CN207161282U - A kind of inverted Y-shaped oil-free gas compressor - Google Patents
A kind of inverted Y-shaped oil-free gas compressor Download PDFInfo
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- CN207161282U CN207161282U CN201720963145.0U CN201720963145U CN207161282U CN 207161282 U CN207161282 U CN 207161282U CN 201720963145 U CN201720963145 U CN 201720963145U CN 207161282 U CN207161282 U CN 207161282U
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Abstract
The utility model provides a kind of inverted Y-shaped oil-free gas compressor, including eccentric axle box, high-pressure cylinder, low-pressure cylinder, piston, power transmission shaft, eccentric shaft, bearing axle, magnetic couple device；The compressor shares three cylinders, one high-pressure cylinder is distributed in the top of eccentric axle box, and two low-pressure cylinders are distributed in eccentric shaft lower box part both sides, and high-pressure cylinder and low-pressure cylinder use the structure distribution of falling Y-shaped, three cylinders mutually stagger in 120 ° of angles, and do not arrange at grade；The piston is connected by connecting rod with eccentric shaft, and being mutually 120 angles between three pistons staggers；The both ends of the eccentric shaft respectively with power transmission shaft and support axis connection；The magnetic couple device drives power transmission shaft motion.Oil-free gas compressor of the present utility model, using associated mode magnetic coupling transmission, any lubricating oil is not added in eccentric axle box, it is effectively that eccentric axle box, high low pressure cylinder and ambient atmosphere is completely isolated by separation sleeve, it has been truly realized hermetically sealed.
Description
Technical field
Gas compressor technical field is the utility model is related to, in particular to a kind of inverted Y-shaped oil-free gas compression
Machine.
Background technology
It is poisonous, valuable at some, or the place that use environment is harsh, strict to the requirement of machine sealing property, such as use hydrogen
The occasions such as the SF6 gases that gas, helium and transformer station use, a kind of special gas compressor can be applied to.And in prior art
In compressor more using reciprocating, belong to positive displacement compressor, its operation principle is：The gas of a constant volume is set sequentially to inhale
Enter and discharge the compressor that closing space improves static pressure.In compression process, bent axle drivening rod, connecting rod band piston, piston
Move up and down.Piston movement makes the volume in cylinder change, when piston moves downward, volume of cylinder increase,
Intake valve is opened, exhaust valve closure, and gas, which is sucked into, to be come, and completes intake process；When piston upwards, volume of cylinder
Reduce, air outlet valve is opened, and intake valve is closed, and completes compression process.This compressor generally use piston ring come sealing cylinder and
Gap between piston, and carry out lubricating piston-ring using lubricating oil.
Oil-free gas compressor of the prior art is not the oil-free lubrication in absolute sense, and so-called oil-free is in fact
Lubricating oil is not used in cylinder, but lubricating oil is still added with crankcase, is mainly adopted between cylinder and crankcase
Kept apart with sealing device, prevent oil molecule from leaping up in compressed gas, this kind of compressor is by Optimal improvements for many years, shape
Into the design producing method of seriation, maturing, turn into the main product of today's society.This structure can not accomplish 100%
No leakage, oil-free truly can not be accomplished.Because mechanical seal is there is wear problem, when using one
After the section time, just have oil molecule and leap up in compressed gas.Because the power intake of bent axle is dynamic sealing position, it is impossible to is done
To zero sealing, and with the extension of usage time, due to wear reason, leakage rate can be increasing.
It is also more and more stricter to the purity level of compressed gas with technological progress and the raising of living standards of the people.Adopt
There is hydraulic shrinking machine with traditional, it is necessary to subsidiary expensive gas purifying equipment, or even the gas of some high-end application requirements compressions
Among can not oil-containing.Therefore, turn into urgently to be resolved hurrily with regard to developing the compressor for clean, the absolute oil-free of compressed gas of sening as an envoy to as needed
One of technical problem.
Chinese patent CN20091011695806 discloses a kind of full-oil-free lubrication sealing type gas compressor, including bent axle
Case, bent axle, connecting rod, cylinder, piston, base bearing is installed on bent axle power input, there is no lubricating oil, institute in crankcase
It is grease lubrication to have bearing, and piston ring and guide ring are non-metal self-lubricating material manufactures.The prior art uses bent axle band
Dynamic connecting rod makees reciprocating compression, and the side force suffered by cylinder bearing surface is larger, and piston is easy to wear, and exists because bent axle is run
Bent axle flex point, work is unstable, and noise is larger.
The content of the invention
To overcome the technical problems such as poor sealing performance present in prior art, running stability are poor, noise is big, this practicality
It is new to provide a kind of inverted Y-shaped oil-free gas compressor.Using gas compressor of the present utility model, it can reach complete close
Envelope, makes to be entirely free of oil molecule in compressed gas.
