CN102472122A - Waste heat recovery turbine system - Google Patents
Waste heat recovery turbine system Download PDFInfo
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- CN102472122A CN102472122A CN2010800352180A CN201080035218A CN102472122A CN 102472122 A CN102472122 A CN 102472122A CN 2010800352180 A CN2010800352180 A CN 2010800352180A CN 201080035218 A CN201080035218 A CN 201080035218A CN 102472122 A CN102472122 A CN 102472122A
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- Prior art keywords
- working medium
- heat recovery
- turbine
- medium
- bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
Abstract
A waste heat recovery turbine system comprising a turbine (13) which is driven by the action of a working medium (M), an evaporator (16) which can vaporize the working medium (M) by means of heat exchange with a waste heat discharged from an external heat source (15) and supply the vaporized working medium (M) to the turbine (13), and a condenser (17) which can liquefy the working medium (M) that has passed through the turbine (13), wherein the working medium (M) contains a compound selected from the group consisting of a hydrofluoroether (HFE) and a fluoride alcohol as the main medium.
Description
Technical field
The present invention relates to replacement freon (Off ロ Application) with the superior feature of environmental protection and the property handled heat recovery turbine system as the working medium work of main medium.
Background technique
In recent years; The waste heat less than 100 ℃ low warm water discharge that produces in the manufacture process with Iron And Steel Plant and ceramic industry etc. is the heat recovery turbine system of thermal source; Make lower boiling medium beyond the water as working medium, seek the discharging of saving energy consumption and reducing greenhouse gases, caused people's attention.Such turbine system uses lowlyer than ammonia, hydrocarbon, the water boiling point of natural medium, replaces the chloro-fluoro-hydrocarbons (CFC as freon; Network ロ ロ Off Le オ ロ カ ー ボ Application), HCFC (HCFC; Ha イ De ロ Network ロ ロ Off Le オ ロ カ ー ボ Application) and hydrogen fluorohydrocarbon (HFC; Ha イ De ロ Off Le オ ロ カ ー ボ Application) etc. as working medium (reference example such as patent documentation 1).
Patent documentation 1: TOHKEMY 2002-161716.
Summary of the invention
The problem that invention solves
But, in the above-mentioned working medium, as the ammonia of natural medium and hydrocarbon since its toxicity and combustibility have any problem in the processing.Again, as the chloro-fluoro-hydrocarbons (CFC) of synthetic medium and HCFC (HCFC) owing to can damage to ozonosphere, feature of environmental protection problem such as global warming coefficient (GWP) is big, thereby it uses existing problems.Hydrogen fluorohydrocarbon (HFC) can not damage the ozone layer though its ozone layer destroying coefficient (ODP) is 0, and the global warming coefficient is big slightly.Therefore, hope to have ozone layer destroying coefficient (ODP) be 0 and also the global warming coefficient also little, the medium with superior feature of environmental protection.
Therefore, inventor of the present invention studies with keen determination, and the result has at first found hydrogen fluorine ether (HFE; Ha イ De ロ Off Le オ ロ エ ー テ Le).This HFE has Sumitomo 3M company to be called ノ ベ ッ Network 7000 product solds etc. with commodity, and the washing agent as semiconductor and electronic component uses specially, has the characteristic that is fit to these purposes.The heat recovery turbine system belongs to different fields fully with the manufacturing of semiconductor and electronic component, but from boiling point, latent heat of vaporization, consideration such as the property handled, toxicity in addition, finds that HFE is to the also suitable medium of heat recovery turbine system.Though the HFE poor is found to pass through mixed base grease therein, gives lubricity easily.And discovery has the also suitable heat recovery turbine system of fluorinated alohol near the characteristic of HFE at aspects such as boiling point and latent heat of vaporization.
The present invention is based on that above-mentioned research makes, and its purpose is, provides superior with the feature of environmental protection, and good the containing of the property handled replaces the heat recovery turbine system of freon as the working medium work of main medium.
The means of dealing with problems
To achieve these goals; The condenser that heat recovery turbine system of the present invention possesses the turbine that driven by working medium, utilize the heat exchange of carrying out with waste heat from external heat source to make is supplied to the vaporizer of above-mentioned turbine after the above-mentioned working medium vaporized and the working medium through above-mentioned turbine is liquefied, above-mentioned working medium comprise the compound from a group of hydrogen fluorine ether (HFE) and fluorinated alohol, selected as main medium.
If adopt this structure; Then because the boiling point of compound under normal pressure of from a group of HFE and 3FE, selecting is generally lower; Contain its working medium, easily vaporized by means of the heat exchange of carrying out with waste heat at the vaporizer place from thermal source as main medium.And the ozone layer destroying coefficient of these compounds is 0, and the global warming coefficient is also little, and therefore the feature of environmental protection is superior to environmental pressure is little, and because of the property handled a little less than the toxicity good.
In the present invention, above-mentioned main medium preferably under the normal pressure boiling point (being meant the boiling point under the normal pressure under the situation hereinafter to be referred as " boiling point ") at the HFE of-24～60 ℃ of scopes.Like this, therefore the boiling point of above-mentioned main medium only just can easily make main medium vaporized with the common waste heat level that reclaims from thermal source in-24～60 ℃ of scopes.
In the present invention, preferably as the boiling point under the normal pressure of the HFE of above-mentioned main medium above 30 ℃.Like this, the boiling point of HFE is in case surpass 30 ℃, in condenser, just can easily make its liquefaction with the water of normal temperature (about 15～30 ℃), so system can simplify.
