecting the gas pressure intensity in second host shell.The controller respectively with
The pressure sensor and one-level permanent magnet frequency conversion motor electrical connection, to be controlled according to the signal that the pressure sensor is exported
Make the one-level permanent magnet frequency conversion motor.
Preferably, described pair of permanent magnetism two-stage screw compressor also includes pressure valve.State pressure valve and be arranged at first master
Casing body；The gas pressure intensity that the pressure valve is set in first host shell is opened when increasing to preset value.
Compared with prior art, the double permanent magnetism two-stage screw compressor structures of the utility model are simplified and stability is strong.It is preferred that
Ground, by being provided with cooling oil-in and cooling-oil outlet on the first electric machine casing, the second electric machine casing, so as to realize to phase
The cooling of the first electric machine casing and the second electric machine casing is answered, and the effect of lubrication internal part can be played simultaneously.It is described double
Permanent magnetism two-stage screw compressor does not need extra radiator structure, so as to simplify structure.
Brief description of the drawings
The dimensional structure diagram for a kind of pair of permanent magnetism two-stage screw compressor that Fig. 1 provides for the utility model.
Fig. 2 is provided with front view during oil guide pipe for Fig. 1 double permanent magnetism two-stage screw compressors, and partly in Fig. 1, this does not show
The structure gone out is originally being illustrated.
Fig. 3 is the sectional view of Fig. 1 double permanent magnetism two-stage screw compressors.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
Fig. 1 to Fig. 3 is referred to, its a kind of pair of permanent magnetism two-stage screw compressor 101 provided for the utility model.It is described double
Permanent magnetism two-stage screw compressor 101 include one-level permanent magnet frequency conversion motor 10, two grades of variable-frequency motor 10b, one-level screw host 20 and
Two grades of screw host 20b.
The one-level permanent magnet frequency conversion motor 10 includes the first electric machine casing 11, the first permanent-magnet stator 14 and the first p-m rotor
15.The one-level screw host 20 includes the first host shell 21, the first male rotor 28 and the first female rotor (not shown).
First host shell 21 is provided with air inlet 212.First electric machine casing 11 is connected with first host shell 21
And connection.First permanent-magnet stator 14 is arranged in first electric machine casing 11.First p-m rotor 15 with it is described
First male rotor 28 is connected.First male rotor 28 is engaged with first female rotor conjugation.
Two grades of permanent magnet frequency conversion motor 10b include the second electric machine casing 11b, the second permanent-magnet stator 14b and the second permanent magnetism
Rotor 15b.Two grades of screw host 20b include the second host shell 21b, the second male rotor 28b and the second female rotor (in figure
It is not shown).The second electric machine casing 11b is connected and connected with the second host shell 21b.Second permanent-magnet stator
14b is arranged in the second electric machine casing 11b.The second p-m rotor 14b is connected with the second male rotor 28b.Institute
The second male rotor 28b is stated to engage with second female rotor conjugation.First host shell 21 and second host shell
21b is connected.The second host shell 21b is provided with exhaust outlet 212b.
The one-level variable-frequency motor 10 is connected with the one-level screw host 20.The one-level screw host 20 and described two
Level screw host 20b connections.Two grades of screw host 20b are connected with two grades of variable-frequency motor 10b.It that is to say, such as scheming
Show middle above-below direction, the one-level permanent magnet frequency conversion motor 10 is individually connected with two grades of variable-frequency motor 10b.
The one-level permanent magnet frequency conversion motor 10, two grades of permanent magnet frequency conversion motor 10b can reverse drives corresponding described one
Level screw host 20, two grades of screw host 20b.The one-level permanent magnet frequency conversion motor 10, two grades of permanent magnet frequency conversion motors
10b has electric machine casing 11,11b respectively.The electric machine casing 11,11b have inner volume.In order to strengthen heat dispersion and drop
Low-loss, the one-level, the second electric machine casing 11,11b have respectively cools down oil-in 12,12b, and cooling-oil outlet 13,
13b.The cooling oil-in 12,12b, and cooling-oil outlet 13,13b in poroid, and with the corresponding electric machine casing 11,
11b inner volume is connected.Correspondingly, the cooling oil-in 12,12b can be by the lubricating oil for cooling down and lubricating
(not shown) is irrigated to the corresponding one-level, the second electric machine casing 11,11b, and is cooled down, lubricated corresponding described
One-level permanent magnet frequency conversion motor 10, two grades of permanent magnet frequency conversion motor 10b.In the present embodiment, compared to air-cooled design, described one
Level, two grades of permanent magnet frequency conversion motors 10,10b are all lubricated and cooled down using internal oil passages, without structures such as outside cumbersome connections
Design, and the compression chamber (non-label in figure) of screw host can be injected directly into, close to isotherm compression, constant temperature is cooled down not by external rings
Border influences, and unit operation is steady, non-maintaining.
Referring to Fig. 2, in order to lift cooling cycle efficiency, as deformation, first electric machine casing 11 and described first
Host shell 21 is connected by oil guide pipe 52.First electric machine casing 11 is connected with the second electric machine casing 11b by oil guide pipe 52.Institute
State oil guide pipe 51,52 be arranged on first electric machine casing 11, first host shell 21, the second electric machine casing 11b it is outer
Portion.Correspondingly, first host shell 21 is provided with two through holes 12,13 circulated for cooling oil.Pass through the second motor casing
Oil inlet 13b on body 11b, injects cooling oil, cooling oil is after the second electric machine casing 11b internal heat exchanges from oil-out 12b
Into in oil guide pipe 51, and it is that the first motor 10 is cooled down to enter from oil guide pipe 51, oil inlet 12 in the first electric machine casing 11.So
Afterwards, cooling oil enters oil guide pipe 52 from oil-out 13, enters back into and cools in the first host shell 21 for the first main frame 21, then certainly
Oil-out 214 is discharged.The circulation path of cooling oil can also enter in the first host shell 21 from oil-out 214 in turn, from
Oil inlet 13b is discharged.
For lift-off seal performance, first electric machine casing 11 can be integrated part with first host shell 21.
The second electric machine casing 11b and the second host shell 21b can also be integrated part, that is, be integrally formed and be made.
Lubricated and cooling performance in order to avoid shortage, the lifting of lubricating oil, on the electric machine casing 11,11b madial wall
It is provided with cooling oil groove 112,112b.The cooling oil groove 112,112b can store lubricating oil.In the one-level, the second motor
When lubricating oil in housing 11,11b is short because of consumption, the cooling oil groove 112,112b memory storages associated lubrication oil can
Corresponding supplement is provided.In the present embodiment, the cooling oil groove 112, the groove-like of 112b shape undulate.Following
The second cooling oil groove 214 is provided with host shell 21.For one-level, the second electric machine casing 11,11b described in lift-off seal performance
For double Shell, and surround compression chamber, it is to avoid tell oily problem.
The one-level, two grades of permanent magnet frequency conversion motors 10,10b also include first, second permanent-magnet stator 14,14b, first, the
Two p-m rotors 15,15b.First, second permanent-magnet stator 14,14b and corresponding first, second p-m rotor 15,15b
Corresponding matching, and opposed rotatable set, so as to export corresponding power.