The technical solution of the utility model is：
A kind of inverted Y-shaped oil-free gas compressor, it is characterised in that：Including eccentric axle box, high-pressure cylinder, low-pressure cylinder,
Piston, power transmission shaft, eccentric shaft, bearing axle, magnetic couple device；The compressor shares three cylinders, a high-pressure cylinder point
For cloth on the top of eccentric axle box, two low-pressure cylinders are distributed in eccentric shaft lower box part both sides, the high-pressure cylinder and low-pressure cylinder
Using the structure distribution of falling Y-shaped, three cylinders mutually stagger in 120 ° of angles, and do not arrange at grade；The piston leads to
Cross connecting rod with eccentric shaft to be connected, being mutually 120 angles between three pistons staggers；The both ends of the eccentric shaft respectively with power transmission shaft and
Support axis connection；The magnetic couple device drives power transmission shaft motion.Using the compressor volume of the utility model design structure
Smaller, weight is lighter, and practicality is very strong, and application is more extensive.
On this basis, there is no lubricating oil in the eccentric axle box；The entrance of the low-pressure cylinder connects with eccentric axle box,
The outlet of the low-pressure cylinder and the entrance of high-pressure cylinder pass through pipeline connection.
On this basis, lubricant medium is not added between the high-pressure cylinder, low-pressure cylinder and piston, the piston ring is adopted
It is made of the nonmetallic materials of self-lubricating, the nonmetallic materials are using polytetrafluoroethylene (PTFE) as matrix, addition carbon fiber and polyamides
Imines is mixed, and cost is low, rub resistance, and long lifespan is easy to maintenance.
On this basis, the magnetic couple device uses direct-connection type magnetic coupling transmission, includes internal magnetic circuit and external magnetic circuit, institute
State between eccentric axle box and ambient atmosphere by nonmetal isolating sleeve carry out it is hermetically sealed isolate, and the nonmetal isolating sleeve will
The internal magnetic circuit and the external magnetic circuit are kept apart.
On this basis, the nonmetal isolating sleeve is to add the separation sleeve that glass fibre is molded as main material, energy using nylon
Bear the pressure of maximum 0.8Mpa in eccentric axle box, pressure be less than 0.8Mpa occasion, compressor can be directly accessed without
Need additional decompressor.
On this basis, the compression process uses two stages of compression, and two low-pressure cylinder carries out one-level pressure to gas
Contracting, the high-pressure cylinder further carry out two-stage compression to gas.
On this basis, the capacity of the oil-free gas compressor is up to 6-60M3/ h, output pressure is up to 6MPa；
The operating pressure of the low-pressure cylinder entrance can be any value work on -0.05-0.8MPa sections.
On this basis, the gas access connects with eccentric axle box, during compressor operating, entrance and eccentric axle box
Interior gas, it will all enter low pressure compression cylinder in flow process and take away the bearing in eccentric axle box and other transmission mechanisms
Mechanical movement caused by heat, entered from the outlet of low-pressure cylinder in high-pressure cylinder.
On this basis, low-pressure cylinder and the high-pressure cylinder outer wall has the fin of some wing structures.
On this basis, the high-pressure cylinder outer wall has cooling device；The cooling device is to force wind using fan
It is cold.
On this basis, the both ends of the eccentric shaft all have an inertia balance wheel, and by inertia balance wheel respectively with branch
Support axle, transmission axis connection；There is balancing patch adjustment gravitational equilibrium, such balanced structure so that fortune on the inertia balance wheel
Row is very steady, and vibrations are very small, and mechanicalness noise is very low.The low-pressure cylinder and high-pressure cylinder are located at two inertia balance wheels
It is middle；Spacer ring is installed between the eccentric shaft and inertia balance wheel, avoids interfering friction between moving component.
Inverted Y-shaped oil-free compressor provided by the utility model is applicable the pressure for inert gas and non-flammable explosion hazard gases
Contracting, be particularly suitable for use in SF6 gas recycling and processing devices.
Compared with prior art, the beneficial effects of the utility model are：
1) oil-free gas compressor provided by the utility model, using associated mode magnetic coupling transmission, cylinder, eccentric axle box
Do not add any lubricating oil, by separation sleeve effectively by eccentric axle box, all cylinders of high low pressure and ambient atmosphere completely every
From, be truly realized it is hermetically sealed, the problem of leakage in the absence of eccentric axle box power transmission shaft dynamic sealing.In the sealing of nonmetal isolating sleeve
Under effect, even if low-pressure inlet can not enter compressor, the gas for effectively protecting needs to compress in condition of negative pressure, ambient atmos
The purity of body.
