CN104074550A - Lubricating oil-free sliding vane expander and/or compressor - Google Patents
Lubricating oil-free sliding vane expander and/or compressor Download PDFInfo
- Publication number
- CN104074550A CN104074550A CN201410321886.XA CN201410321886A CN104074550A CN 104074550 A CN104074550 A CN 104074550A CN 201410321886 A CN201410321886 A CN 201410321886A CN 104074550 A CN104074550 A CN 104074550A
- Authority
- CN
- China
- Prior art keywords
- rotor
- stator
- compressor
- slide plate
- bearing
- 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
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a lubricating oil-free sliding vane expander and/or compressor, which comprise a stator and a rotor, wherein the stator is provided with a stator inner cylinder; the rotor is eccentrically arranged in the stator inner cylinder; an exhaust end cover is arranged on one side of the stator; an output shaft end cover is arranged on the other side of the stator; a bearing positioning groove is formed in the inner side of the exhaust end cover; a first bearing bush is arranged in the bearing positioning groove; one end of a rotor shaft is movably arranged on the first bearing bush in a sleeving manner; the other end of the rotor shaft extends out a second bearing bush on the output shaft end cover; a sliding vane which slides in the radial direction is arranged in a rotor groove; solid lubricant coatings are separately coated on the circumferential surface of the stator inner cylinder; the outer surface of the sliding vane; the inner side surfaces of the exhaust end cover and the output shaft end cover and the inner circumferential surfaces of the first and second bearing bushes. The lubricating oil-free sliding vane expander and/or compressor has the advantage that the mixing of fluid medium of the sliding vane expander and lubricating oil is avoided; the problem that the fluid medium is contaminated by the lubricating oil is overcome and the original quality of the fluid medium is preserved.
Description
Technical field
The invention belongs to a kind of mechanical device that utilizes flowing medium to realize transformation of energy, be specifically related to a kind of slipping sheet expander and/or compressor.
Background technique
Slipping sheet expander oil supply system as shown in Figure 1, it comprises slipping sheet expander 1, oil pump 2 and oil-working medium separator 3, wherein slipping sheet expander 1 is core component, and it is converted into mechanical energy by the contained pressure energy of the gas of high pressure, liquid or gas-liquid mixture, outwards outputting power; Slipping sheet expander 1 keeps rotating, the necessary sufficient lubrication of its moving element and cooling, so slipping sheet expander 1 outside is provided with bearing oil filler pipe 6, rotor end-face oil filler pipe 7 and inner casing slide plate oil filler pipe 5 to slipping sheet expander 1 corresponding site oiling, especially, in order to give stator inner casing and the comprehensive oiling of slide plate of slipping sheet expander, lubricant oil is responsible for the coconnected inner casing slide plate of 4 sidewall oil filler pipe 5 from fluid and is injected, and high-pressure liquid is mixed with lubricant oil, is brought into the inside of slipping sheet expander 1 by high-pressure liquid.The low-pressure fluid of discharging from slipping sheet expander 1 low-pressure port contains lubricating oil family, so low-pressure fluid is introduced oil-working medium separator 3 through honeycomb duct 8, oil-working medium separator 3 is by the lubricating oil separation of mixing in low-pressure fluid, low-pressure fluid after separation is directly discharged, the lubricant oil that separation obtains stores in separator 3, the lubricant oil of storage boosts through oil pump 2, enters and in slipping sheet expander 1, carries out circulating lubrication.
The theory structure of slipping sheet expander 1 as shown in Figure 2, it has stator 11, stator 11 comprises stator inner casing 11a, in stator inner casing 11a, rotor 12 is installed, the axle center of the axis deviation stator cylinder of rotor 12, on rotor 12 excircles, have a plurality of axial rotor 13, in rotor 13, be placed with the slide plate 14 radially sliding.