The one-level, two grades of permanent magnet frequency conversion motors 10,10b also include first, second axis of cone 16,16b.Described one, second
The axis of cone 16,16b are tapered shaft.In the present embodiment, described one, second axis of cone 16 is arranged on first, second male rotor
28th, 28b one end, and being integrally formed.Described one, second axis of cone 16,16b can lift transmission efficiency.Described one, second axis of cone
16th, 16b respectively with corresponding first, second p-m rotor 15,15b driving contacts.Specifically, first, second permanent magnetism
Rotor 15,15b are provided with the first taper hole, the second taper hole (not indicated in figure).Described one, second axis of cone 16,16b plug respectively to
In first, second taper hole of correspondence, and it is interference fitted each other, so that improving stability energy and raising transmission efficiency.Further, institute
One, second axis of cone 16,16b is stated to realize into one by fastener 17,17b with corresponding first, second p-m rotor 15,15b
Step is fastenedly connected.Oil filler point (not shown) is provided with described one, second axis of cone 16,16b.All oil filler points can pass through
Irrigate lubricating oil and strengthen cooling and greasy property.Described one, second axis of cone 16,16b and following corresponding (one-level, two grades) sun
Rotor 28,28b are connected by stop nut interference, can prevent from loosening and inverting during Large-torsion transmisson, so as to lift firm transmission
Performance.
In the present embodiment, first, second male rotor 28,28b by the axle of tapered shape with to first, second forever
Bellmouth on magnet rotor 15,15b is to that with grafting, can realize interference fit, so as to lift the property that coaxial interference is reliably driven
Energy.
In the present embodiment, the second electric machine casing 11b is realized by single supporter 18 supports and positions.It is described
Supporter 18 is set with supporting the second electric machine casing 11b, and can realize positioning, it is to avoid is crossed and is positioned, can effectively ensure that
To neutral equilibrium.
Positioning spigot 19,19b are provided with (the one-level, two grades) electric machine casing 11,11b.The positioning spigot 19,
19b respectively with the corresponding one-level, two grades of screw hosts 20,20b is spacing coordinates, so as to realize convenient assembling and precisely coaxial
Set.In order to further lift precise positioning performance, the positioning spigot 19,19b can also coordinate the corresponding conical surface, so as to fill
Code insurance card is coaxially disposed.
The one-level, two grades of screw hosts 20,20b have the first host shell 21, the second host shell 21b respectively.Institute
State one-level, the second host shell 21,21b compression chamber of the inside with corresponding sealing shape.On first host shell 21
It is provided with air entry 212.The air entry 212 is one-level suction hole.Exhaust outlet is provided with the second host shell 21b
212b.The exhaust outlet 212b is secondary exhaust hole.The one-level, the second host shell 21,21b are tightly connected one.It is described
One-level, the second host shell 21,21b are double-deck compression chamber, enhance resistance to compression, noise-reducing, sealing property.
Axial suction muffler 22 is provided with first host shell 21.The axial suction muffler 22 is i.e. along the described first master
Realize air-breathing in the axial direction of casing body 21.Compared to such as radial suction mode in the past, the axial gettering efficiency of suction muffler 22 is more
Height, running noise is lower.The axial suction muffler 22 is connected with the air entry 212.In the present embodiment, the air entry
212 is different from the bearing of trend of the axial suction muffler 22, are not arranged on the same straight line, so as to as prevent lubrication logical as possible
Cross axial suction muffler 22 and reach the air entry 212.Even if lubricating oil can be reached in the air entry 212, it is also not possible to outer
Overflow to outside the first host shell 21.More specifically, the suction muffler 22 radially extends setting along first host shell 21,
Setting is connected so as to vertical with the axial suction muffler 22.
The one-level screw host 20 also includes exhaust bearing block 23.The exhaust bearing block 23 is contained in first master
In the compression chamber of casing body 21.Further, the exhaust bearing block 23 is integrally formed in integral piece with the host shell 21,
So as to reduce locating and machining position accuracy demand.The second screw host 20b also includes exhaust bearing block 23b.
For lift-off seal performance, the one-level screw host 20 also includes flange (not indicated in figure).The flange is set
Put between first host shell 21 and first electric machine casing 11.Further, double-round adpting flange seam is passed through
Design, can not only be matched, additionally it is possible to can be connected peace with single magneto, common electric machine and diesel engine with double magnetoes
Dress, shares a mounting flange face, highly versatile.