2) oil-free gas compressor provided by the utility model, cylinder using Y-shaped structure, between three cylinders with
120 ° of angles stagger, and do not arrange at grade so that three row pistons are made a concerted effort on same eccentric shaft, and equilibrant force has reached
Full balance, therefore operate steadily, muting function is good；And the desirable higher rotating speed of compressor, make using associated mode magnetic coupling into
To be possible, so that compressor efficiency is greatly improved.
3) oil-free gas compressor provided by the utility model, using the design method of two stages of compression, one stage of compression gas
The air inlet of cylinder is connected with eccentric axle box cavity：Flowed by the gas sucked by compressed gas air inlet, take away eccentric axle box
Interior heat, solves eccentric axle box heating problem；Meanwhile when reducing gas compression, the gas pressure of one-level cylinder and eccentric axle box
Difference, required thrust during so as to reduce compressed gas, reduces piston stress, be advantageous to extend transmission mechanism for example piston, piston ring,
Piston pin, the life-span of the part such as piston bearing, output pressure is also greatly improved.
4) oil-free gas compressor provided by the utility model, using eccentric shaft structure, without having as eccentric shaft
Number is turned, therefore the transmission between trunnion, eccentric shaft and connecting rod uses deep-groove ball sealed bearings, assembling is easy, efficiency high.And
And staggered between three pistons with 120 ° of angles, greatly improve tremolo caused by reciprocating motion machinery operation flex point.
5) oil-free gas compressor provided by the utility model, using two stages of compression, inlet pressure can be in -0.05-
Between 0.8Mpa, compression efficiency is improved；Moreover, the design method of this cylinder of two-stage three, cascade EDFA pipe is in cooling fan (wind
Cold type) effect under, be effectively reduced delivery temperature so that compressor displacement can be done arrives 6-60M greatly3/ h, and 6MPa can be reached
Output pressure, save power consumption.
6) oil-free gas compressor provided by the utility model, cylinder piston use the connection side without crosshad shoe
Formula, by two row one stage of compression, a row two-stage compression, compressor compresses efficiency is improved, reduces compressor volume and weight, makes to reach
In the case of certain capacity, minimize compressor, practicality is stronger, and application is more extensive.
7) oil-free gas compressor provided by the utility model, in cylinder using can self-lubricating nonmetallic materials piston
Ring, there is the characteristics of high temperature resistant, wear-resisting, the thermal deformation coefficient of expansion is small so that contacted by compressed gas oil-free, to what is compressed
SF6 GAS QUALITY has high guarantee.
8) oil-free gas compressor provided by the utility model, using direct-connection type magnetic coupling transmission, by it is nonmetallic every
Effectively eccentric axle box is isolated with ambient atmosphere from set, compressor No leakage and powerdriven safeguard protection are ensured, in machine
The secondary passive damage of motor and driving member is not damaged during tool failure, reduces maintenance, maintenance cost.
9) both ends of eccentric shaft of the present utility model all have inertia balance wheel, and the structure of this double stabilizers causes bias
Axle stress balance in rotary course, compressor operating is very steady, and vibrations are very small, and mechanicalness noise is very low.
Brief description of the drawings
Fig. 1 is the cross-sectional view of inverted Y-shaped oil-free gas compressor of the present utility model；
Fig. 2 is the cross section structure schematic diagram of inverted Y-shaped oil-free gas compressor of the present utility model；
Fig. 3 is the operation principle flow chart of the compression process of inverted Y-shaped oil-free gas compressor of the present utility model；
Fig. 4 is the structural representation of the low pressure connecting rod piston component of inverted Y-shaped oil-free gas compressor of the present utility model；
Fig. 5 is the structural representation of the high-pressure connecting rod piston component of inverted Y-shaped oil-free gas compressor of the present utility model；
Reference is as follows in Fig. 1-Fig. 2：
Eccentric axle box 1, counter flange 2, eccentric shaft cover plate 3, low-pressure cylinder 4, high-pressure cylinder 5, the first spacer ring 6, inertia
It is stabilizer 7, eccentric wheel 8, power transmission shaft 9, support shaft 10, separation sleeve geometrical clamp 11, the second spacer ring 12, high pressure cylinder bolt 13, low
Cylinder pressure bonnet bolt 14, fastening bolt 15, connecting rod 16, high pressure piston 17, balancing patch 18, internal magnetic circuit 20, sealed bearings 21, cover plate spiral shell
Bolt 25, straight pin 28, flange seal packing ring 34, flat key 36, trip bolt 37, ventilating joint 38, cylinder seal packing ring 40, high pressure
Valve block 42, high pressure cylinder cap 45, gateway joint 50, temperature sensor joint 52, low pressure valve block 54, low pressure cylinder cap 57, separation sleeve
Seal washer 59, separation sleeve 60, external magnetic circuit 61, motor connection cylinder 62, hole shelves 64.
Reference is as follows in Fig. 4, Fig. 5：Low-pressure piston 405, high pressure piston 505, sealed rolling bearing 66, tension force shell fragment
67th, low-pressure piston ring 68, guide ring 69, high-pressure piston-ring 70.
Embodiment
Below in conjunction with drawings and examples, the utility model is further elaborated.It should be appreciated that this place is retouched
The specific embodiment stated only to explain the utility model, is not used to limit the utility model.
Embodiment 1
As depicted in figs. 1 and 2, a kind of inverted Y-shaped oil-free gas compressor, including eccentric axle box 1, low-pressure cylinder 4, low pressure
Piston 65, high-pressure cylinder 5, high pressure piston 17, connecting rod 16, power transmission shaft 9, support shaft 10, inertia balance wheel 7, eccentric shaft 8, magnetic circuit
Coupling device；Wherein：Eccentric one end of axle box 1 has eccentric shaft cover plate 3, and eccentric shaft cover plate 3 is by cover plate bolt 25 and partially
Mandrel case is fixedly connected, and lock washer is also cased with cover plate bolt 25.High-pressure cylinder 5 is one, is distributed in the upper of eccentric axle box
Portion, low-pressure cylinder 4 are two, are distributed in eccentric shaft lower box part both sides, high-pressure cylinder and low-pressure cylinder using the structure of falling Y-shaped point
Cloth, three cylinders mutually stagger in 120 ° of angles, and do not arrange at grade.Low-pressure piston 65 and high pressure piston 17 pass through company
Bar 16 is connected with eccentric wheel 7, and being also mutually 120 angles between three pistons staggers.Eccentric shaft 8 is located at support shaft 10 and power transmission shaft 9
Between, both ends are attached thereto respectively.The compressor volume of this design structure is smaller, and weight is lighter, and practicality is very strong, using more
Extensively.
Magnetic couple device includes：Internal magnetic circuit 20, separation sleeve 60, external magnetic circuit 61.Internal magnetic circuit 20 is a tubular structure, both ends
Caliber size differs, and more small-bore one end is arranged on power transmission shaft 9, and has corresponding groove on internal diameter and power transmission shaft 9, in groove
Flat key 36 is installed, to facilitate dismounting to be coupled, to transmit torque, in the outer wall compared with small-caliber end, also with some corresponding
Through hole, trip bolt 37 is installed in hole, to fasten coupling for internal magnetic circuit 20 and power transmission shaft 9.Separation sleeve 60 is non-metallic material
Material is made, and separation sleeve 60 is a peviform structure, has the flanging to stretch out in the edge of bore, at flanging there is separation sleeve to consolidate
Clamp 11, to fixed separation sleeve 60；Carried out between the port of separation sleeve 60 and counter flange 2 by separation sleeve seal washer 59
Seal, also there are some fastening bolts at flanging, to be fixedly connected with isolation 60 and counter flange 2.
Also there is motor connection cylinder 62 outside flux coupled device.
In the present embodiment, in order to ensure oil-free in compressor, lubricating oil is not added in eccentric axle box.
Compression process uses two stages of compression, and two low-pressure cylinders carry out one stage of compression to gas, and high-pressure cylinder is further right
Gas carries out two-stage compression；Its operation principle is as shown in Figure 3：The entrance of low-pressure cylinder connects with eccentric axle box 1, and outlet passes through pipe
Road connects with the entrance of high-pressure cylinder.Compressed in into the gas bias axle box of low-pressure cylinder, then by low-pressure cylinder
Outlet is entered in high-pressure cylinder by outer pipeline, so completes one stage of compression.The inner chamber of high-pressure cylinder is divided into diameter difference
Two sections of parts form, the diameter close to one section of inner chamber of piston is more than the diameter of another section of inner chamber, after one stage of compression
Gas is introduced into high-pressure cylinder, is passed through after carry out two-stage compression in external equipment.Between the two sections of high-pressure cylinder
Sealed by rounded washers, there is high pressure valve block 42 and elastic washer, high pressure cylinder between high pressure cylinder cap 45 and high-pressure cylinder 5
It is fixedly connected between lid 45 and high-pressure cylinder 5 by high pressure cylinder bolt 13.
Low-pressure cylinder 4 is not segmented, and is overall one section.There is the He of low pressure valve block 54 between low pressure cylinder cap 57 and low-pressure cylinder 4
Elastic washer, it is fixedly connected between low pressure cylinder cap 57 and low-pressure cylinder 4 by low pressure cylinder bolt 14.The He of low-pressure cylinder 4
The outer wall of high-pressure cylinder 5 also has fin.
In eccentric axle box 1, the both ends of eccentric shaft 8 are provided with two inertia balance wheels 7, the lateral surface of inertia eccentric wheel 7
With circular cavity, the circular cavity of left end inertia eccentric wheel 7, which embeds, is cased with support shaft 10, in the circular cavity of right-hand member inertia eccentric wheel 7
It is nested with power transmission shaft 9；Low-pressure cylinder 4 and high-pressure cylinder 5 are inclined positioned at the centre of two inertia balance wheels 7, the position of eccentric shaft 8
From the center of circle of inertia balance wheel, the side away from eccentric shaft 8 is also equipped with balancing patch 18 on inertia balance wheel 7, and two inertia are put down
Respectively there is one on weighing apparatus wheel 7, and be fixedly connected by dormant bolt with inertia balance wheel 7.Eccentric shaft 8 and inertia balance wheel 7 it
Between there is spacer ring, left and right each one, respectively the first spacer ring 6 and the second spacer ring 12, wherein the first spacer ring 6 is close to support shaft 10,
Two spacer rings 12 are close to power transmission shaft 9.The design structure of this double stabilizers so that compressor operating is very steady, and vibrations are very small,
Mechanicalness noise is very low.Spacer ring between eccentric shaft and inertia balance wheel, it can effectively avoid interfering between moving component
Friction.
Between the both ends of the surface and inertia balance wheel 7 of eccentric shaft 8, between the end face of support shaft 10 and inertia balance wheel 7, transmission
Between the end face of axle 9 and inertia balance wheel 7, it is fixed by straight pin 28；The end face of separation sleeve 60 and counter flange 2 it
Between be fixedly connected also by straight pin 28.The end face center position of support shaft 10 also has fastening bolt 15 and locking pad
Piece, support shaft 10 and eccentric shaft 8 are linked together.Also by fastening bolt and prevent in the bottom of the circular cavity of inertia balance wheel 7
It is fixedly connected by loose pad with eccentric shaft.
Between eccentric axle box 1 and eccentric shaft cover plate 3, between eccentric axle box 1 and counter flange 2, flange seal is installed
Packing ring 34 is sealed.In high and low pressure cylinder and the eccentric junction of axle box 1, sealed by cylinder seal packing ring 40.
Sealed bearings 21 are installed between eccentric shaft cover plate 3 and support shaft 10, between sealing flange 2 and power transmission shaft 9；Respectively
Between piston rod 16 and eccentric shaft 8, it is attached by sealed bearings 21.The sealed bearings 21 can be deep groove ball bearing.
Gateway joint 50 is fitted with high and low pressure cylinder, each cylinder there are two, and left and right each one, three cylinders are total to
There are 6.Also there is ventilating joint 38 and temperature sensor joint 52 on high-pressure cylinder.
Oil-free gas compressor provided by the utility model, using associated mode magnetic coupling transmission, cylinder, eccentric axle box are not
Any lubricating oil is added, it is effectively that eccentric axle box, all cylinders of high low pressure and ambient atmosphere is completely isolated by separation sleeve,
Be truly realized it is hermetically sealed, the problem of leakage in the absence of eccentric axle box power transmission shaft dynamic sealing.Make in the sealing of nonmetal isolating sleeve
Under, even in condition of negative pressure, ambient atmos can not enter compressor, effectively protect the purity for the gas that needs compress.
Oil-free gas compressor provided by the utility model, cylinder using Y-shaped structure, between three cylinders with
120 ° of angles stagger, and do not arrange at grade so that three row pistons are made a concerted effort on same eccentric shaft, and equilibrant force has reached
Full balance, therefore operate steadily, muting function is good；And the desirable higher rotating speed of compressor, make using associated mode magnetic coupling into
To be possible, so that compressor efficiency is greatly improved.
Oil-free gas compressor provided by the utility model, using eccentric shaft structure, without being turned as eccentric shaft
Number, therefore the transmission between trunnion, eccentric shaft and connecting rod uses deep-groove ball sealed bearings, assembling is easy, efficiency high.Moreover,
Staggered between three pistons with 120 ° of angles, greatly improve tremolo caused by reciprocating motion machinery operation flex point.
Embodiment 2
As depicted in figs. 1 and 2, a kind of inverted Y-shaped oil-free gas compressor, including eccentric axle box 1, low-pressure cylinder 4, low pressure
Piston 65, high-pressure cylinder 5, high pressure piston 17, connecting rod 16, power transmission shaft 9, support shaft 10, inertia balance wheel 7, eccentric shaft 8, magnetic circuit
Coupling device；Wherein：Eccentric one end of axle box 1 has eccentric shaft cover plate 3, and eccentric shaft cover plate 3 is by cover plate bolt 25 and partially
Mandrel case is fixedly connected, and lock washer is also cased with cover plate bolt 25.High-pressure cylinder 5 is one, is distributed in the upper of eccentric axle box
Portion, low-pressure cylinder 4 are two, are distributed in eccentric shaft lower box part both sides, high-pressure cylinder and low-pressure cylinder using the structure of falling Y-shaped point
Cloth, three cylinders mutually stagger in 120 ° of angles, and do not arrange at grade.Low-pressure piston 65 and high pressure piston 17 pass through company
Bar 16 is connected with eccentric wheel 7, and being also mutually 120 angles between three pistons staggers.Eccentric shaft 8 is located at support shaft 10 and power transmission shaft 9
Between, both ends are attached thereto respectively.The both ends of eccentric shaft 8 have an inertia balance wheel 7, and by inertia balance wheel 7 respectively with branch
Support axle 10, power transmission shaft 9 connect；There is balancing patch 18, low-pressure cylinder 4 and high-pressure cylinder 5, which are located at two inertia, puts down on inertia balance wheel 7
The centre of weighing apparatus wheel 7；Spacer ring is installed between eccentric shaft 8 and inertia balance wheel 7.
As shown in figure 4, the connecting rod piston component of low-pressure cylinder, one end connection sealed bearings 21 of connecting rod 16, the other end connect
Low-pressure piston 405 is connected to, there is neutral 64 between sealed bearings 21 and the chamber of connection, lead between low-pressure piston 405 and connecting rod 16
Cross sealing rolling bearing 66 to connect, the nested tensioned shell fragment 67 of piston outer wall, low-pressure piston ring 68, guide ring 69.The seal shaft
It is deep groove ball bearing to hold 21, and sealed rolling bearing 66 is needle bearing.
As shown in figure 5, the connecting rod piston component of high-pressure cylinder, one end connection sealed bearings 21 of connecting rod 16, the other end connect
High pressure piston 505 is connected to, there is neutral 64 between sealed bearings 21 and the chamber of connection, lead between high pressure piston 505 and connecting rod 16
Cross sealing rolling bearing 66 to connect, the nested tensioned shell fragment 67 of piston outer wall, low-pressure piston ring 68, guide ring 69.With low pressure gas
The difference of cylinder is that high pressure piston 505 outwards also has one section of extension, has high-pressure piston-ring 70 on extension..Should
Sealed bearings 21 are deep groove ball bearing, and sealed rolling bearing 66 is needle bearing.
Use the structure design without crosshad shoe between piston and connecting rod, it is simple in construction, compact, machine height is relatively low,
Lighter in weight, typically it is not required to special lubricating structure.
Lubricant medium is not added between high-pressure cylinder, low-pressure cylinder and piston, piston ring uses the non-metallic material of self-lubricating
Material is made, and the nonmetallic materials are mixed by matrix, addition carbon fiber and polyimides of polytetrafluoroethylene (PTFE).Cost is low,
Rub resistance, long lifespan are easy to maintenance
Magnetic couple device uses direct-connection type magnetic coupling transmission, and comprising internal magnetic circuit and external magnetic circuit, eccentric axle box and the external world are big
Hermetically sealed isolation is carried out by nonmetal isolating sleeve between gas, and the nonmetal isolating sleeve is by the internal magnetic circuit and described outer
Magnetic path isolation comes.Nonmetal isolating sleeve is to add the separation sleeve that glass fibre is molded as main material using nylon, can bear eccentric shaft
Maximum 0.8Mpa pressure in case, it is less than 0.8Mpa occasion in pressure, compressor can be directly accessed without outer plus-minus
Pressure device.
Oil-free gas compressor provided by the utility model, low-pressure cylinder entrance can bear maximum 0.8Mpa pressure
Operating pressure, the discharge capacity of high-pressure cylinder is 6-60M3/ h, output pressure is up to 6MPa.Gas access is to connect with eccentric axle box
, during compressor operating, the gas in entrance and eccentric axle box, low pressure compression cylinder will be all entered in flow process and be taken away
Bearing in eccentric axle box and heat caused by the mechanical movement of other transmission mechanisms, height is entered from the outlet of low-pressure cylinder
In air cylinder.
For further increase cooling effect, on this basis, low-pressure cylinder and the high-pressure cylinder outer wall has some wings
The fin of type structure.High-pressure cylinder outer wall has cooling device；The cooling device is using fan air blast cooling.
With reference to the operation principle of figure 3, Y types oil-free gas compressor provided by the utility model, structure is novel, and operation is flat
Surely.It is that three connecting rods on set, three row cylinders are mutually what 120 ° of angles were formed in space side by side on an eccentric shaft, it
It can regard as two cylinders rotation, 60 ° of formation on W type gas compressors both sides.The transmission of this compressor is passed using associated mode
It is dynamic, it is to be driven by Magnetic Pole Coupling, by non-contact transmission, under the buffer action of nonmetal isolating sleeve, in the absence of biography
The dynamic sealing of power transmission shaft, makes eccentric axle box be under whole sealing status and works, effectively prevent pressure used by system shaft coupling
The leakage of contracting gas.
By taking Fig. 2 and figure three as an example, operation principle of the present utility model is expanded on further, it is outer when what is be connected with motor rotation axis
When magnetic circuit 61 rotates, due to magnetic circuit relation, magnetic force drives internal magnetic circuit 20 to rotate through separation sleeve, and internal magnetic circuit 20 drives eccentric axle box
Power transmission shaft 9 rotates, and power transmission shaft 9 drives eccentric shaft 8 and rotated around the center of circle of power transmission shaft 9.And because the row low-pressure cylinder of one-level 2,
The connecting rod of the row high-pressure cylinder of two level 1 is enclosed on same eccentric shaft and the 120 ° of angles that offset one from another, so 3 row of one-level, two level are lived
Plug within each cycle turnover that eccentric axle box power transmission shaft 9 is rotated, the reciprocating motion that each row piston is carried out successively once,
Moved back and forth by 2 row cylinder pistons of one-level and be compressed to gas in the cascade EDFA pipe of one-level and two level by low pressure valve block,
By the air-cooled effect of cooling fan, then suck after second piston moves back and forth compression and cold by two level in second piston cylinder
But output high-pressure gas after pipe cooling.
Because eccentric axle box is not injected into any lubricating oil, so whole compression process is oil-free.Eccentric axle box level
Three row cylinders are in completely isolated state with ambient atmosphere, so the external leakage problem of gas is not present.
Oil-free gas compressor provided by the utility model, it is applicable the pressure for inert gas and non-flammable explosion hazard gases
Contracting, be particularly suitable for use in SF6 gas recycling and processing devices.
Oil-free gas compressor provided by the utility model, using the design method of two stages of compression, one stage of compression cylinder
Air inlet be connected with eccentric axle box cavity：Flowed, taken away in eccentric axle box by the gas sucked by compressed gas air inlet
Heat, solve eccentric axle box heating problem；Meanwhile when reducing gas compression, the gas differential pressure of one-level cylinder and eccentric axle box,
Required thrust during so as to reduce compressed gas, reduce piston stress, be advantageous to extend transmission mechanism such as piston, piston ring, work
The life-span of the parts such as plug pin, piston pin, piston bearing, it is ensured that under conditions of oil-free lubrication, greatly extend the compressor longevity
Life.
Oil-free gas compressor provided by the utility model, using two stages of compression, inlet pressure can be in 0-0.8Mpa
Between, improve compression efficiency；Moreover, the design method of this cylinder of two-stage three, cascade EDFA pipe is cooling fan (air-cooled)
Under effect, delivery temperature is effectively reduced so that compressor displacement can be done arrives 6-60M greatly3/ h, and 6MPa output can be reached
Pressure, save power consumption.
Oil-free gas compressor provided by the utility model, cylinder piston use the connected mode without crosshad shoe,
By two row one stage of compression, a row two-stage compression, compressor compresses efficiency is improved, reduces compressor volume and weight, makes to reach one
In the case of determining capacity, minimize compressor.
Oil-free gas compressor provided by the utility model, in cylinder using can self-lubricating nonmetallic materials piston
Ring, there is the characteristics of high temperature resistant, wear-resisting, the thermal deformation coefficient of expansion is small so that contacted by compressed gas oil-free, to what is compressed
SF6 GAS QUALITY has high guarantee.
Preferred embodiment of the present utility model has shown and described in described above, as previously described, it should be understood that this practicality is new
Type is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and available for various other groups
Conjunction, modification and environment, and above-mentioned teaching or the technology of association area can be passed through in utility model contemplated scope described herein
Or knowledge is modified.And the change and change that those skilled in the art are carried out do not depart from spirit and scope of the present utility model, then
All should be in the protection domain of the appended claims for the utility model.
