CN104895752A - Novel ocean thermal energy utilization device - Google Patents

Novel ocean thermal energy utilization device Download PDF

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Publication number
CN104895752A
CN104895752A CN201510257556.3A CN201510257556A CN104895752A CN 104895752 A CN104895752 A CN 104895752A CN 201510257556 A CN201510257556 A CN 201510257556A CN 104895752 A CN104895752 A CN 104895752A
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CN
China
Prior art keywords
temperature
thermal energy
constant voltage
sensitive expansion
ocean thermal
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Pending
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CN201510257556.3A
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Chinese (zh)
Inventor
黄闯
罗凯
李代金
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Northwestern Polytechnical University
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Northwestern Polytechnical University
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Priority to CN201510257556.3A priority Critical patent/CN104895752A/en
Publication of CN104895752A publication Critical patent/CN104895752A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/30Energy from the sea, e.g. using wave energy or salinity gradient

Abstract

The invention discloses a novel ocean thermal energy utilization device, and relates to the technical field of ocean energy application. The ocean thermal energy utilization device comprises a constant pressure mechanism, a co-pole piston, a thermosensitive expansion mechanism and a limit self-locking mechanism, the constant pressure mechanism is fixedly connected with the thermosensitive expansion mechanism, and two ends of the co-pole piston with different sectional areas are matched with a constant pressure cavity and a small piston cylinder in a thermosensitive expansion cavity respectively. By the aid of heat expansion and cold contraction properties of working media and constant pressure properties of a two-phase region, the water discharge of the device is reduced along with temperature rise, and vice versa. The ocean thermal energy utilization device is driven by ocean thermal energy to automatically move in a floating and sinking manner. The gravity center of the device is close to the constant pressure cavity at a sinking stage and close to the thermosensitive expansion cavity at a floating stage by the aid of a limit self-locking mechanism, and the device constantly runs under driving of maximum positive buoyancy and genitive buoyancy. The ocean thermal energy utilization device is simple in structure, the ocean thermal energy is converted into mechanical energy, and ocean thermal energy utilization efficiency is improved.

