CN109488598A - Sealing structure and balanced seal structure applied to helical-lobe compressor - Google Patents
Sealing structure and balanced seal structure applied to helical-lobe compressor Download PDFInfo
- Publication number
- CN109488598A CN109488598A CN201811631638.XA CN201811631638A CN109488598A CN 109488598 A CN109488598 A CN 109488598A CN 201811631638 A CN201811631638 A CN 201811631638A CN 109488598 A CN109488598 A CN 109488598A
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- Prior art keywords
- sealing
- helical
- lobe compressor
- sealing shroud
- axle journal
- 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.)
- Pending
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- 238000007789 sealing Methods 0.000 title claims abstract description 136
- 238000012856 packing Methods 0.000 claims description 30
- 230000008676 import Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000006978 adaptation Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 12
- 239000010687 lubricating oil Substances 0.000 description 10
- 210000004907 gland Anatomy 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003305 oil spill Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
- F04C27/009—Shaft sealings specially adapted for pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Sealing structure provided by the invention applied to helical-lobe compressor, an axle journal of the rotor including helical-lobe compressor, the sealing shroud and circular channel being sheathed on axle journal；The axle journal runs through the circular channel；The sealing shroud is cylindrical；The sealing shroud is located in the circular channel；Wherein, the surface of the sealing shroud is provided with several annular ribs around the sealing shroud；The annular rib and the circular channel clearance seal；Alternatively, the surface of the sealing shroud is provided with the thread protrusion around the sealing shroud；The thread protrusion and the circular channel clearance seal.The invention is designed by simple structure, effectively prevents sealing structure complex process in the prior art, high production cost, bulky problem, and production cost is low, occupancy is small in size, extremely adaptation lightweight, portability application scenarios.
Description
Technical field
The present invention relates to helical-lobe compressor field more particularly to a kind of sealing structures and balance applied to helical-lobe compressor
Sealing structure.
Background technique
For the normal work for guaranteeing helical-lobe compressor, leakage of compressed gas is avoided, it is general using mechanical close in the prior art
Envelope or the mode of air seal are sealed.It is related to more complicated technology using mechanical seal or air seal, it is raw
Produce at high cost, and the volume of sealing structure is often larger, is not easy to the lightweight of helical-lobe compressor, the development of portability.
Summary of the invention
In view of the above problems, a kind of sealing structure and balance applied to helical-lobe compressor provided by the invention is close
Seal structure, to solve to utilize complex process existing for mechanical seal or air seal, high production cost, sealing knot in the prior art
The bulky problem of structure realizes that a kind of structure is simple, production cost is low, small in size, high-revolving helical-lobe compressor, promotes screw rod
Lightweight, the portability application of compressor.
To achieve the above object, the technical scheme adopted by the invention is as follows:
Sealing structure provided by the invention applied to helical-lobe compressor, an axis of the rotor including helical-lobe compressor
Neck, the sealing shroud and circular channel being sheathed on axle journal；The axle journal runs through the circular channel；The sealing shroud is in cylinder
Shape；The sealing shroud is located in the circular channel；
Wherein, the surface of the sealing shroud is provided with several annular ribs around the sealing shroud；The annular rib
With the circular channel clearance seal；
Alternatively, the surface of the sealing shroud is provided with the thread protrusion around the sealing shroud；The thread protrusion and institute
State circular channel clearance seal.
Sealing structure provided by the invention applied to helical-lobe compressor, it is preferable that including around axle journal setting
Lip-type packing；The lip-type packing and the axle journal are interference fitted；The axle journal close to helical-lobe compressor rotor one
End is proximal end, and one end of the rotor far from helical-lobe compressor is distal end；The lip-type packing is remote relative to the circular channel
Proximal end from the axle journal.
Sealing structure provided by the invention applied to helical-lobe compressor, it is preferable that be arranged with axle sleeve on the axle journal；Institute
It states axle sleeve to be set between the axle journal and the lip-type packing, separates the axle journal and the lip-type packing；The lip
Shape sealing ring and the axle sleeve are interference fitted；The axle journal and the axle sleeve are interference fitted.
