CN1015397B - Pneumatic wave power device - Google Patents
Pneumatic wave power deviceInfo
- Publication number
- CN1015397B CN1015397B CN89107867A CN89107867A CN1015397B CN 1015397 B CN1015397 B CN 1015397B CN 89107867 A CN89107867 A CN 89107867A CN 89107867 A CN89107867 A CN 89107867A CN 1015397 B CN1015397 B CN 1015397B
- Authority
- CN
- China
- Prior art keywords
- air
- air chamber
- generator
- dynamo room
- turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Sealing Of Bearings (AREA)
Abstract
The present invention relates to an air-tighted interface type upright post seal which achieves the sealing effect by controlling the ratio between the effective volume of an inner cavity of a generator and the effective volume of an inner cavity of a sealing ring, namely when VII/VI is greater than (P2-P1) /P1 (VI represents the effective volume of an inner cavity of a generator, VII represents the effective volume of an inner cavity of a sealing ring, P1 represents the pressure before sea water intrusion, and P2 represents the pressure after sea water intrusion), the sealing effect is achieved. As compared with the traditional upright shaft seal, the present invention has the advantage of good sealing quality, and simultaneously has the characteristics of low power consumption, zero wear, maintenance free and long service life.
Description
The present invention relates to a kind of improved pneumatic type apparatus for generating electricity by wave force.
Apparatus for generating electricity by wave force is to utilize that reproducible wave energy is power on the ocean, and generating also can be made the long-acting power supply of marine hydrology, meteorological automatic telemetering buoy for coastal waterway navigation mark light usefulness.The working principle of pneumatic type apparatus for generating electricity by wave force is: utilize the motion of buoy with the wave heave, convert wave energy to the air energy by the center tube air chamber, air can convert rotating mechanical energy to by air turbine, AC permanent-magnetic generator converts rotating mechanical energy to AC energy, silicon rectifier converts Ac to direct current, storage battery is stored unsettled direct current then, for use.This miniature pneumatic formula apparatus for generating electricity by wave force adopts the direct connection structure usually, and promptly air turbine is directly installed on the outrigger shaft of generator.Invade bearing and generator for preventing seawater, must install shaft sealing, shaft sealing at present has multiple: as air type sealing, contact seal and slit seal etc., the air type sealing now is detected in Submerged Motor Pumps (seeing " pump technology " 1977.2 " experimental study of aeroseal Submerged Motor Pumps ").The vertical spindle sealing that the pneumatic type apparatus for generating electricity by wave force adopts so far mainly is contact seal and slit seal, adopt contact seal (as lip seal, mechanical seal etc.), can prevent the intrusion of seawater under certain pressure head, but for the apparatus for generating electricity by wave force of long-term unattended and maintenance, its life-span is short, poor reliability, and also friction power loss is big, for the symmetrical wing turbine wave power generation unit of starting performance difference, fatal especially weakness.Adopt the apparatus for generating electricity by wave force of slit seal (as labyrinth sealing), have power consumption little, do not hinder advantages such as turbine engine group starting, but can only prevent that seawater is splashed into, can not prevent the seawater intrusion, only be applicable to the marine site that water is shallow, flow velocity is low, stormy waves is little, application area is very limited.
Purpose of the present invention just provides a kind of novel pneumatic type apparatus for generating electricity by wave force, and it has adopted the aeroseal structure, can prevent the intrusion of seawater effectively, has characteristics such as power consumption is little, nothing wearing and tearing, Maintenance free management, life-span length again.
The pneumatic type apparatus for generating electricity by wave force adopts the aeroseal structure, its principle is when utilizing seawater to invade, seawater gets up the air seal in generator and the air chamber inner chamber, in air chamber, form gas-liquid interface and realize pressure balance, as long as the pressure of seawater is not more than a certain numerical value, seawater just can not invaded bearing and generator.
This pneumatic type apparatus for generating electricity by wave force comprises the air turbine and the generator that is driven by this air turbine that are arranged in the runner envelope, this generator is positioned on this air turbine, has an airtight Dynamo Room, the rotor shaft of this generator vertically stretches out this Dynamo Room and fixedlys connected with the wheel hub of this air turbine, between this Dynamo Room and this air turbine, be provided with a confined air air chamber that contains this rotor shaft, between this rotor shaft and the Dynamo Room and the passage that all leaves the air free flow between this rotor shaft and this air chamber, when seawater immerses this air chamber, air in this Dynamo Room and this air chamber is closed, form gas-liquid interface in air chamber, its seal action is recently realizing by effective cavity volume (being the effective volume of air chamber) between the control effective cavity volume of generator inner chamber and turbine runner and the generator.If the effective cavity volume of generator inner chamber is V
I, the air chamber effective volume is V
II, both sums are V
0Before seawater was invaded, pressure was P
1, total volume is V
0, after seawater was invaded, pressure was P
2, total volume becomes V
2Be similar to and regard isothermal compression as, P is then arranged
1V
0=P
2V
2At P
2The time, the condition that seawater does not enter generator cavity is V
II/ V
I＞(P
2-P
1)/P
1, obviously, V
IIBig more, V
IMore little, sealing is just reliable more.We are with increasing V
IIWith minimizing V
IGuarantee sealing, increase V
IIConcrete measure have: increase the hub diameter; Increase the generator lower end surface to the distance between the turbine runner cover plate; The volume that part takies between minimizing generator and the turbine runner etc.Reduce V
IConcrete measure have: reduce the space at generator unit stator two ends, available in case of necessity heat-resisting insulating resin is filled with whole stator cavity (allowing to exceed with the generator temperature rise); Reduce the space of two ends of rotor, as the space that takes two ends of rotor with suitable bearing gland as far as possible etc.When seawater is invaded, can get up air seal, must guarantee stator lead-out wire, the generator strict tightness between end cap flange, generator lower end surface and the air chamber up and down, can adopt the sealing of O RunddichtringO usually.Between air chamber lower end surface and the turbine runner cover plate is clearance seal, prevents that at ordinary times seawater is splashed into, and easily makes seal ring, motor cavity form enclosed cavity when seawater is invaded.Also gapped sealing between axle sleeve below the bearing and the generator lower end surface can prevent further that seawater is splashed into bearing, improves sealing reliability.