Description

A kind of novel sea thermal gradient energy utilized device
Technical field
The present invention relates to marine energy applied technical field, specifically, relate to a kind of novel sea thermal gradient energy utilized device.
Background technique
At present, energy crisis and environmental pollution problem increasingly serious, the development and utilization of new energy especially renewable energy sources, clean energy resource becomes the hot issue of society.Thermal gradient energy there is the most a kind of clean energy resource in marine energy, and in sea surface and 300 ~ 500 meters of depths, temperature difference of seawater is 15 ~ 25K; As can be seen here, although ocean thermal energy enormous amount, energy grade is not high.The traditional Land use systems of ocean thermal energy gets deep sea water and surface seawater respectively as low-temperature receiver and thermal source, drive low temperature Rankine cycle acting, which principle is feasible, but efficiency is lower, cost is higher, equipment is complicated and engineering practice difficulty is comparatively large, therefore there is no popularization so far.
One " method utilizing ocean thermal energy to generate electricity and device " is disclosed in patent of invention 2011110147353.0, it utilizes top layer high temperature seawater heating low boiling working fluid to make it evaporation gasification and the weary gas of deep low-temperature cooled with seawater makes it liquefaction, formation closed cycle pushing turbine like this is done manual work, this Conventional marine thermal gradient energy Land use systems, builds up in the U.S., the existing similar power station of France.This invention ocean thermal energy Land use systems is often used for large-scale power station, and equipment is complicated, cost is high, be difficult to popularization.
Ocean thermal energy conversion device needs complicated main equipment, comprises the pipeline of the long needs insulation of hundreds of rice and pressurize, large-sized sea water pump, a large amount of expensive cryogenic fluid.But ocean thermal energy grade is very poor, cost of electricity-generating relative to thermoelectricity, water power, nuclear power even photoelectricity all without any advantage.For this reason, how low cost, high efficiencyly utilize ocean thermal energy, even change conventional generating thinking, utilize ocean thermal gradients Direct driver aircraft to become the focus of current concern.
Summary of the invention
In order to avoid the deficiency that prior art exists, overcome that its complex structure, cost are high, the problem of income weak effect, the present invention proposes a kind of novel sea thermal gradient energy utilized device.Ocean thermal energy is changed into mechanical energy by cryogenic fluid and is directly used in driving underwater glider by this device, and structure is simple, Be very effective.
The technical solution adopted for the present invention to solve the technical problems is: comprise constant pressure mechanism, altogether bar piston, temperature-sensitive expansion mechanism, limit self mechanism, be characterized in, constant pressure mechanism and temperature-sensitive expansion mechanism are connected, and bar piston two ends coordinate with the small piston cylinder in constant voltage cavity and temperature-sensitive expansion chamber respectively altogether;
Described constant pressure mechanism comprises combined valve, end casing, constant voltage cavity, described constant voltage cavity is columnar structured, one end has adpting flange and connecting plate to be connected, the constant voltage cavity the other end is connected with end casing, end casing is provided with combined valve, and constant voltage cavity inner wall circumference has step, and constant voltage cavity wall has permeable hole, limit self mechanism is positioned on constant voltage cavity wall, and relative with permeable hole;
Described temperature-sensitive expansion mechanism comprises connecting plate, gas charging valve, temperature-sensitive expansion chamber, small piston cylinder, cavity end plate, connecting plate is positioned at temperature-sensitive expansion chamber one end, and be connected with temperature-sensitive expansion chamber, there is through hole at connecting plate center, gas charging valve is arranged on connecting plate, and cavity end plate and the temperature-sensitive expansion chamber the other end are connected, and small piston cylinder is positioned at temperature-sensitive expansion chamber, small piston cylinder is fixed on connecting plate by end adpting flange, and the small piston cylinder the other end communicates with temperature-sensitive expansion chamber;
Described bar piston is altogether made up of piston, small piston, U-shaped link, left cross pin, right cross pin, piston coordinates with constant voltage cavity, piston rod there are the first restraining groove and the second restraining groove respectively near two ends circumference, there is the first U-groove bevel piston rod one end, piston rod is connected by left cross pin with U-shaped link through connecting plate, small piston side has the second U-groove bevel to be connected by right cross pin with the other end of U-shaped link, and small piston coordinates with small piston cylinder;