Due to rotor eccentric configuration in stator inner casing, the spatial volume that cylinder inner wall and rotor outer circle surface form is asymmetric, and the spatial volume that wherein has a segmental arc is narrow and another segmental arc spatial volume is roomy relatively.Slide plate stretches out and is close in stator the inside wall of cylinder in rotor, asymmetric spatial separation is become to a plurality of cells, the cell volume that is positioned at narrow space is less, and the volume of cell that is positioned at wide space is larger, high-pressure fluid medium enters from little volume position, because impelling the direction that rotor increases to volume, the expansion of tightness and high-pressure fluid medium rotates, at volume maximum position, give off flowing medium, when constantly inputting high-pressure fluid medium and giving off flowing medium from volume maximum position from little volume position, just can make not stall of rotor moving, the residing position of slide plate is in continuous variation, the volume of each cell is also in continuous change, the pressure of cell inner fluid medium changes along with volume-variation.Like this, slipping sheet expander passes into high-pressure fluid medium and drives rotor, realizes again fluid medium pressure simultaneously and reduces.
The working procedure of slide vane compressor is the inverse process of slipping sheet expander, and namely, it is driven by external force, passes into low-pressure fluid medium, output high-pressure fluid medium.Slide vane compressor oil supply system is similar to slipping sheet expander oil supply system, include slide vane compressor, oil-working medium separator He Ge road oil filler pipe, oil pump is available parts, if do not used oil pump, utilize high-pressure fluid medium to produce oil pressure, to the moving element oiling of slide vane compressor.
The problem that above-mentioned oil lubricating type slipping sheet expander and/or compressor exist is: 1, mechanical device is in high speed operation process, lubricant oil mixes with flowing medium, flowing medium and lubricant oil are polluted mutually, although be provided with oil-working medium separator at flowing medium exhaust end, but can not thoroughly remove the lubricant oil composition in flowing medium, caused flowing medium quality or performance to reduce gradually, in lubricant oil, be also mingled with flowing medium, lubricating oil quality is also reduced gradually simultaneously.2, the occasion that has specific (special) requirements at some fluid medium cleanlinesss, for example high-pressure air is after slipping sheet expander decompression generating or refrigeration, people in the airtight microhabitat of post-decompression air supply (as cabin, submarine, the emergent control room of nuclear power station, underground engineering etc.) need be breathed to use, the air of the oily sludge that above-mentioned oil lubricating type slide plate fluid expansion power plant are discharged can not meet usage requirement.3, oil lubricating type decompressor and/or compressor need oil pump and oil-working medium separator of configuration cycles oiling, this has not only increased complexity and the manufacture cost of equipment greatly, and because oil pump needs consumed energy, and oil-working medium separator can increase exhaust resistance, reduce expansion ratio simultaneously, thereby the mechanical efficiency of mechanical device is significantly reduced.4, the flowing medium that gliding style decompressor and/or compressor move under some extreme conditions (as low temperature LNG, high temperature media, acidity or alkaline medium etc.), lubricant oil is had to extremely harsh physical and chemical indexes specific (special) requirements, this has not only increased the difficulty (even cannot select) that lubricant oil is selected, and uses special lubricating oil to increase considerably again mechanical device operating cost.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of slipping sheet expander and/or compressor of non lubricant oil, and it no longer mixes flowing medium with lubricant oil, avoids flowing medium to be subject to the pollution of lubricant oil, keeps the original quality of flowing medium.
Technical problem to be solved by this invention is to realize by such technological scheme, it includes stator and rotor, stator has stator inner casing, in stator inner casing, bias is provided with rotor, stator one side is equipped with exhaust end cover, the opposite side of stator is equipped with output shaft end cap, exhaust end cover inner side has bearing positioning groove, clutch shaft bearing cover is installed in bearing positioning groove, rotor shaft one end movable set puts at clutch shaft bearing, the second bearing housing that the rotor shaft the other end covers from output shaft end stretches out, the slide plate radially sliding is housed in rotor, circumferential surface at stator inner casing, the outer surface of slide plate, the inner peripheral surface of the inner side surface of exhaust end cover and output shaft end cap and clutch shaft bearing cover and the second bearing housing covers respectively solid lubricant coating.
Described solid lubricant coating is modified Teflon coating, modified polyetheretherketonefiber coating, molybdenum disulfide coating, modified graphite coating etc.