The pneumatic type apparatus for generating electricity by wave force that adopts the aeroseal structure is recently realized seal action by what control effective cavity volume of generator inner chamber and air chamber effective volume, the part that does not contact with rotating shaft, therefore not only has the good advantage of airtight quality, but also have the advantage that power consumption is little, do not have wearing and tearing, Maintenance free management, life-span length, enlarged application area.
Accompanying drawing one is the structure diagram of the pneumatic type apparatus for generating electricity by wave force of employing aeroseal structure.
(1) protective cap, (2) rectifier and controller, (3) AC permanent-magnetic generator, (4) air turbine, (5) runner envelope, (6) air chamber.
Specify below by embodiment.
Embodiment: a kind of pneumatic type apparatus for generating electricity by wave force that adopts the aeroseal structure, 200 millimeters of its air turbine diameter phi, 120 millimeters of hub diameter phi.Air chamber effective volume V
IIIt is 148.5 cubic centimetres, adopt the sealing of RUBBER O RunddichtringO between air chamber upper-end surface and the generator lower end surface, guarantee air chamber except that being communicated with the monolateral 0.15 millimeter radial clearance of Lower shaft sleeve with the generator inner chamber and with the monolateral 0.3 millimeter radial clearance of turbine hub, 1.2 millimeters of turbine runner cover plate axial clearances and the turbine runner channel connection, all the other realize tightness.Adopt the sealing of RUBBER O RunddichtringO about the generator between two end cap and the generator unit stator shell flange face, adopt the SEALING FITTING of band RUBBER O RunddichtringO between generator lighting outlet and the stator case, guarantee the generator inner chamber except that Lower shaft sleeve is sentenced monolateral 0.15 millimeter radial clearance and air chamber is communicated with, all the other realize tightness.The space at staor winding two ends dwindles as far as possible, and the space between rotor magnetic steel and the metal (upper occupies as far as possible with high thick bearing gland.Generator inner chamber effective volume V
IIt is 183.7 cubic centimetres.When this pneumatic type apparatus for generating electricity by wave force is in seawater under the plumbness, the critical submergence depth that seawater can be immersed in lower bearing is 8 meters.When the seawater depth of immersion was 5 meters, the distance of gas-liquid interface from the generator stand lower end surface still had 4.8 millimeters.
Claims (3)
1, a kind of pneumatic type apparatus for generating electricity by wave force, comprise an air turbine and a generator that drives by this air turbine that is arranged in the runner envelope, this generator is positioned on this air turbine, has an airtight Dynamo Room, the rotor shaft of this generator vertically stretches out this Dynamo Room and fixedlys connected with the wheel hub of this air turbine, it is characterized in that between this Dynamo Room and this air turbine, being provided with a confined air air chamber that contains this rotor shaft, between this rotor shaft and the Dynamo Room and the passage that all leaves the air free flow between this rotor shaft and this air chamber, when seawater immerses this air chamber, air in this Dynamo Room and this air chamber is closed, form gas-liquid interface in air chamber, this Dynamo Room and this air chamber satisfy following relation: V
II/ V
I＞(P
2-P
1)/P
1, V wherein
1Be the effective cavity volume of Dynamo Room, V
IIBe air chamber effective volume, P
1, P
2Be respectively seawater and immerse pressure in air chamber front and back air chamber and the Dynamo Room.
2, apparatus for generating electricity by wave force according to claim 1 is characterized in that described air chamber has a lower end surface, and described air turbine has a runner cover plate, is provided with clearance seal between above-mentioned lower end surface and runner cover plate.
3, apparatus for generating electricity by wave force according to claim 2 is characterized in that being provided with clearance seal between described rotor shaft and described lower end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89107867A CN1015397B (en) | 1989-10-10 | 1989-10-10 | Pneumatic wave power device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89107867A CN1015397B (en) | 1989-10-10 | 1989-10-10 | Pneumatic wave power device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1050922A CN1050922A (en) | 1991-04-24 |
| CN1015397B true CN1015397B (en) | 1992-02-05 |
Family
ID=4857372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89107867A Expired CN1015397B (en) | 1989-10-10 | 1989-10-10 | Pneumatic wave power device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015397B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1584730B1 (en) * | 2004-02-20 | 2010-09-08 | SUSPA Holding GmbH | Damper with elastic guide- / damping unit |
| CN101201039B (en) * | 2006-12-14 | 2010-06-23 | 张庆玉 | Ocean wave and atmosphere dual-power vacuum turbine generation platform device |
| CN110966134A (en) * | 2019-11-15 | 2020-04-07 | 中国科学院广州能源研究所 | Floating oscillation water column type wave power generation device |
-
1989
- 1989-10-10 CN CN89107867A patent/CN1015397B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1050922A (en) | 1991-04-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |