CN102767562A - Gas dynamic and static pressure mixed thrust protection bearing for electromagnetic bearing system - Google Patents
Gas dynamic and static pressure mixed thrust protection bearing for electromagnetic bearing system Download PDFInfo
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- CN102767562A CN102767562A CN2012102499960A CN201210249996A CN102767562A CN 102767562 A CN102767562 A CN 102767562A CN 2012102499960 A CN2012102499960 A CN 2012102499960A CN 201210249996 A CN201210249996 A CN 201210249996A CN 102767562 A CN102767562 A CN 102767562A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0603—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
- F16C32/0614—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
- F16C32/0622—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings via nozzles, restrictors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/045—Sliding-contact bearings for exclusively rotary movement for axial load only with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0681—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load
- F16C32/0692—Construction or mounting aspects of hydrostatic bearings, for exclusively rotary movement, related to the direction of load for axial load only
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention relates to the technical field of electromagnetic bearings and particularly discloses a gas dynamic and static pressure mixed thrust protection bearing for electromagnetic bearing system. The protection bearing includes a gas static pressure thrust bearing, a gas dynamic pressure thrust bearing and a gas supply system. The gas static pressure thrust bearing and the gas dynamic pressure thrust bearing both generate axial forces, the direction of the resultant force of the axial forces is opposite to the direction of the force to be born, and the gas supply system provides high pressure gas to the gas static pressure thrust bearing. The inventive gas dynamic and static pressure mixed thrust protection bearing is simple in structure and easy to process and operate, can provide sufficient rigidity to support the rotor during idle rotation after the rotor drops, reduces contact and wear of the main shaft thrust disc and the protection bearing, reduces the negative influences of vibration and impact accompanied by rotor drop, prolongs the service life of the protection bearing, and improves reliability of the electromagnetic bearing system.
Description
Technical field
The present invention relates to the electromagnetic bearing technical field, particularly a kind of gas active and static pressure that is used for active magnetic bearing system is mixed thrust protection bearing.
Background technique
Active magnetic bearing system generally comprises protection bearing (being also referred to as " auxiliary bearing ", " emergent bearing ", " replacement bearing "); Its effect is when electromagnetic bearing lost efficacy; Axially with the rotor of temporary support high speed rotating radially, thereby protection electromagnetic bearing device is without prejudice.Therefore, the Performance And Reliability of protection bearing is very important to the user of rotating machinery.
High temperature gas cooled reactor is to be that moderator, helium are that a kind of inherent safety of freezing mixture is good, generating efficiency is high, the advanced very widely nuclear reactor of purposes with graphite.The purpose of Shandong, Huaneng Group Shidao Bay nuclear power plant high temperature gas cooled reactor nuclear power station demonstration project (HTR-PM) then is to build up first commercial MHTR nuclear power station of using in the world.The HTR-PM Helium fan will adopt the electromagnetic bearing supporting.The HTR-PM Helium fan is the vertical single stage centrifugal compressor, and the operation medium is a helium, can not introduce any oil or impurity and get into reactor-loop, and it is any lubricated that this means that also the bearing that is adopted can not adopt.For the HTR-PM Helium fan; If the protection bearing adopts the traditional sliding bearing or the structure of rolling bearing, when electromagnetic bearing lost efficacy, owing to have no lubricated; Produce dry friction between rotor that falls and the protection bearing; The abrasion that causes down at a high speed is big, even " spot welding " occurs, with the damage that causes protection bearing even electromagnetic bearing.At this moment, the protection bearing will become very little in the back reliability of falling of experience limited number of time.For the rotating machinery of this vertical layout of HTR-PM Helium fan, when rotor falls also running down, the thrust force protection bearing will be brought into play main effect.
Therefore, be application background with the HTR-PM Helium fan, in conjunction with more than various usage requirements; The present invention proposes a kind of gas active and static pressure and mix the scheme of thrust protection bearing; Under the situation of not introducing any impurity, provide bearing capacity to support the rotor that falls the back running down jointly through gas-static effect and dynamic pressure effect, prevent contacting and wearing and tearing of thrust disc and protection bearing; Reduce and to follow the vibration that rotor falls and the negative effect of impact; Prolong the working life of protection bearing, improve the reliability of active magnetic bearing system, ensure HTR-PM Helium fan reliable operation.
Summary of the invention
The technical problem that (one) will solve
The present invention provides a kind of gas active and static pressure to mix thrust protection bearing, can effectively improve the Performance And Reliability of protection bearing, under this particular application of high temperature gas cooled reactor, can also not introduce any impurity and get into reactor-loop.
(2) technological scheme
In order to address the above problem, the present invention provides a kind of gas active and static pressure that is used for active magnetic bearing system to mix thrust protection bearing, and said protection bearing comprises gas-static thrust-bearing, gas dynamic pressure thrust-bearing and air supply system;
Said gas-static thrust-bearing and gas dynamic pressure thrust-bearing all produce axial force, and the resultant direction of both axial forces is opposite with the force direction that need bear;
The gas dynamic pressure thrust-bearing is enclosed within on the main shaft, and rotates with main shaft;
Said gas-static thrust-bearing is positioned at the below of gas dynamic pressure thrust-bearing, and leaves the space between the two;
Said air supply system is connected with the gas-static thrust-bearing, to said gas-static thrust-bearing pressurized gas is provided.
Further, said gas dynamic pressure thrust-bearing comprises rotating ring, and said rotating ring and main shaft thrust disc are same target, are sheathed on the main shaft, and the dynamic pressure groove is circumferentially evenly arranged in said rotating ring bottom.
Further, said gas-static thrust-bearing comprises stationary ring, and anchor ring relative with the dynamic pressure groove on the said stationary ring is provided with balancing slit, and said stationary ring is inner along circumferentially evenly arranging throttle orifice, and said throttle orifice communicates with balancing slit.
Further, said air supply system comprises gas cylinder, solenoid valve, decompression voltage stabilizer, air supply pipe and pipeline.
Further, said solenoid valve is a closed condition when the rotor proper functioning; Said solenoid valve is opening state when rotor falls.
Further, said air supply system is helium to the gas that the gas-static thrust-bearing provides in high temperature gas cooled reactor.
(3) beneficial effect
The gas active and static pressure that is used for active magnetic bearing system provided by the invention is mixed thrust protection bearing, has the following advantages:
(1) provide bearing capacity to support the rotor that falls the back running down jointly through gas-static effect and dynamic pressure effect; Reduce thrust disc and protect contacting and wearing and tearing of bearing; Reduce and to follow the vibration that rotor falls and the negative effect of impact; Prolong the working life of protection bearing, improve the reliability of active magnetic bearing system;
(2) simple in structure, be prone to processing, make and operation;
(3) be applicable to various working and environment, practicability is big;
(4), can not introduce any impurity for application circumstances such as high temperature gas cooled reactors.
Description of drawings
Fig. 1 mixes the schematic representation that thrust protection bearing is used for active magnetic bearing system for the gas active and static pressure of a certain combination form;
Fig. 2 is the gas dynamic pressure thrust-bearing schematic representation under the selected combination form;
Fig. 3 is the gas-static thrust-bearing schematic representation under the selected combination form.
Wherein: 1, rotating ring; 2, spiral chute; 3, balancing slit; 4, stationary ring; 5, throttle orifice; 6, gas cylinder; 7, solenoid valve; 8, air supply pipe; 9, decompression voltage stabilizer; 10, main shaft.
Embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Shown in Fig. 1-3, the gas active and static pressure that is used for active magnetic bearing system that the embodiment of the invention provides is mixed thrust protection bearing, comprising: gas-static thrust-bearing, gas dynamic pressure thrust-bearing and air supply system three parts.Wherein, the selection principle of gas-static thrust-bearing and gas dynamic pressure thrust-bearing is: both all produce axial force, and the resultant direction of both axial forces is opposite with the force direction that need bear.Gas-static thrust-bearing and the combination of gas dynamic pressure thrust-bearing of satisfying this condition constitute gas active and static pressure mixing thrust protection bearing.Therefore; Can from existing all types of gas-static thrust-bearings and gas dynamic pressure thrust-bearing, select and design according to usage requirement; For example, the gas-static thrust-bearing can be selected any of orifice restriction type, ring restrictor type, pore throttling type, variable restrictor type etc.; The gas dynamic pressure thrust-bearing can be selected any of spiral flute type, herringbone grooved, ladder-type etc.Because the combination form that can satisfy condition is a lot, the example that is combined as that Fig. 1 has chosen spiral chute gas dynamic pressure thrust-bearing and orifice restriction type gas-static thrust-bearing describes, and the principle of other combination is identical therewith with action.
For air supply system, its effect is to continue to gas-static thrust-bearing air feed in the running down process after rotor falls.