Owing to being coated with solid lubricant coating on all sliding contact surfaces of slipping sheet expander and/or compressor, realized the lubricated of all sliding contact surfaces, no longer needing provides lubricant oil to mechanical device, overcome to slipping sheet expander and/or the inner lubricant oil that injects of compressor, avoid flowing medium to be subject to the pollution of lubricant oil, kept the original quality of flowing medium.
Owing to having adopted technique scheme, the present invention has advantages of as follows: 1, avoided flowing medium to mix with lubricant oil, overcome flowing medium and be subject to lubricant pollution problem, kept the original quality of flowing medium; 2,, owing to having saved the oil supply component of slipping sheet expander and/or compressor outside, reduced the cost of mechanical device and improved the mechanical efficiency of mechanical device; 3, can adapt in extreme condition operation, expand the using scope of slipping sheet expander and/or compressor.
Accompanying drawing explanation
Accompanying drawing of the present invention is described as follows:
Fig. 1 is the oil supply system figure of existing slipping sheet expander;
Fig. 2 is the principle assumption diagram of slipping sheet expander;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the left view (partial sectional view) of Fig. 3;
Fig. 5 is the further improved rotor plan view of the present invention;
Fig. 6 is the rotor-side view of Fig. 5;
Fig. 7 is the further improved slide plate plan view of the present invention;
Fig. 8 is the slide plate side view of Fig. 7;
Fig. 9 is the slide plate plan view of Fig. 7.
In figure: 1. slipping sheet expander; 2. oil pump; 3. oil-working medium separator; 4. fluid is responsible for; 5. inner casing slide plate oil filler pipe; 6. bearing oil filler pipe; 7. rotor end-face oil filler pipe; 8. honeycomb duct; 11. stators; 11a. stator inner casing; 12. rotors; 13. rotor; 14. slide plates; 15. exhaust end covers; 16. output shaft end caps; 17. bearing positioning grooves; 18. clutch shaft bearing covers; 19. second bearing housings; 21. pits; 22. pinnacles; 23. wedge angle limits.
Embodiment
Slipping sheet expander take below as embodiment, and the invention will be further described by reference to the accompanying drawings:
As shown in Figure 3 and Figure 4: the present invention includes stator 11 and rotor 12, stator 11 has stator inner casing 11a, in stator inner casing 11a, bias is provided with rotor 12, stator 11 1 sides are equipped with exhaust end cover 15, the opposite side of stator 11 is equipped with output shaft end cap 16, exhaust end cover 15 inner sides have bearing positioning groove 17, clutch shaft bearing cover 18 is installed in bearing positioning groove 17, rotor shaft one end movable set is on clutch shaft bearing cover 18, second bearing housing 19 of the rotor shaft the other end from output shaft end cap 16 stretches out, to slipping sheet expander, rotor shaft outputting power, to slide vane compressor, rotor shaft is accepted power, the slide plate 14 radially sliding is housed in rotor 13, circumferential surface at stator inner casing 11a, the outer surface of slide plate 14, the inner peripheral surface of the inner side surface of exhaust end cover 15 and output shaft end cap 16 and clutch shaft bearing cover the 18 and second bearing housing 19 covers respectively solid lubricant coating.
Because the circumferential surface of stator inner casing 11a is coated with solid lubricant coating, between the slide plate 14 that stator inner casing 11a is in contact with it, there is lubrication; Because the outer surface of slide plate 14 is coated with solid lubricant coating, make to have there is lubrication between slide plate 14 and rotor 13 sidewalls; Because the inner side surface of exhaust end cover 15 and output shaft end cap 16 is coated with solid lubricant coating, make to have there is lubrication between two end caps and rotor 12 bi-side and slide plate 14 dual-sides; Inner peripheral surface covering solid lubricant coating due to clutch shaft bearing cover the 18 and second bearing housing 19, makes to have had lubrication between two bearing housings and rotating shaft.All sliding contact surfaces of slipping sheet expander 1 have all had lubrication like this, do not need to the inner lubricant oil that injects of slipping sheet expander again, have avoided the flowing medium of slipping sheet expander to be subject to the pollution of lubricant oil completely, keep the original quality of flowing medium.
Because slipping sheet expander 1 passes into high-pressure fluid medium, after constant entropy expansion is externally done work, output low-pressure fluid medium, fluid medium pressure reduces, and its temperature is also along with reduction.The flowing medium of cooling plays cooling effect to each sliding contact surface in slipping sheet expander 1, can avoid the problem of the damage of components that sliding friction synetion weak heat-dissipating causes.
The preferred modified Teflon coating of above-mentioned solid lubricant coating, modified polyetheretherketonefiber coating, molybdenum disulfide coating, modified graphite coating etc., in order to strengthen the lubrication effect of slipping sheet expander 1 interior sliding contact surface, in the solid lubricant coating of stator inner casing 11a circumferential surface, slide plate 14 outer surfaces, exhaust end cover 15 and output shaft end cap 16 inner side surfaces and clutch shaft bearing cover the 18 and second bearing housing 19 inner peripheral surfaces, apply grease based on molybdenum disulfide lithium.Further, slide plate 14 adopts modified polyetheretherketonefiber material or modified teflon material to make, and clutch shaft bearing cover the 18 and second bearing housing 19 is selected copper-base graphite mosaic solid lubrication bearing.
Due to the solid lubricant heat radiation of can not flowing, frictional heat produces temperature rise in the part of component, causes the frictional heat distortion of component, is mainly manifested in rotor 12 bi-side and slide plate 14 tops and occurs frictional heat distortion.Only there is 0.06-0.08mm in gap between rotor side surface and rubbing surface of end cover, the frictional heat distortion of rotor side surface causes rotor " stuck ", the frictional heat distortion at slide plate top causes top dimension to increase, slide plate is return rotor and is obstructed, cause slipping sheet expander and/or compressor normally not to move, when serious, damage slipping sheet expander and/or compressor.For this reason, the present invention has also done following improvement, to reduce friction area, to reduce frictional heating amount, reduces the frictional heat distortion of component, guarantees that slipping sheet expander and/or compressor normally move.
As shown in Figure 5 and Figure 6, on the fan section being divided into by rotor 13 in rotor 12 bi-side, have pit 21.This pit 21 has reduced the friction area of rotor side surface and rubbing surface of end cover, has reduced the heating value of rubbing surface, has reduced the frictional heat distortion of rotor side surface.In order to strengthen the lubrication effect of rotor side surface and rubbing surface of end cover, in pit 21, fill up solid lubrication fat, as select grease based on molybdenum disulfide lithium.
As shown in Figure 7, Figure 8 and Figure 9, slide plate 14 tops are pinnacle 22, and the dual-side of slide plate 14 is wedge angle limit 23.The pinnacle 22 at slide plate top and the wedge angle limit 23 of side form by slide plate edge chamfering or rounding, so described pinnacle 22 is little dome also, wedge angle limit 23 is the roundlet arm of angle also.The pinnacle 22 at slide plate top has reduced the area of contact on slide plate and stator inner casing 11a surface, the wedge angle limit 23 of slide plate 14 sides has reduced the area of contact of slide plate and rubbing surface of end cover, reduce the heating value of rubbing surface, reduced the frictional heat distortion of slide plate top and side.Because the tip size of slide plate is little, on slide plate pinnacle 22 and wedge angle limit 23, have under the condition of appropriate dilatancy, slide plate still can be return rotor, and slipping sheet expander and/or compressor can normally move.
The present invention uses solid lubricant coating to substitute lubricant oil, also has following technique effect:
1, mechanical device slipping sheet expander and/or compressor being consisted of slipping sheet expander 1 or compressor, oil pump 2, separator 1 and a plurality of oiling pipe fitting is reduced to only slipping sheet expander or compressor, make it simple in structure, volume reduces, be conducive to install and use and safeguard, manufacture cost reduces greatly;
2, save bearing oil hole and the end face oil hole of offering on exhaust end cover 15 and output shaft end cap 16, made two end cap manufacturing simple, and increased the structural strength of two end caps.
Claims (8)
1. the slipping sheet expander of a non lubricant oil and/or compressor, include stator (11) and rotor (12), stator (11) has stator inner casing (11a), in stator inner casing (11a), bias is provided with rotor (12), stator (11) one sides are equipped with exhaust end cover (15), the opposite side of stator (11) is equipped with output shaft end cap (16), exhaust end cover (15) inner side has bearing positioning groove (17), clutch shaft bearing cover (18) is installed in bearing positioning groove (17), rotor shaft one end movable set is on clutch shaft bearing cover (18), second bearing housing (19) of the rotor shaft the other end from output shaft end cap (16) stretches out, the slide plate (14) radially sliding is housed in rotor (13), it is characterized in that: at the circumferential surface of stator inner casing (11a), the outer surface of slide plate (14), the inner peripheral surface of the inner side surface of exhaust end cover (15) and output shaft end cap (16) and clutch shaft bearing cover (18) and the second bearing housing (19) covers respectively solid lubricant coating.
2. the slipping sheet expander of non lubricant oil according to claim 1 and/or compressor, is characterized in that: described solid lubricant layer is modified Teflon coating, modified polyetheretherketonefiber coating, molybdenum disulfide coating or graphite coating.
3. sliding vane fluid expansion power plant according to claim 2, is characterized in that: in the solid lubricant coating of stator inner casing (11a) circumferential surface, slide plate (14) outer surface, exhaust end cover (15) and output shaft end cap (16) inner side surface and clutch shaft bearing cover (18) and the second bearing housing (19) inner peripheral surface, be also coated with grease based on molybdenum disulfide lithium.
4. the slipping sheet expander of non lubricant oil according to claim 3 and/or compressor, it is characterized in that: slide plate (14) is made by modified polyetheretherketonefiber or modified teflon material, clutch shaft bearing cover (18) and the second bearing housing (19) are copper base modified graphite mosaic solid lubrication bearing.
5. according to slipping sheet expander and/or the compressor of the non lubricant oil described in arbitrary claim in claim 1 to 4, it is characterized in that: on the fan section being divided into by rotor (13) in rotor (12) bi-side, have pit (21).
6. the slipping sheet expander of non lubricant oil according to claim 5 and/or compressor, is characterized in that: in described pit (21), be filled with solid lubrication fat.
7. the slipping sheet expander of non lubricant oil according to claim 6 and/or compressor, is characterized in that: slide plate (14) top is pinnacle (22).
8. the slipping sheet expander of non lubricant oil according to claim 7 and/or compressor, is characterized in that: the dual-side of slide plate (14) is wedge angle limit (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410321886.XA CN104074550A (en) | 2014-07-08 | 2014-07-08 | Lubricating oil-free sliding vane expander and/or compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410321886.XA CN104074550A (en) | 2014-07-08 | 2014-07-08 | Lubricating oil-free sliding vane expander and/or compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104074550A true CN104074550A (en) | 2014-10-01 |
Family
ID=51596116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410321886.XA Pending CN104074550A (en) | 2014-07-08 | 2014-07-08 | Lubricating oil-free sliding vane expander and/or compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104074550A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134593A (en) * | 2015-10-09 | 2015-12-09 | 南京尚爱机械制造有限公司 | Host machine of novel oil injection sliding vane air compressor |
| CN107642381A (en) * | 2017-09-27 | 2018-01-30 | 重庆华稷新能源科技有限公司 | A kind of rolling-rotor expanding machine or compressor |
| CN108678810A (en) * | 2018-07-27 | 2018-10-19 | 江苏丰泰流体机械科技有限公司 | Plane rotation formula expanding machine |
| CN110067752A (en) * | 2019-04-17 | 2019-07-30 | 耐力股份有限公司 | A kind of new energy oil-free sliding vane type air compressor machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3190183A (en) * | 1962-05-10 | 1965-06-22 | Cooper Bessemer Corp | Air tool improvement |
| US3760478A (en) * | 1971-10-04 | 1973-09-25 | Borg Warner | Method for assembling a rotary sliding vane compressor |
| JPS5596301A (en) * | 1979-01-18 | 1980-07-22 | Matsushita Electric Ind Co Ltd | Sliding vane type expansion machine |
| CN101162113A (en) * | 2007-11-02 | 2008-04-16 | 西安交通大学 | Structure of wiper decompressor for trans-critical CO2 refrigerating cycle system |
| CN201100234Y (en) * | 2007-10-23 | 2008-08-13 | 西安交通大学 | A sliding slice swelling machine |
-
2014
- 2014-07-08 CN CN201410321886.XA patent/CN104074550A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3190183A (en) * | 1962-05-10 | 1965-06-22 | Cooper Bessemer Corp | Air tool improvement |
| US3760478A (en) * | 1971-10-04 | 1973-09-25 | Borg Warner | Method for assembling a rotary sliding vane compressor |
| JPS5596301A (en) * | 1979-01-18 | 1980-07-22 | Matsushita Electric Ind Co Ltd | Sliding vane type expansion machine |
| CN201100234Y (en) * | 2007-10-23 | 2008-08-13 | 西安交通大学 | A sliding slice swelling machine |
| CN101162113A (en) * | 2007-11-02 | 2008-04-16 | 西安交通大学 | Structure of wiper decompressor for trans-critical CO2 refrigerating cycle system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134593A (en) * | 2015-10-09 | 2015-12-09 | 南京尚爱机械制造有限公司 | Host machine of novel oil injection sliding vane air compressor |
| CN105134593B (en) * | 2015-10-09 | 2017-03-22 | 南京尚爱机械制造有限公司 | Host machine of oil injection sliding vane air compressor |
| CN107642381A (en) * | 2017-09-27 | 2018-01-30 | 重庆华稷新能源科技有限公司 | A kind of rolling-rotor expanding machine or compressor |
| CN108678810A (en) * | 2018-07-27 | 2018-10-19 | 江苏丰泰流体机械科技有限公司 | Plane rotation formula expanding machine |
| CN108678810B (en) * | 2018-07-27 | 2023-09-19 | 江苏丰泰流体机械科技有限公司 | Plane rotary expander |
| CN110067752A (en) * | 2019-04-17 | 2019-07-30 | 耐力股份有限公司 | A kind of new energy oil-free sliding vane type air compressor machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107250547B (en) | Without oil feeding type compressor | |
| CN104074550A (en) | Lubricating oil-free sliding vane expander and/or compressor | |
| CN203871994U (en) | Motor cooling system | |
| RU2014138930A (en) | SCREW COMPRESSOR | |
| KR101941320B1 (en) | Turbo-compressor train with rolling bearings and related assembly method | |
| CN209308759U (en) | A kind of bearing arrangement of turbocharger | |
| CN102626790A (en) | Turbine air-floatation main shaft | |
| WO2014038080A1 (en) | Thrust bearing device and rotating machine using same | |
| CN101418996A (en) | A kind of floating bearing type high-speed electric expreess locomotive driven air refrigeration machine with static pressure rotary drive | |
| CN106415011B (en) | Gear petrolift | |
| CN2711469Y (en) | Mechanical seal device for light hydrocarbon pump | |
| CN205639280U (en) | Slot type refrigerant dynamic pressure fluid oil -free lubrication bearing of high nip coupling is vice | |
| CN105201557A (en) | Rotary blade machine | |
| CN103835947A (en) | Closed triangle rotor micro-compressor | |
| US20100310402A1 (en) | Screw compressor | |
| CN109653973B (en) | Water lubrication shaft valve composite flow distribution radial plunger pump | |
| CN203906300U (en) | Self-cooling double-oil tank roots blower | |
| CN203272216U (en) | Mechanical labyrinth seal of nuclear main pump bidirectional thrust bearing circulation lubricating oil system | |
| CN105089704A (en) | Self-lubricating vortex expansion power generation set | |
| CN105041463A (en) | Power output device of screw tube rotor engine | |
| US10208768B2 (en) | Heat shield for pressure casing | |
| CN102287510B (en) | Novel planetary gear transmission device | |
| CN203515678U (en) | Vane type energy conversion device | |
| CN202883218U (en) | Bearing structure of overall horizontal type hydro-generator | |
| CN103089691A (en) | Centrifugal compressor bearing, centrifugal compressor and air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141001 |
|
| RJ01 | Rejection of invention patent application after publication |