The one-level screw host 20 also includes disc spring 24.The disc spring 24 is arranged on the cavity volume of the exhaust bearing block 23
It is interior.The both sides of the disc spring 24 can be abutted against with the first host shell 21 and first male rotor 11 respectively.The disc spring 24
Flexible buffer performance can be lifted, it is to avoid the first male rotor 11 is connected on the first host shell 21 when that may vibrate.
The one-level screw host 20 also includes clutch shaft bearing 203.Specifically, the clutch shaft bearing 203 is arranged on described
In first host shell 21, and it is set on one end of first male rotor 28.The clutch shaft bearing 203 is relative to described
One end of one male rotor 28 is provided projectingly.The clutch shaft bearing 203 can be abutted against with the disc spring 24.The clutch shaft bearing 203
It is arranged on the exhaust bearing block 23.
The one-level screw host 20 also includes anti-rotation pressing plate 25.The anti-rotation pressing plate 25 can be with the clutch shaft bearing 203
Abut against, so as to avoid clutch shaft bearing 203 from rotating.Further, the anti-rotation pressing plate 25 is abutted with the disc spring 24, with
The disc spring 24 is avoided to rotate, so as to strengthen the flexible buffer performance of the disc spring 24.
Self-lubricating oilhole 214 is provided with first host shell 21.The self-lubricating oilhole 214 can irrigate lubrication
Oil, so as to lubricate and cool down the part inside first host shell 21.
The one-level screw host 20, two grades of screw host 20b also include multiple bearings 27,27b.The bearing 27,27b
It is arranged on the one-level, the second host shell 21, in 21b.The bearing 27,27b are insulation bearing.All bearings 27,27b have
From oil jet lubrication, compact conformation reduces mounting hole.Correspondingly, in the present embodiment, first host shell 11 and described second
Bearing 27,27b need not be set in host shell 11b, so that compact conformation, space surplus.
The one-level, two grades of screw hosts 20,20b also include the first male rotor 28, the second male rotor 28b.Described first
Male rotor 28 (the second male rotor 28b) is contained in first host shell 21 (the second host shell 21b) compression chamber.Institute
The first male rotor 28 is stated to be connected with the one-level p-m rotor 14.It is described in order to lift transmission efficiency and enhancing stability
First male rotor 28 is integrally formed with the one-level p-m rotor 14, and is coaxially disposed.The second male rotor 28b and described two
Level p-m rotor 14b is integrally formed, and is coaxially disposed.First male rotor 28 contacts setting with the anti-rotation pressing plate 25.
Correspondingly, the one-level screw host 20 also includes the female rotor matched with first male rotor 28 (in figure not
Show).Two grades of screw host 20b also include the female rotor (not shown) matched with the second male rotor 28b.For
Lifting transmission efficiency, the one-level, the second male rotor 28,28b use the asymmetric equidistant Profile Design of patent tooth form, draw ratio
It is small, and with more stable balance quality.
In order to further enhance cooling, greasy property, the one-level screw host 20 also includes main jet oilhole 29.The master
Nozzle opening 29 is arranged on first host shell 21.As deformation, the main jet oilhole 29 is arranged on first main frame
Junction (i.e. interpolar housing 30) between the host shell 21b of housing 21 and second.
In order to lift cooling and lubrication and reduce other adverse effects, the one-level screw host 20 with described two grades
Interpolar housing 30 between screw host 20 uses independent oil spout.Specifically, interpolar cooling is provided with the interpolar housing 30
Oilhole 32.The interpolar cooling oilhole 32 is connected with the inner volume of the interpolar housing 30, and can be by moistening to individually perfusion
Lubricating oil, so as to ensure that lubricating oil is directly sucked in, crushing is low, close to isotherm compression, prevents condensed water wash rice from going out, and reduces noise, prevents
Produce resonance.Further, the interpolar housing 30 uses double-layer seal Intermediate Gray oil return, oil-cooled motor and screw host oil circuit
One.In order to further lift steady running performance, by setting special oil leak groove (not shown), and with anticreep
And special antistatic design bearing combination.