The gas active and static pressure that is used for active magnetic bearing system that the embodiment of the invention provides is mixed thrust and is protected the mode of execution of bearing following:
Because the gas dynamic pressure thrust-bearing that satisfies condition and the combination form of gas hydrostatic thrust bearing are a lot; Applicable situation is also a lot, and the Combination application that Fig. 1 has only chosen spiral chute gas dynamic pressure thrust-bearing and orifice restriction type gas-static thrust-bearing is that example describes in the HTR-PM Helium fan.
The gas dynamic pressure thrust-bearing mainly comprises rotating ring 1, dynamic pressure groove, and the dynamic pressure groove adopts spiral chute 2 in the type, and is as shown in Figure 2.The thrust disc of main shaft 10 is the dishes that are configured in that axle is gone up and rotate with axle.Rotating ring 1 is a same target with thrust disc.On the rotating ring plane relative, circumferentially process desired spiral chute 2 with stationary ring 4.
The gas-static thrust-bearing mainly comprises stationary ring 4, throttle orifice 5 and balancing slit 3, and is as shown in Figure 3.Processing balancing slit 3 on the stationary ring plane relative with rotating ring 1, stationary ring 4 is inner along circumferentially evenly arranging throttle orifice 5, and throttle orifice 5 communicates with balancing slit 3.
The gas-static thrust-bearing is positioned at the below of gas dynamic pressure thrust-bearing, leaves certain clearance between the two.
Air supply system is connected with the gas-static thrust-bearing, mainly comprises gas cylinder 6, solenoid valve 7, air supply pipe 8, decompression voltage stabilizer 9.For the pressure helium is arranged, solenoid valve 7 is a normal close valve in the gas cylinder 6.When detecting rotor and begin to fall; Solenoid valve 7 is opened in automatic interlock immediately, and gas is through 9 voltage stabilizings of decompression voltage stabilizer, through air supply pipe 8; Air supply system provides the helium of required pressure to the gas-static thrust-bearing, and gas-static effect and dynamic pressure effect support the rotor of running down simultaneously.Mix thrust protection bearing working principle according to the gas active and static pressure, the open valve events time of solenoid valve after rotor falls is short more good more.
The working principle that the gas active and static pressure that is used for active magnetic bearing system that the embodiment of the invention provides is mixed thrust protection bearing is following:
During by the rotor proper functioning of electromagnetic bearing supporting, mainly produce the rotation of electromagnetic force supporting rotor through electromagnetic bearing.At this moment, because rotating ring 1 rotates with main shaft 10, the dynamic pressure thrust-bearing can produce certain dynamic pressure effect, and the bearing capacity that this dynamic pressure effect produces is with the electromagnetic force supporting rotor rotation of electromagnetic bearing.
When electromagnetic bearing lost efficacy, rotor fell, and sent stopping signal, and rotor begins running down.At this moment, the gas dynamic pressure thrust-bearing still produces dynamic pressure effect and bearing capacity is provided; Simultaneously, rapidly to gas-static thrust-bearing air feed, hydrostatic effects and dynamic pressure effect act on simultaneously through air supply system, provide enough big bearing capacity supporting rotor to suspend.Therefore; Gravity and the bigger situation of inertial force during for this running down of similar HTR-PM Helium fan system; Because the rigidity that dynamic pressure effect produces is limited; Supporting rotor separately, if adopt gas active and static pressure provided by the invention to mix thrust protection bearing, rotor only begins to drop to protecting bearing that the air supply system pipeline is opened contacts and produce dry friction in during this period of time at rotor.Therefore, after rotor fell and sends stopping signal, the air supply system pipeline should be opened in the short as far as possible time, shortened the dry friction time of rotor with the protection bearing of running down.Through investigation, there are the products such as solenoid valve that meet the demands on the market, they can open the air supply system pipeline rapidly to gas-static thrust-bearing air feed in several seconds zero point.Be after rotor falls, the dry friction endurance of rotor and protection bearing is in one second.The less situation of gravity and inertial force when falling for rotor, rotor begin to drop to the air supply system pipeline is opened during this period of time in, possible dynamic pressure effect separately just can supporting rotor, at this moment rotor will can not produce dry friction with the protection bearing.Along with the running down of rotor, rotor speed reduces gradually, and dynamic pressure effect also reduces, and at this moment will mainly rely on hydrostatic effects to come supporting rotor, avoids producing dry friction between rotor and the protection bearing.But when adopting traditional sliding bearing or rolling bearing as the protection bearing, under any circumstance, rotor is in dry condition with the protection bearing always in rotor running down process.When adopting the gas active and static pressure that is used for active magnetic bearing system provided by the invention to mix thrust protection bearing; Owing to begin to fall in rotor stops running down during this period of time from rotor; Rotor can both be in the suspension bearing state basically, and this has also reduced impact, vibration that the rotor running down is produced to greatest extent, has reduced the wearing and tearing to the protection bearing; Prolong the working life of protection bearing, improved the reliability of active magnetic bearing system.
The source of the gas of air supply system can be selected according to Environmental Conditions.For example, for the HTR-PM Helium fan, can select pure helium to do source of the gas, this will not produce any negative effect to reactor-loop.
The gas active and static pressure that is used for active magnetic bearing system provided by the invention is mixed thrust protection bearing, has the following advantages:
(1) provide bearing capacity to support the rotor that falls the back running down jointly through gas-static effect and dynamic pressure effect; Reduce thrust disc and protect contacting and wearing and tearing of bearing; Reduce and to follow the vibration that rotor falls and the negative effect of impact; Prolong the working life of protection bearing, improve the reliability of active magnetic bearing system;
(2) simple in structure, be prone to processing, make and operation;
(3) be applicable to various working and environment, practicability is big;
(4), can not introduce any impurity for application circumstances such as high temperature gas cooled reactors.
Above mode of execution only is used to explain the present invention; And be not limitation of the present invention; The those of ordinary skill in relevant technologies field under the situation that does not break away from the spirit and scope of the present invention, can also be made various variations and modification; Therefore all technological schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (6)
1. a gas active and static pressure that is used for active magnetic bearing system is mixed thrust protection bearing, it is characterized in that said protection bearing comprises gas-static thrust-bearing, gas dynamic pressure thrust-bearing and air supply system;
Said gas-static thrust-bearing and gas dynamic pressure thrust-bearing all produce axial force, and the resultant direction of both axial forces is opposite with the force direction that need bear;
The gas dynamic pressure thrust-bearing is enclosed within on the main shaft, and rotates with main shaft;
Said gas-static thrust-bearing is positioned at the below of gas dynamic pressure thrust-bearing, and leaves the space between the two;
Said air supply system is connected with the gas-static thrust-bearing, to said gas-static thrust-bearing pressurized gas is provided.
2. the gas active and static pressure that is used for active magnetic bearing system as claimed in claim 1 is mixed thrust protection bearing, it is characterized in that said gas dynamic pressure thrust-bearing comprises rotating ring, is sheathed on the main shaft, and the dynamic pressure groove is circumferentially evenly arranged in said rotating ring bottom.
3. the gas active and static pressure that is used for active magnetic bearing system as claimed in claim 1 is mixed thrust protection bearing; It is characterized in that; Said gas-static thrust-bearing comprises stationary ring; Anchor ring relative with the dynamic pressure groove on the said stationary ring is provided with balancing slit, and said stationary ring is inner along circumferentially evenly arranging throttle orifice, and said throttle orifice communicates with balancing slit.
4. the gas active and static pressure that is used for active magnetic bearing system as claimed in claim 1 is mixed thrust protection bearing, it is characterized in that said air supply system comprises gas cylinder, solenoid valve, decompression voltage stabilizer, air supply pipe and pipeline.
5. the gas active and static pressure that is used for active magnetic bearing system as claimed in claim 4 is mixed thrust protection bearing, it is characterized in that said solenoid valve is a closed condition when the rotor proper functioning; Said solenoid valve is opening state when rotor falls.
6. the gas active and static pressure that is used for active magnetic bearing system as claimed in claim 1 is mixed thrust protection bearing, it is characterized in that, the gas that provides to the gas-static thrust-bearing is helium in high temperature gas cooled reactor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210249996.0A CN102767562B (en) | 2012-07-18 | 2012-07-18 | Gas dynamic and static pressure mixed thrust protection bearing for electromagnetic bearing system |
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| CN201210249996.0A CN102767562B (en) | 2012-07-18 | 2012-07-18 | Gas dynamic and static pressure mixed thrust protection bearing for electromagnetic bearing system |
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| CN102767562A true CN102767562A (en) | 2012-11-07 |
| CN102767562B CN102767562B (en) | 2015-01-14 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443579A (en) * | 2016-01-25 | 2016-03-30 | 武汉科技大学 | High-pressure disc thrust gas bearing adopting double symmetrical contraction sections for gas supply and design method |
| CN105626692A (en) * | 2016-03-14 | 2016-06-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Linear compressor and gas bearing structure thereof |
| CN108374839A (en) * | 2018-03-09 | 2018-08-07 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Gas shield device and air axis protective device |
| CN108868893A (en) * | 2018-01-12 | 2018-11-23 | 至玥腾风科技投资集团有限公司 | A kind of rotor-support-foundation system and its control method and Gas Turbine Generating Units and its control method |
| CN109435708A (en) * | 2018-07-06 | 2019-03-08 | 至玥腾风科技投资集团有限公司 | A kind of extended-range electric motor coach |
| CN110107595A (en) * | 2019-04-11 | 2019-08-09 | 西安理工大学 | By the Hydrodynamic-static Thrust Bearings in Water Turbo of tilting bush and static-pressure oil chamber sharing lood |
| WO2020096807A1 (en) * | 2018-11-05 | 2020-05-14 | Energy Recovery, Inc. | System for hybrid hydrodynamic-hydrostatic thrust bearings |
| CN111237341A (en) * | 2020-03-09 | 2020-06-05 | 南京工业大学 | Gas thrust bearing with hybrid action of dynamic pressure and static pressure |
| CN111734741A (en) * | 2020-05-13 | 2020-10-02 | 山东华东风机有限公司 | Axial magnetic-gas combined bearing device |
| CN112128246A (en) * | 2020-09-22 | 2020-12-25 | 东南大学 | Axial small-hole normal-pressure water supply dynamic-static pressure spiral groove thrust bearing |
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| US4696584A (en) * | 1982-11-19 | 1987-09-29 | U.S. Philips Corporation | Self-cleaning air bearing comprising a flow equalizing groove at the bearing periphery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443579B (en) * | 2016-01-25 | 2016-11-16 | 武汉科技大学 | A kind of high pressure Circular Thrust gas bearing using disymmetry contraction section to supply and method for designing |
| CN105443579A (en) * | 2016-01-25 | 2016-03-30 | 武汉科技大学 | High-pressure disc thrust gas bearing adopting double symmetrical contraction sections for gas supply and design method |
| CN105626692A (en) * | 2016-03-14 | 2016-06-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Linear compressor and gas bearing structure thereof |
| CN105626692B (en) * | 2016-03-14 | 2018-10-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Linearkompressor and its gas bearing structure |
| CN108868893A (en) * | 2018-01-12 | 2018-11-23 | 至玥腾风科技投资集团有限公司 | A kind of rotor-support-foundation system and its control method and Gas Turbine Generating Units and its control method |
| CN108868893B (en) * | 2018-01-12 | 2024-04-02 | 刘慕华 | Rotor system and control method thereof, gas turbine generator set and control method thereof |
| CN108374839A (en) * | 2018-03-09 | 2018-08-07 | 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） | Gas shield device and air axis protective device |
| CN109435708B (en) * | 2018-07-06 | 2024-03-19 | 刘慕华 | Range-extending electric bus |
| CN109435708A (en) * | 2018-07-06 | 2019-03-08 | 至玥腾风科技投资集团有限公司 | A kind of extended-range electric motor coach |
| WO2020096807A1 (en) * | 2018-11-05 | 2020-05-14 | Energy Recovery, Inc. | System for hybrid hydrodynamic-hydrostatic thrust bearings |
| US10731702B2 (en) | 2018-11-05 | 2020-08-04 | Energy Recovery, Inc. | System and method for hybrid hydrodynamic-hydrostatic thrust bearings |
| CN113195912A (en) * | 2018-11-05 | 2021-07-30 | 能量回收股份有限公司 | System and method for hybrid hydrodynamic-hydrostatic thrust bearing |
| CN113195912B (en) * | 2018-11-05 | 2022-10-04 | 能量回收股份有限公司 | System and method for hybrid hydrodynamic-hydrostatic thrust bearing |
| CN110107595B (en) * | 2019-04-11 | 2020-07-28 | 西安理工大学 | Dynamic and static pressure thrust bearing jointly borne by tilting pad and static pressure oil cavity |
| CN110107595A (en) * | 2019-04-11 | 2019-08-09 | 西安理工大学 | By the Hydrodynamic-static Thrust Bearings in Water Turbo of tilting bush and static-pressure oil chamber sharing lood |
| CN111237341A (en) * | 2020-03-09 | 2020-06-05 | 南京工业大学 | Gas thrust bearing with hybrid action of dynamic pressure and static pressure |
| CN111734741A (en) * | 2020-05-13 | 2020-10-02 | 山东华东风机有限公司 | Axial magnetic-gas combined bearing device |
| CN112128246A (en) * | 2020-09-22 | 2020-12-25 | 东南大学 | Axial small-hole normal-pressure water supply dynamic-static pressure spiral groove thrust bearing |
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| CN102767562B (en) | 2015-01-14 |
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