Claims (10)
- A kind of 1. inverted Y-shaped oil-free gas compressor, it is characterised in that：Including eccentric axle box, high-pressure cylinder, low-pressure cylinder, work Plug, power transmission shaft, eccentric shaft, bearing axle, magnetic couple device；There is no lubricating oil in the eccentric axle box；The compressor shares Three cylinders, a high-pressure cylinder are distributed in the top of eccentric axle box, and two low-pressure cylinders are distributed in eccentric shaft lower box part both sides, The high-pressure cylinder and low-pressure cylinder use the structure distribution of falling Y-shaped, and three cylinders mutually stagger in 120 ° of angles, and not same Arranged on planes；The piston is connected by connecting rod with eccentric shaft, and being mutually 120 angles between three pistons staggers；The bias The both ends of axle respectively with power transmission shaft and support axis connection；The magnetic couple device drives power transmission shaft motion.
- 2. inverted Y-shaped oil-free gas compressor according to claim 1, it is characterised in that：The entrance of the low-pressure cylinder Connected with eccentric axle box, the outlet of the low-pressure cylinder and the entrance of high-pressure cylinder pass through pipeline connection.
- 3. inverted Y-shaped oil-free gas compressor according to claim 1, it is characterised in that：The high and low pressure cylinder and work Do not add lubricant medium between plug, the piston ring is made of the nonmetallic materials of self-lubricating, the nonmetallic materials be with Polytetrafluoroethylene (PTFE) is that matrix, addition carbon fiber and polyimides are mixed.
- 4. inverted Y-shaped oil-free gas compressor according to claim 1, it is characterised in that：The magnetic couple device is adopted With direct-connection type magnetic coupling transmission, internal magnetic circuit and external magnetic circuit are included；Between the eccentric axle box and ambient atmosphere by it is nonmetallic every Hermetically sealed isolation is carried out from set, and the nonmetal isolating sleeve keeps apart the internal magnetic circuit and the external magnetic circuit.
- 5. inverted Y-shaped oil-free gas compressor according to claim 4, it is characterised in that：The nonmetal isolating sleeve is The separation sleeve being molded using nylon plus glass fibre as main material.
- 6. inverted Y-shaped oil-free gas compressor according to claim 1, it is characterised in that：The compression process uses two Level compression, two low-pressure cylinder carry out one stage of compression to gas, and the high-pressure cylinder further carries out two level pressure to gas Contracting.
- 7. inverted Y-shaped oil-free gas compressor according to claim 6, it is characterised in that：The low-pressure cylinder entrance Operating pressure is -0.05-0.8MPa；The discharge capacity of the compressor is 6-60M3/ h, output pressure is up to 6MPa.
- 8. inverted Y-shaped oil-free gas compressor according to claim 2, it is characterised in that：The entrance of the low-pressure cylinder Connected with eccentric axle box, when gas enters low-pressure cylinder, the gas in eccentric axle box also enters low-pressure cylinder, and is flowed in gas During take away bearing and other parts mechanical movements in eccentric axle box caused by heat, pass through the outlet of low-pressure cylinder Enter in high-pressure cylinder；The high and low pressure cylinder outer wall has cooling device.
- 9. inverted Y-shaped oil-free gas compressor according to claim 1, it is characterised in that：The both ends tool of the eccentric shaft Have an inertia balance wheel, the eccentric shaft by inertia balance wheel respectively with support shaft, transmission axis connection；On the inertia balance wheel With balancing patch, the low-pressure cylinder and high-pressure cylinder are located at the centre of two inertia balance wheels；The eccentric shaft and inertia balance Spacer ring is installed between wheel.
- 10. the inverted Y-shaped oil-free gas compressor according to claim any one of 1-9, it is characterised in that：Will the Y Type oil-free compressor is used for SF6 gas recycling and processing devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963145.0U CN207161282U (en) | 2017-08-03 | 2017-08-03 | A kind of inverted Y-shaped oil-free gas compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963145.0U CN207161282U (en) | 2017-08-03 | 2017-08-03 | A kind of inverted Y-shaped oil-free gas compressor |
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| Publication Number | Publication Date |
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| CN207161282U true CN207161282U (en) | 2018-03-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237730A (en) * | 2017-08-03 | 2017-10-10 | 南通虹登机械设备有限公司 | A kind of inverted Y-shaped oil-free gas compressor |
| CN109372720A (en) * | 2018-12-19 | 2019-02-22 | 李小冬 | Piston type pneumatic motor vacuum pump |
-
2017
- 2017-08-03 CN CN201720963145.0U patent/CN207161282U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237730A (en) * | 2017-08-03 | 2017-10-10 | 南通虹登机械设备有限公司 | A kind of inverted Y-shaped oil-free gas compressor |
| CN109372720A (en) * | 2018-12-19 | 2019-02-22 | 李小冬 | Piston type pneumatic motor vacuum pump |
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