In order to be lifted pressure sensor 38 is provided with security performance, second host shell 21.The pressure sensing
Device 38 is used for the pressure for detecting the compressed gas in second host shell 21.The pressure sensor 38 can will be corresponding
Signal is delivered to controller (not shown).The controller can control the one-level magneto 11.As needed, exist
When the pressure of compressed gas in second host shell 21 increases to preset value, the controller can control the one-level
Magneto 11 reduces rotating speed, or even shuts down.It is envisioned that the controller can be industrial computer or host computer etc..
In order to further be lifted safety valve 34 is provided with security performance, the second host shell 21b.It is contemplated that
It is that the safety valve 34 is machinery valve, and can be automatic when the gas pressure intensity in the second host shell 21b exceedes a certain numerical value
Open, it is to avoid the pressure sensor 38 causes pressure persistently to become big and occur safety problem when failing.It is envisioned that the
The reason for gas pressure intensity persistently becomes big in one host shell 21, the second host shell 21b gas outlet 212b blockings when possible
Rather than realize normal outlet.The safety valve 34 prevents pressure excessive, is released so as to carry out corresponding gas pressure.Enter one
Temperature sensor 36 is provided with step ground, the interpolar housing 30.The temperature sensor 36 is used to detect corresponding temperature, from
And corresponding safety warning is provided.Another temperature sensor 36 is arranged on the one-level magneto 10.The temperature is passed
Sensor 36 is connected with the controller.The controller controls the first magneto 10 according to corresponding temperature signal.
The primary input axle of described pair of permanent magnetism two-stage screw compressor 101 can carry out free nothing in the range of 800~6000 turns
Level speed governing, can cover 11-315kW power, type coverage is wide and wide, the intelligent reasonable distribution pressure ratio of free variable speed, exhaust
Mouthful size can be automatically adjusted to adapt to different pressure ratio and rotating speed, and noise is lower.Work is only capable of compared to compressor in the prior art
Make in the normal pressure working environment less than 1Mpa, described pair of permanent magnetism two-stage screw compressor 101 can be operated in 0.2-2Mpa pressure models
In enclosing, so that with the bigger scope of application, versatility is stronger.In addition, described pair of permanent magnetism two-stage screw compressor 101 improves section
Can performance and with higher cost performance.Specifically, high energy efficiency permanent magnetism electrical efficiency improves 5%~8%, reduces the gear-box axis of cone one
Body can improve transmission efficiency 2%, and screw host compresses than ordinary single-stage averagely improves efficiency 15~20%, per hour energy saving
22%~30%, the super one-level efficiency of synthesis energy saving, than conventional gear design main frame material manufacture cost savings 40%, profile is installed
, there is very high cost performance in the small compact saving space of size.
Preferably, described pair of permanent magnetism two-stage screw compressor 101 need not be attached using hard tube, more efficient, be made an uproar
Sound is smaller, and dynamic balancing is more preferable, with buffering and overvoltage protection, with cascade EDFA.In addition, described pair of permanent magnetism two-stage screw compression
Machine 101 avoids the high cost high noisy problem of gear-box, it is to avoid use multiple bearing multi-gear variable speed, needs independent shaft coupling to connect
Connect, the big heaviness of volume, manufacture is installed and bothered very much, the problem of easily producing resonance, it is to avoid using the connection of common ventilated machine,
Inner pressure ratio, conversion supply gas pressure can not freely be distributed and the problem of rotating speed, it is to avoid be inconvenient to produce manufacture, startup is electric
Stream and moment of torsion are very big, the problem of having very big impact to power network and unit, it is to avoid can not directly invert, and to cause drive end be bavin
Oil machine connects suitable very complicated, and trouble point is more and can not fully ensure centering, and parts are more, and cost is high, to the coaxial of hole axle
Precision and alignment pin required precision are also very high, and the very high starting current noise of product batch production scrappage is big, can not reach section
Can effect.
It should be noted that occur in the utility model " on " with " under " it is relative concept, refer to such as above and below Fig. 2
Direction.In addition, " left side " is relative concept with " right side ", left and right directions as shown in Figure 2 is referred to, and one described in corresponding left end
Level, two grades of screw hosts 20,20b suction ends, right-hand member are the one-level, two grades of screw hosts 20,20b exhaust ends.
The utility model preferred embodiment is these are only, is not used to limit to protection domain of the present utility model, it is any
Modification, equivalent substitution or improvement in the utility model spirit etc., all cover in right of the present utility model.
Claims (16)
1. pair permanent magnetism two-stage screw compressor, it is characterised in that including：
One-level permanent magnet frequency conversion motor, one-level screw host, two grades of permanent magnet frequency conversion motors and two grades of screw hosts；The one-level permanent magnetism
Variable-frequency motor includes the first electric machine casing, the first permanent-magnet stator and the first p-m rotor；The one-level screw host includes first
Host shell, the first male rotor and the first female rotor；First host shell is provided with air inlet；First electric machine casing
Seam flange is added to be connected and connect with the first host shell dowel hole；First permanent-magnet stator is arranged at described first
In electric machine casing；First p-m rotor is connected with first male rotor；First male rotor turns with described first the moon
Son conjugation engagement；
Two grades of permanent magnet frequency conversion motors include the second electric machine casing, the second permanent-magnet stator and the second p-m rotor；Described two grades
Screw host includes the second host shell, the second male rotor and the second female rotor；Second electric machine casing and the described second master
Casing body connection dowel hole adds seam flange and connection；Second permanent-magnet stator is arranged in second electric machine casing；
Second p-m rotor is connected with second male rotor；Second male rotor is engaged with second female rotor conjugation；
First host shell is connected with second host shell；Second host shell is provided with exhaust outlet.
2. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
Axially double-deck suction muffler is provided with first host shell；
Axially extending setting of the axial suction muffler along first male rotor.
3. according to claim 2 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
The air admission hole is radially extended along first male rotor, and is connected with the axial suction muffler.
4. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
First electric machine casing is provided with cooling oil-in and cooling-oil outlet with least one in second electric machine casing.
5. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
First host shell and at least one in second host shell are provided with the second cooling oil-in and second cold
But oil export.
6. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that also include：
Oil guide pipe, one end of the oil guide pipe connects the pressure of first host shell from the outer surface of first host shell
Contracting intracavitary portion, the other end of the oil guide pipe connects the first motor cooling housing from the outer surface of first electric machine casing
Inside.
7. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
Cooling oil groove is provided with the madial wall of the motor cooling housing.
8. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
First p-m rotor is provided with the first taper hole；One end of first male rotor is provided with first axis of cone；Described
One axis of cone is contained in first taper hole, and first axis of cone is interference fitted each other with first taper hole and end face big nut is locked
Tightly；And/or
Second p-m rotor is provided with the second taper hole；One end of second male rotor is provided with second axis of cone；Described
Two axis of cone are contained in second taper hole, and second axis of cone is interference fitted each other with second taper hole and end face big nut is locked
Tightly.
9. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
First male rotor is integrally formed with first permanent-magnet stator, and is coaxially disposed；And/or
Second male rotor is integrally formed with second permanent-magnet stator, and is coaxially disposed.
10. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that also include：
Disc spring, the disc spring is arranged on exhaust end in first and second host shell；
The disc spring be set to can along the axial direction of first male rotor respectively with first male rotor and first main frame
Housing buffers stress.
11. according to claim 10 pair of permanent magnetism two-stage screw compressor, it is characterised in that also include：
Bearing, the bearing is set on first male rotor；The bearing be set to can along first male rotor axle
Abutted against to first host shell.
12. according to claim 11 pair of permanent magnetism two-stage screw compressor, it is characterised in that also include：
Anti-rotation pressing plate, the anti-rotation pressing plate abuts setting with the bearing.
13. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that：
Main oil-hole is provided with first host shell.
14. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that also include：
Interpolar cools down oilhole, interpolar cooling oilhole be arranged on the one-level screw host and two grades of screw hosts it
Between.
15. according to claim 1 pair of permanent magnetism two-stage screw compressor, it is characterised in that also include：
Pressure sensor, the pressure sensor is arranged at second host shell, for detecting in second host shell
Interstage pressure；And controller, the controller is electrically connected with the pressure sensor and the one-level permanent magnet frequency conversion motor respectively
Connect, to control one and two grade of permanent magnet frequency conversion motor according to the signal that the pressure sensor is exported.
16. according to claim 15 pair of permanent magnetism two-stage screw compressor, it is characterised in that also include：
Pressure valve, the pressure valve is arranged at first host shell；The pressure valve is set in first main case
Internal gas pressure intensity is opened when increasing to preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492530.3U CN206582112U (en) | 2016-12-31 | 2016-12-31 | Double permanent magnetism two-stage screw compressors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492530.3U CN206582112U (en) | 2016-12-31 | 2016-12-31 | Double permanent magnetism two-stage screw compressors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206582112U true CN206582112U (en) | 2017-10-24 |
Family
ID=60110849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621492530.3U Expired - Fee Related CN206582112U (en) | 2016-12-31 | 2016-12-31 | Double permanent magnetism two-stage screw compressors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206582112U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593867A (en) * | 2016-12-31 | 2017-04-26 | 上海偌托新能源科技有限公司 | Double-permanent-magnet two-level screw compressor |
-
2016
- 2016-12-31 CN CN201621492530.3U patent/CN206582112U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593867A (en) * | 2016-12-31 | 2017-04-26 | 上海偌托新能源科技有限公司 | Double-permanent-magnet two-level screw compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103047134B (en) | A kind of air gap non-oil-immersed type blade pump for hydraulic engine | |
| CA2862513C (en) | Screw compressor | |
| CN107888010A (en) | A kind of motor sealing structure and motor | |
| CN105827066B (en) | The wind oil hybrid cooling system of temperature control motor and controller | |
| CN101086258A (en) | Frequency-variable screw type refrigerating compressor | |
| CN108252956A (en) | A kind of rotor of air foil bearing bearing air compressor machine is from cooling system | |
| CN110374892A (en) | A kind of centrifugal two-stage air compressor of high-speed direct-drive | |
| CN201827074U (en) | Twin-screw air compressor | |
| CN206582112U (en) | Double permanent magnetism two-stage screw compressors | |
| CN106593867A (en) | Double-permanent-magnet two-level screw compressor | |
| CN201246314Y (en) | Direct connecting type high speed centrifugal air blower | |
| CN203488391U (en) | Multistage centrifugal compressor and air conditioning unit | |
| CN206017178U (en) | A kind of quiet centrifugal pump | |
| CN205858671U (en) | The double-machine two-stage screw type compressor that a kind of magneto drives | |
| CN204082559U (en) | Low voltage heavy current porting displaceable electric scroll compressor | |
| CN2427662Y (en) | Energy-saving type integrated hydraulic source | |
| CN206860403U (en) | Compressor and refrigerator constant speed compressor | |
| CN102628435A (en) | Hydraulic power unit including centrifugal pump and vane pump in motor | |
| CN205823966U (en) | A kind of bearing block | |
| CN109519383B (en) | Vertical oil cooling integrated screw compressor and oil cooling method thereof | |
| CN213360422U (en) | High-efficiency energy-saving type two-stage screw air compressor system | |
| CN2594499Y (en) | Low-noise hydrocooling centrifugal pump | |
| CN205309312U (en) | High -speed height of air supporting mills electric main shaft of two unifications of highlight | |
| CN205583906U (en) | Air compressor machine is with directly driving PMSM | |
| CN207283345U (en) | Oil-cooled motor for compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20171231 |