Described limit self mechanism comprises jacking block, spring, threaded pipe, regulating block, has screw thread inside and outside threaded pipe tube wall, and regulating block is positioned at threaded pipe inner bottom part, spring is between jacking block and regulating block, jacking block and the first restraining groove, the second restraining groove coordinates, and realizes spacing and self-locking by compressing jacking block.
Described connecting plate and constant voltage cavity and small piston cylinder are coaxially installed.
Radial seal is realized by O type circle between each link.
Temperature-sensitive expansion chamber and constant voltage cavity adopt stainless steel material, and cavity wall carries out isothermal holding.
Beneficial effect
A kind of novel sea thermal gradient energy utilized device that the present invention proposes, comprise by constant pressure mechanism, altogether bar piston, temperature-sensitive expansion mechanism, limit self mechanism, constant pressure mechanism and temperature-sensitive expansion mechanism are connected, and coordinated respectively install by the common bar piston two ends that sectional area is different with the small piston cylinder in constant voltage cavity and temperature-sensitive expansion chamber; Use the constant-voltage characteristic of expand with heat and contract with cold characteristic and the two-phase section of working medium, the water displacement of implement device reduces with the rising of temperature, and vice versa.Surface seawater has the temperature difference of 20K compared with deep sea water, and device realizes automatic porpoising under the driving of ocean thermal gradients.Make device sink stage center of gravity near constant voltage chamber by limit self mechanism, the stage center of gravity that floats is near temperature-sensitive expansion chamber, and device is in maximum positive buoyancy all the time, negative buoyancy drives lower operation.Ocean thermal energy utilized device structure is simple, ocean thermal energy is changed into the efficiency that mechanical energy improves ocean thermal energy utilization.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, a kind of novel sea thermal gradient energy of the present invention utilized device is described in further detail.
Fig. 1 is ocean thermal energy utilized device structural representation of the present invention.
Fig. 2 is limit self mechanism of the present invention and is total to bar piston structure figure.
Fig. 3 is bar piston and U-shaped link schematic diagram altogether of the present invention.
Fig. 4 is the underwater glider based on the present invention's design.
In figure:
1. the combined valve 2. end casing 3. constant voltage cavity 4. constant voltage chamber 5. permeable hole 6. gas charging valve 7. connecting plate 8. piston 9. temperature-sensitive expansion chamber 10. small piston cylinder 11. temperature-sensitive expansion chamber 12. cavity end plate 13. limit self mechanism 14. first restraining groove 15. jacking block 16. second restraining groove 17.U shape link 18. left cross pin 20. of small piston 19. right cross pin 21. regulating block 22. spring 23. threaded pipe 24. first U-groove bevel 25. second U-groove bevel 26. underwater glider 27. ocean thermal energy utilized device
Embodiment
The present embodiment is a kind of novel sea thermal gradient energy utilized device.
Consult Fig. 1, Fig. 2, Fig. 3, the present embodiment ocean thermal energy utilized device is made up of constant pressure mechanism, altogether bar piston, temperature-sensitive expansion mechanism, limit self mechanism, constant pressure mechanism is fixedly connected with temperature-sensitive expansion mechanism, and bar piston two ends coordinate with the small piston cylinder in constant voltage cavity and temperature-sensitive expansion chamber respectively altogether.Fill in constant voltage chamber 4 that two-phase section is wider, molecular weight is comparatively large, normal-temperature liquefaction pressure range in the working medium of 45 ~ 55Mpa, in constant voltage chamber 4, working medium is in two-phase section, pressure remained steady; Fill the gas that molecular weight is comparatively large, liquefaction pressure is higher in temperature-sensitive expansion chamber 11, peripheral wall surface adopts copper or the easy heat-conducting metal material of aluminium, and in temperature-sensitive expansion chamber 11, working medium is always gaseous state, and pressure changes with ambient temperature and changes.
Constant pressure mechanism comprises combined valve 1, end casing 2, constant voltage cavity 3, constant voltage cavity 3 is columnar structured, one end has adpting flange to be fixedly connected with connecting plate 7, constant voltage cavity 3 the other end is connected with end casing 2, end casing 2 is provided with combined valve 1, constant voltage cavity 3 inwall circumference has step for the stroke of limited piston 8; Constant voltage cavity 3 sidewall has permeable hole 5, and seawater is injected by permeable hole 5 and flows out; Limit self mechanism 13 is arranged on constant voltage cavity 3 sidewall relative with permeable hole 5, realizes radial seal between each connected element by O RunddichtringO.Temperature-sensitive expansion mechanism comprises connecting plate 7, gas charging valve 6, temperature-sensitive expansion chamber 9, small piston cylinder 10, cavity end plate 12, connecting plate 17 is arranged on the end of temperature-sensitive expansion chamber 9, and be connected with temperature-sensitive expansion chamber 9, cavity end plate 12 is fixedly connected with temperature-sensitive expansion chamber 9 the other end, and joint adopts O RunddichtringO to realize radial seal; Small piston cylinder 10 is arranged in temperature-sensitive expansion chamber 9, and small piston cylinder 10 one end has adpting flange to be fixedly connected with connecting plate 7, and small piston cylinder 10 the other end communicates with temperature-sensitive expansion chamber 11, and gas charging valve 6 is arranged on connecting plate 7 and is connected with temperature-sensitive expansion chamber.Connecting plate 7 is disc structure, and connecting plate 7 center Circularhole diameter is greater than small piston 18 diameter, is adopting seam to locate, for ensureing the coaxality between constant voltage cavity and small piston cylinder with constant voltage cavity 3 and small piston cylinder 10 end flange cooperation place.Bar piston is made up of piston 8, small piston 18 and U-shaped link 17, left cross pin 19, right cross pin 20 altogether, piston 8 coordinates with constant voltage cavity 3, piston rod is respectively equipped with the first restraining groove 14 and the second restraining groove 16 near two ends circumference, there is the first U-groove bevel 24 piston rod end, and piston rod is connected by left cross pin 19 with U-shaped link 17 through connecting plate 7 center circular hole; Small piston 18 side has the second U-groove bevel 25, and the second U-groove bevel 25 of small piston 18 is connected by right cross pin 20 with the other end of U-shaped link 17, and small piston 18 coordinates with small piston cylinder 10.Limit self mechanism 13 comprises jacking block 15, spring 22, threaded pipe 23, regulating block 21, limit self mechanism is arranged on constant voltage cavity 3 sidewall, screw thread is had inside and outside threaded pipe 23 tube wall, regulating block 21 is arranged on threaded pipe 23 inner bottom part, spring 22 between jacking block 15 and regulating block 21 for compressing jacking block 15, jacking block 15 and the first restraining groove 14, second restraining groove 16 coordinate, and realize spacing and self-locking by compressing jacking block 15.Regulating block 21 position is adjustable, by rotating the unlatching dynamics of regulating block adjustment spring 22 decrement and then change limit self mechanism 13.
When ocean thermal energy utilized device is positioned at sea surface, water temperature is higher, and temperature-sensitive expansion chamber 11 internal pressure rises to the highest, and constant voltage chamber 4 internal pressure is constant, limit self mechanism 13 opens, and bar piston is moved to the left altogether, and jacking block 15 snaps in the second restraining groove 16 and self-locking again.Area due to piston 8 is greater than the area of small piston 18, and the water displacement of device reduces and seawater flows in permeable hole 5, and device buoyancy is less than gravity and sinks.When ocean thermal energy utilized device is positioned at benthos, quick expansion chamber 11 internal pressure is down to minimum, and constant voltage chamber 4 internal pressure is constant, limit self mechanism 13 opens, bar piston moves right altogether, jacking block 15 snaps in the first restraining groove 16 and self-locking again, and now, device buoyancy is greater than gravity and automatically floats.Device realizes floating, heavy motion under the driving of ocean thermal energy.
Fill R134a cryogenic fluid to the constant voltage chamber 4 of ocean thermal energy utilized device, fill air test temperature-sensitive expansion chamber, in test, under the temperature difference of 60K drives, bar piston is moved altogether, and device carries out work.Ocean thermal energy utilized device each component key dimension is as follows: piston 8 diameter is 70mm, small piston 18 diameter is 40mm, constant voltage cavity 3 external diameter is 86mm, length is 150mm, temperature-sensitive expansion chamber 9 external diameter is 200mm, length is 200mm, wall thickness is 5mm, and small piston cylinder 10 external diameter is 50mm, length is 130mm; Bar piston length is 160mm altogether.
Embodiment
The present embodiment is the underwater glider based on ocean thermal energy utilized device.
As shown in Figure 4, the present embodiment underwater glider is made up of glider 26 and four ocean thermal energy utilized devices 27.The constant voltage chamber 4 of ocean thermal energy utilized device is front, temperature-sensitive expansion chamber 11 is rear, when glider 26 is positioned at seawater surface, temperature-sensitive expansion chamber 11 volume of all ocean thermal energy utilized devices 27 is maximum, water displacement is minimum, center of gravity reach, and glider 26 is bowed with negative angle of attack sinking and slided forward.When glider is positioned at the certain deep layer of seawater, temperature-sensitive expansion chamber 11 volume of all ocean thermal energy utilized devices 27 is minimum, water displacement is maximum, move after center of gravity, and glider 26 comes back and to float with positive incidence and to slide forward.The underwater glider being core with ocean thermal energy utilized device 27 can realize stable continuation of the journey.

Claims (4)

1. a novel sea thermal gradient energy utilized device, comprise constant pressure mechanism, altogether bar piston, temperature-sensitive expansion mechanism, limit self mechanism, it is characterized in that: constant pressure mechanism and temperature-sensitive expansion mechanism are connected, bar piston two ends coordinate with the small piston cylinder in constant voltage cavity and temperature-sensitive expansion chamber respectively altogether; Described constant pressure mechanism comprises combined valve, end casing, constant voltage cavity, described constant voltage cavity is columnar structured, one end has adpting flange and connecting plate to be connected, the constant voltage cavity the other end is connected with end casing, end casing is provided with combined valve, and constant voltage cavity inner wall circumference has step, and constant voltage cavity wall has permeable hole, limit self mechanism is positioned on constant voltage cavity wall, and relative with permeable hole; Described temperature-sensitive expansion mechanism comprises connecting plate, gas charging valve, temperature-sensitive expansion chamber, small piston cylinder, cavity end plate, connecting plate is positioned at temperature-sensitive expansion chamber one end, and be connected with temperature-sensitive expansion chamber, there is through hole at connecting plate center, gas charging valve is arranged on connecting plate, and cavity end plate and the temperature-sensitive expansion chamber the other end are connected, and small piston cylinder is positioned at temperature-sensitive expansion chamber, small piston cylinder is fixed on connecting plate by end adpting flange, and the small piston cylinder the other end communicates with temperature-sensitive expansion chamber; Described bar piston is altogether made up of piston, small piston, U-shaped link, left cross pin, right cross pin, piston coordinates with constant voltage cavity, piston rod there are the first restraining groove and the second restraining groove respectively near two ends circumference, there is the first U-groove bevel piston rod one end, piston rod is connected by left cross pin with U-shaped link through connecting plate, small piston side has the second U-groove bevel to be connected by right cross pin with the other end of U-shaped link, and small piston coordinates with small piston cylinder; Described limit self mechanism comprises jacking block, spring, threaded pipe, regulating block, has screw thread inside and outside threaded pipe tube wall, and regulating block is positioned at threaded pipe inner bottom part, spring is between jacking block and regulating block, jacking block and the first restraining groove, the second restraining groove coordinates, and realizes spacing and self-locking by compressing jacking block.
2. ocean thermal energy utilized device according to claim 1, is characterized in that: described connecting plate and constant voltage cavity and small piston cylinder are coaxially installed.
3. ocean thermal energy utilized device according to claim 1, is characterized in that: realize radial seal by O type circle between each link.
4. ocean thermal energy utilized device according to claim 1, is characterized in that: temperature-sensitive expansion chamber and constant voltage cavity adopt stainless steel material, and cavity wall carries out isothermal holding.
CN201510257556.3A 2015-05-20 2015-05-20 Novel ocean thermal energy utilization device Pending CN104895752A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110054081A (en) * 2019-05-22 2019-07-26 中国船舶科学研究中心(中国船舶重工集团公司第七0二研究所) Lift by crane the hook with buoyancy adjustment function in deep-sea
CN110979609A (en) * 2019-12-16 2020-04-10 西北工业大学 Temperature difference energy driving device of underwater glider

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CN1644451A (en) * 2005-01-25 2005-07-27 天津大学 Gliding movement underwater robot driven by temperature differential energy
CN2785976Y (en) * 2004-12-09 2006-06-07 上海交通大学 Glide type submarine vehicle by utilizing sea temperature difference energy to drive alkane engine
WO2009110949A1 (en) * 2008-03-05 2009-09-11 Benik Nicholas A Liquid displacer engine
JP2009270548A (en) * 2008-05-12 2009-11-19 Estir:Kk Temperature difference power generator
CN102661328A (en) * 2012-05-12 2012-09-12 吉林大学 Rolling spline universal joint pin universal coupler

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020159892A1 (en) * 2001-03-28 2002-10-31 Zaptcioglu Fikret M. Ocean water pressure energy generation system
US20030108431A1 (en) * 2001-03-28 2003-06-12 Zabtcioglu Fikret Mehmet Water pressure multiplier energy generation system
CN1618695A (en) * 2004-12-09 2005-05-25 上海交通大学 Linkaged piston type under water glide carrier capable of being driven in sea
CN2785976Y (en) * 2004-12-09 2006-06-07 上海交通大学 Glide type submarine vehicle by utilizing sea temperature difference energy to drive alkane engine
CN1644451A (en) * 2005-01-25 2005-07-27 天津大学 Gliding movement underwater robot driven by temperature differential energy
WO2009110949A1 (en) * 2008-03-05 2009-09-11 Benik Nicholas A Liquid displacer engine
JP2009270548A (en) * 2008-05-12 2009-11-19 Estir:Kk Temperature difference power generator
CN102661328A (en) * 2012-05-12 2012-09-12 吉林大学 Rolling spline universal joint pin universal coupler

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110054081A (en) * 2019-05-22 2019-07-26 中国船舶科学研究中心(中国船舶重工集团公司第七0二研究所) Lift by crane the hook with buoyancy adjustment function in deep-sea
CN110054081B (en) * 2019-05-22 2020-06-12 中国船舶科学研究中心(中国船舶重工集团公司第七0二研究所) Lifting hook with buoyancy adjusting function for deep sea lifting
CN110979609A (en) * 2019-12-16 2020-04-10 西北工业大学 Temperature difference energy driving device of underwater glider
CN110979609B (en) * 2019-12-16 2022-04-15 西北工业大学 Temperature difference energy driving device of underwater glider

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Application publication date: 20150909