Sealing structure provided by the invention applied to helical-lobe compressor, it is preferable that between several annular ribs are uniform
It is identical every setting, size；
Or the thread protrusion uniform intervals setting.
Sealing structure provided by the invention applied to helical-lobe compressor, it is preferable that the sealing shroud and the axle journal mistake
It is full of cooperation.
Sealing structure provided by the invention applied to helical-lobe compressor, it is preferable that the outer surface of the axle sleeve with it is described
The highest point of the outer surface of sealing shroud flushes；The axle sleeve is close to the sealing shroud setting.
Sealing structure provided by the invention applied to helical-lobe compressor, it is preferable that the sealing shroud surface is provided that
The annular rib；Several annular ribs are evenly distributed on the whole surface of the sealing shroud；The length of the sealing shroud
It is identical as the length of the circular channel；
Sealing structure provided by the invention applied to helical-lobe compressor, it is preferable that further include being connected to ambient atmosphere
Oil discharge passage；The import of the oil discharge passage is set between the circular channel and the lip-type packing；It is described fuel-displaced logical
The outlet in road is connected to ambient atmosphere.
Balanced seal structure provided by the invention applied to helical-lobe compressor, including in two claims 1~8 arbitrarily
Balance channel described in one applied to the sealing structure of helical-lobe compressor and for self-balancing；Two sealing structure axis
Neck is located at same application in the opposite side of the rotor of helical-lobe compressor；Two sealing structures be respectively the first sealing structure and
Second seals structure；One oral area of the balance channel is the first oral area, another oral area is the second oral area；The first
Portion is opened on the circular channel wall of first sealing structure；Second oral area is opened in the circle of the second seals structure
On shape conduit wall；Gap between the sealing shroud and the circular channel of first sealing structure is the first gap；Institute
Stating the gap between the sealing shroud of second seals structure and the circular channel is the second gap；The balance channel connection
First gap and second gap.
The technical scheme has the following advantages or beneficial effects:
Sealing structure provided by the invention applied to helical-lobe compressor, an axis of the rotor including helical-lobe compressor
Neck, the sealing shroud and circular channel being sheathed on axle journal；The axle journal runs through the circular channel；The sealing shroud is in cylinder
Shape；The sealing shroud is located in the circular channel；Wherein, the surface of the sealing shroud is provided with several around the sealing shroud
Annular rib；The annular rib and the circular channel clearance seal；Alternatively, the surface of the sealing shroud be provided with it is circular
The thread protrusion of the sealing shroud；The thread protrusion and the circular channel clearance seal.The invention passes through simple structure
Design effectively prevents sealing structure complex process in the prior art, high production cost, bulky problem, production cost
It is low, occupy it is small in size, extremely adaptation lightweight, portability application scenarios.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, the present invention and its feature, outer
Shape and advantage will become more apparent.Identical label indicates identical part in all the attached drawings.Not deliberately according to than
Example draws attached drawing, it is preferred that emphasis is shows the gist of the present invention.
Fig. 1 is the cross-sectional view at a visual angle of the sealing structure applied to helical-lobe compressor that the embodiment of the present invention 1 provides；
Fig. 2 is the section view at another visual angle of the sealing structure applied to helical-lobe compressor that the embodiment of the present invention 1 provides
Figure；
Fig. 3 is the top view for the helical-lobe compressor that the embodiment of the present invention 1 provides；
Fig. 4 is the bottom view that the present invention implements the helical-lobe compressor that Lee 1 provides；
Fig. 5 is the partial structure diagram for the sealing structure applied to helical-lobe compressor that the embodiment of the present invention 1 provides；
Fig. 6 is the schematic diagram for the sealing shroud applied to helical-lobe compressor that the embodiment of the present invention 1 provides.
Specific embodiment
The present invention is further illustrated with specific embodiment with reference to the accompanying drawing, but not as limit of the invention
It is fixed.
Embodiment 1:
As shown in figs. 1 to 6, a kind of sealing structure applied to helical-lobe compressor that the embodiment of the present invention 1 provides, including spiral shell
One axle journal 11 of the rotor of bar compressor, the sealing shroud 12 and circular channel 13 being sheathed on axle journal 11；Axle journal 11 is through circle
Shape channel 13；Sealing shroud 12 is cylindrical；Sealing shroud 12 is located in circular channel 23；Wherein, the surface of sealing shroud 12 is provided with
Several annular ribs 121 around sealing shroud；Annular rib 121 and 13 clearance seal of circular channel.
A kind of sealing structure applied to helical-lobe compressor that the embodiment of the present invention 1 provides is being particularly applicable in such as Fig. 1~4
Shown in helical-lobe compressor when, helical-lobe compressor includes at least the cavity 0 of package rotor, circular channel 13 and the closed company of cavity 0
Logical, circular channel 13 is mainly used for providing the channel that the axle journal 11 of rotor stretches out at this time；The air inlet 101 of helical-lobe compressor,
Gas outlet 102 is connected to cavity 0.
Female rotor and male rotor high speed rotation, intermeshing in cavity 0 generate high pressure gas, are formed in cavity 0 very big
Pressure, the gas of high pressure is discharged through the gas outlet of helical-lobe compressor, but since rotor can not be fully sealed with the external world
Isolation, causes the high pressure gas in cavity 0 that can overflow by the gap between circular channel 13 and axle journal 11；To prevent high pressure gas
Body overflows, by being provided with the sealing shroud and 13 clearance seal of circular channel of annular rib 121, adjacent annular rib 121
Between form annular recess；The gas of high pressure is through the gap between annular rib 121 and circular channel 13, then through annular recess,
It moves in circles, plays the role of throttling to high pressure gas, the high pressure gas for finally overflowing circular channel 13 restores normal substantially
Pressure, although can not be fully sealed, can guarantee the gas overflowed to play sealing effect by clearance seal
It is less, reach seal request, and the gas pressure overflowed is essentially normal pressure, not will cause undesirable consequence；It is rotated in rotor
During, sealing shroud 12 may be sheathed on axle journal by the inner wall abrasion of circular channel 13 so using sealing shroud 12
Structure setting, the sealing shroud 12 for being convenient for changing abrasion maintains original leakproofness, and without replacing other structures, the present invention is real
The novel screw compressor for applying the offer of example 1 is designed by simple structure, effectively prevents sealing structure work in the prior art
Skill complexity, high production cost, bulky problem, production cost is low, occupancy is small in size, extremely adaptation lightweight, portability
Application scenarios；
It should be noted that the annular rib 121 being set on sealing shroud 12 can also use thread protrusion, can equally rise
To identical effect.
The end of axle journal is provided with bearing 01, and bearing 01 is set in bearing bore 02, and bearing bore 02 passes through logical with circle
The closed connection in road 13；In the course of work of helical-lobe compressor, bearing 01 generates high temperature, so that the lubricating oil on bearing 01 steams
The lubricating oil of hair, evaporation may enter in cavity 0, so that being mixed into steam oil in the high pressure gas of compression, pollution is answered
With the other equipment of scene, adverse effect is caused；In order to avoid the lubricating oil of evaporation enters in cavity 0, it is preferable that further include ring
Around the lip-type packing 2 of axle journal setting；Lip-type packing 2 and axle journal 11 are interference fitted；Axle journal 11 is close to helical-lobe compressor
Rotor one end be proximal end, far from helical-lobe compressor rotor one end be distal end；Lip-type packing 2 is relative to circular channel
13 proximal ends far from axle journal 11；Lip-type packing 2 is set in bearing bore 02, and surrounding resists the inner wall of bearing bore 02；By setting
Lip-type packing 2 is set, the lubricating oil of evaporation is sealed in bearing bore 02 by lip-type packing 2, to avoid lubricating oil through circle
The case where entrance cavity 0 of channel 13, occurs；Simultaneously as constantly have the gas overflowing of Low Speed Normal Pressure in circular channel 13, even if
There is lubricating oil to overflow out of lip-type packing 2, also by the gas-insulated outside circular channel of Low Speed Normal Pressure, the gas of Low Speed Normal Pressure
One of sealing gland is formed, the lubricating oil of evaporation is avoided to enter cavity 0.
More specifically, being arranged with axle sleeve 3 on axle journal 11；Axle sleeve 3 is set between axle journal 11 and lip-type packing 2, is separated
Axle journal 11 and lip-type packing 2；Lip-type packing 2 and axle sleeve 3 are interference fitted；Axle journal 11 and axle sleeve 3 are interference fitted.Due to lip
Shape sealing ring 2 needs to carry out interference seal with axle journal 11, and lip-type packing 2 can be contacted with axle journal 11, and axle journal is high-speed rotating
It may be worn in the process by lip-type packing 2, so axle sleeve 3 is provided between lip-type packing 2 and axle journal 11, even if axis
Set 3 is worn, and only needs to change the oil sealing effect that axle sleeve 3 can remain original, has saved cost
More specifically, several 121 uniform intervals of annular rib are arranged, size is identical.
More specifically, sealing shroud 12 and axle journal 11 are interference fitted.It is interference fitted between sealing shroud 12 and axle journal 11, prevents height
Body of calming the anger overflows in gap that may be present between sealing shroud 12 and axle journal 11.
More specifically, the outer surface of axle sleeve 3 is flushed with the highest point of the outer surface of sealing shroud 12；Axle sleeve 3 is close to sealing shroud
12 settings.The gas overflowed from sealing shroud 12 and circular channel 13 reaches the friendship of lip-type packing 2 Yu axle sleeve 3 along axle sleeve 3
At boundary, the oil vapour leaked from lip-type packing 2 is timely taken away.
More specifically, several annular ribs 121 are evenly distributed on the whole surface of sealing shroud 12；The length of sealing shroud 12 with
The length of circular channel 13 is identical.It is identical as circular channel 13 by being arranged the length of sealing shroud 12, and throughout ring-type
The length at the position of burr 121 is identical as circular channel 13, so that evaporation is oily when by circular channel 13, it being capable of duration
, the continual high pressure gas to spilling slow down, preferably form clearance seal.
The small part oil overflowed from lip-type packing 2, the sealing gland isolation being formed is outside；In order to avoid lubricating oil is in bearing
It is accumulated between chamber 02 and circular channel 13, it is preferable that further include the oil discharge passage 4 being connected to ambient atmosphere；Oil discharge passage 4 into
Mouth is set between circular channel 13 and lip-type packing 2；The outlet of oil discharge passage 4 is connected to ambient atmosphere.Completely cut off by sealing gland
Lubricating oil outside is directly taken away by the gas of sealing gland, is discharged through oil discharge passage 4；It simultaneously can be according to the oral area of oil discharge passage 4
Outlet, fuel-displaced situation judge inner sealing situation, convenient timely maintenance.
The above-mentioned sealing structure applied to helical-lobe compressor is mainly used in the axis close to helical-lobe compressor outlet port
On neck, no setting is required the sealing of the inlet port of general helical-lobe compressor, but in order to alleviate outlet port axle journal clearance seal
Pressure at expulsion and prevent the oil vapour in the bearing of inlet port from entering in cavity 0, the embodiment of the present invention 1 provides a kind of application
In the balanced seal structure of helical-lobe compressor, the sealing structure applied to helical-lobe compressor that the embodiment of the present invention 1 is provided point
It is not applied to the both ends of female rotor, male rotor, i.e. two sealing structure axle journals are located at the unified rotor for being applied to helical-lobe compressor
The opposite side of (including female rotor and male rotor)；
Two sealing structures being arranged on same rotor are respectively the first sealing structure and second seals structure；It sets simultaneously
The balance channel 5 of connection the first sealing structure and second seals structure is set, an oral area of balance channel 5 is the first oral area, separately
One oral area is the second oral area；First oral area is opened on the circular channel wall 13 of the first sealing structure；Second oral area is opened in
On the circular channel wall of second seals structure；Between gap between the sealing shroud and circular channel of first sealing structure is first
Gap；Gap between the sealing shroud and circular channel of second seals structure is the second gap；Balance channel 5 be connected to the first gap with
Second gap.First sealing structure is located at the outlet port of helical-lobe compressor, second seals structure be located at helical-lobe compressor into
Port end；It is close that balance channel 5 can will be circulated to second by the high pressure gas part centainly to throttle in first sealing structure
In seal structure, so that a part of gas is flowed into cavity 0 by the circular channel 13 of second seals structure, another part gas warp
The gap between circular channel 13 and sealing shroud 5 is crossed, throttling discharge forms sealing gland, avoids the oil spill from lip-type packing
Steam enters in cavity 0.By the way that balance channel 5 is arranged, on the one hand alleviate pressure at expulsion, another aspect portion gas can be back to
Rotor chamber, while can be similarly formed sealing gland in low-pressure end prevents lubricating oil from entering rotor chamber.
It should be appreciated by those skilled in the art that those skilled in the art combine the prior art and above-described embodiment can be real
The existing change case, it will not be described here.Such change case does not affect the essence of the present invention, and it will not be described here.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, devices and structures not described in detail herein should be understood as gives reality with the common mode in this field
It applies；Anyone skilled in the art makes many possible changes and modifications not departing from technical solution of the present invention, or
Equivalent example modified to equivalent change, this is not affected the essence of the present invention.Therefore, all without departing from skill of the present invention
The content of art scheme, according to the technical essence of the invention any simple modification made to the above embodiment, equivalent variations and repair
Decorations, all of which are still within the scope of protection of the technical scheme of the invention.
Claims (9)
1. a kind of sealing structure applied to helical-lobe compressor, which is characterized in that an axis of the rotor including helical-lobe compressor
Neck, the sealing shroud and circular channel being sheathed on axle journal；The axle journal runs through the circular channel；The sealing shroud is in cylinder
Shape；The sealing shroud is located in the circular channel；
Wherein, the surface of the sealing shroud is provided with several annular ribs around the sealing shroud；The annular rib and institute
State circular channel clearance seal；
Alternatively, the surface of the sealing shroud is provided with the thread protrusion around the sealing shroud；The thread protrusion and the circle
The sealing of shape path clearance.
2. being applied to the sealing structure of helical-lobe compressor as described in claim 1, which is characterized in that including around the axle journal
The lip-type packing of setting；The lip-type packing and the axle journal are interference fitted；The axle journal turns close to helical-lobe compressor
One end of son is proximal end, and one end of the rotor far from helical-lobe compressor is distal end；The lip-type packing is relative to the circle
Proximal end of the channel far from the axle journal.
3. being applied to the sealing structure of helical-lobe compressor as claimed in claim 2, which is characterized in that be arranged on the axle journal
Axle sleeve；The axle sleeve is set between the axle journal and the lip-type packing, separates the axle journal and the lip-type packing；
The lip-type packing and the axle sleeve are interference fitted；The axle journal and the axle sleeve are interference fitted.
4. being applied to the sealing structure of helical-lobe compressor as described in claim 1, which is characterized in that several annular ribs
Uniform intervals setting, size are identical；
Or the thread protrusion uniform intervals setting.
5. as described in claim 1 be applied to helical-lobe compressor sealing structure, which is characterized in that the sealing shroud with it is described
Axle journal interference fit.
6. being applied to the sealing structure of helical-lobe compressor as claimed in claim 3, which is characterized in that the outer surface of the axle sleeve
It is flushed with the highest point of the outer surface of the sealing shroud；The axle sleeve is close to the sealing shroud setting.
7. being applied to the sealing structure of helical-lobe compressor as claimed in claim 6, which is characterized in that the sealing shroud surface is set
What is set is the annular rib；Several annular ribs are evenly distributed on the whole surface of the sealing shroud；The sealing shroud
Length it is identical as the length of the circular channel.
8. the sealing structure applied to helical-lobe compressor as described in any one of claim 2,3,6,7, which is characterized in that
It further include the oil discharge passage being connected to ambient atmosphere；The import of the oil discharge passage is set to the circular channel and the lip shape
Between sealing ring；The outlet of the oil discharge passage is connected to ambient atmosphere.
9. a kind of balanced seal structure applied to helical-lobe compressor, which is characterized in that including appointing in two claims 1~8
It is applied to the sealing structure of helical-lobe compressor and the balance channel for self-balancing described in meaning one；Two sealing structures
Axle journal is located at same application in the opposite side of the rotor of helical-lobe compressor；Two sealing structures are respectively the first sealing structure
And second seals structure；One oral area of the balance channel is the first oral area, another oral area is the second oral area；Described first
Oral area is opened on the circular channel wall of first sealing structure；Second oral area is opened in the second seals structure
On circular channel wall；Gap between the sealing shroud and the circular channel of first sealing structure is the first gap；
Gap between the sealing shroud and the circular channel of the second seals structure is the second gap；The balance channel connects
Lead to first gap and second gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631638.XA CN109488598A (en) | 2018-12-29 | 2018-12-29 | Sealing structure and balanced seal structure applied to helical-lobe compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631638.XA CN109488598A (en) | 2018-12-29 | 2018-12-29 | Sealing structure and balanced seal structure applied to helical-lobe compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488598A true CN109488598A (en) | 2019-03-19 |
Family
ID=65713200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811631638.XA Pending CN109488598A (en) | 2018-12-29 | 2018-12-29 | Sealing structure and balanced seal structure applied to helical-lobe compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488598A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130998A (en) * | 2019-06-28 | 2019-08-16 | 重庆江增船舶重工有限公司 | A kind of the self-balancing cooling system and method for turbocompressor |
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| JPH02196187A (en) * | 1989-01-26 | 1990-08-02 | Hokuetsu Kogyo Co Ltd | Oil-free screw vacuum pump |
| JP2002089474A (en) * | 2000-09-08 | 2002-03-27 | Hokuetsu Kogyo Co Ltd | Shaft seal structure of oil-free screw compressor |
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| CN209324659U (en) * | 2018-12-29 | 2019-08-30 | 无锡五洋赛德压缩机有限公司 | Sealing structure and balanced seal structure applied to helical-lobe compressor |
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2018
- 2018-12-29 CN CN201811631638.XA patent/CN109488598A/en active Pending
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| JPH02196187A (en) * | 1989-01-26 | 1990-08-02 | Hokuetsu Kogyo Co Ltd | Oil-free screw vacuum pump |
| JP2002089474A (en) * | 2000-09-08 | 2002-03-27 | Hokuetsu Kogyo Co Ltd | Shaft seal structure of oil-free screw compressor |
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| JP2012127314A (en) * | 2010-12-17 | 2012-07-05 | Kobe Steel Ltd | Water injection type screw fluid machine |
| CN105065276A (en) * | 2015-07-22 | 2015-11-18 | 宋东方 | Combined type sealing device of dry screw vacuum pump |
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| Title |
|---|
| 沃林著；宋学文，张尔正译: "密封件与密封手册", 31 May 1990, 国防工业出版社, pages: 219 - 222 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130998A (en) * | 2019-06-28 | 2019-08-16 | 重庆江增船舶重工有限公司 | A kind of the self-balancing cooling system and method for turbocompressor |
| CN110130998B (en) * | 2019-06-28 | 2024-06-07 | 重庆江增船舶重工有限公司 | Self-balancing cooling system and method for turbine compressor |
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