In the present invention, preferably above-mentioned main medium is that carbon number is 2～4 HFE.The carbon number of HFE is 2～4 o'clock, and the boiling point under the normal pressure is lower than water, is under the situation of warm water at the waste heat from thermal source therefore, through carrying out heat exchange with this warm water, can easily make above-mentioned HFE vaporized.As such HFE, for example C is arranged
3F
7OCH
3(HFE7000), C
4F
9OCH
3(HFE7100), C
4F
9OC
2H
5(HFE7200) and C
6F
13OCH
3(HFE7300).HFE also can be CHF
2-CF
2-O-CH
2-CF
3(HFE-S7).
In the present invention, best above-mentioned working medium is in above-mentioned main medium, to mix with this main medium to have the lubricant oil of intermiscibility, the working medium of for example fluorocarbon oil.So,, also can utilize the lubricant oil that mixes in the main medium to keep lubricity, therefore be suitable as the turbine of rotating machinery even main medium itself does not possess under the situation of lubricity.Again; Lubricant oil and main medium that fluorocarbon oil constitutes have intermiscibility; Therefore the main medium of working medium is not easy to separate with lubricant oil in the liquid phase of vaporizer; Taking out concentration of lubricating oil from the arbitrary position, bottom of the liquid phase of vaporizer is certain working medium, can be used in to make the lubricated object part of turbine for example lubricated.
In the present invention, preferably also possesses the supply passage that the working medium that contains lubricant oil is supplied to bearing.By means of this; Working medium with lubricity is used to drive turbine, on the other hand, owing to the bearing of turbine is directly supplied with this working medium from above-mentioned supply passage; Therefore do not need to be provided with separately the means of special supplying lubricating oil, can make bearing obtain good lubricating.
In the present invention; Preferably possess the lubrication system of the bearing supplying lubricating oil of above-mentioned turbine and the sealed department that will between the above-mentioned bearing of the running shaft periphery of above-mentioned turbine and turbine, seal, above-mentioned lubrication system has the ejection section that lubricant oil is sprayed to above-mentioned bearing.Through forming such structure, can be from ejection section to bearing with a large amount of forced jet lubricant oil of pressurized state, therefore must high speed rotating and the bearing heating serious situation under, also can carry out effectively lubricating and cooling to bearing.Again, owing to sealed department is arranged with sealing between bearing and the turbine, lubricant oil can not leak to turbo-side, therefore can reclaim lubricant oil with high recovery rate, can avoid lubricant oil to sneak into the working medium of turbine simultaneously, avoids reducing the thermal efficiency of turbine.
In the present invention, preferably the bearing of above-mentioned turbine is that grease-enclosed grease lubrication profile shaft is held.So, just do not need the such subsidiary engine kind equipment of jet pump, as long as in the lubricating grease life span, maintenance does not just need repairing.
Above-mentioned purpose of the present invention, other purposes, characteristic and advantage can be recognized from the detailed description of the following preferred example that carries out with reference to accompanying drawing.
The effect of invention
If employing the present invention; Then because compound boiling point under normal pressure of from a group of HFE and fluorinated alohol, selecting is generally lower; Therefore comprise its working medium as main medium; Easy vaporized by means of the heat exchange of in vaporizer, carrying out with waste heat from thermal source, and it liquefies at condenser after through turbine easily.And the ozone layer destroying coefficient of these compounds is 0, and the global warming coefficient is also little, and therefore the feature of environmental protection is superior to environmental pressure is little, and because of the property handled a little less than the toxicity good.
Description of drawings
Fig. 1 is the summary construction diagram that the heat recovery turbine system of the present invention's the 1st example is shown;
Fig. 2 is the main medium that uses of the present invention and the characteristic comparison sheet of other media;
Fig. 3 is the summary construction diagram that the heat recovery turbine system of the present invention's the 2nd example is shown;
Fig. 4 is the longitudinal section that the details of ejection section is shown;
Fig. 5 is the summary construction diagram that the heat recovery turbine system of the present invention's the 3rd example is shown;
Fig. 6 is the longitudinal section of details that the bearing of Fig. 5 is shown.
Embodiment
Followingly preferred example of the present invention is elaborated with reference to accompanying drawing.Fig. 1 illustrates the schematic configuration of the heat recovery turbine system of the present invention's the 1st example.Heat recovery turbine system shown in this figure possesses the turbine generation unit U with generator 10 and the turbine 13 that drives this generator; On the medium channel 30 of the working medium M circulate that turbine 13 rotations are driven, be provided with fallig film vaporizer 16, condenser 17 and medium transport pump 18.
Vaporizer 16 carries out heat exchange with warm water through heat-transfer pipe 16a, just the waste heat with thermal source 15 carries out heat exchange, so that working medium M vaporized, the working medium M that becomes gas phase carries road 30a to be supplied to above-mentioned turbine generation unit U through gas phase media.On the vaporizer 16; Be provided with recycle pump 27 on the peripheral passage 29 that between the bottom that is configured to make vaporizer 16 and top, is communicated with; With the liquid phase working medium M that utilizes this recycle pump 27 to take out from the bottom of vaporizer 16;, be ejected into heat-transfer pipe 16a and go up to vaporizer 16 inner spray shapes ejections from the ejiction opening that is disposed at the inner injection pipe 26 of vaporizer 16 to promote heat exchange.
Working medium M after turbine 13 rotation of turbine generation unit U is driven reclaims road 30b through gas phase media and is sent to condenser 17.Condenser 17 forms the known structure that inside has the pipe arrangement of cooling medium C to pass through, and through cooling medium C the working medium M of gas phase is cooled off to make its liquefaction.
When the working medium M of liquefaction carries road 30c through liquid phase medium at condenser 17 places, after carrying the medium transport pump 18 that is provided with on the 30c of road to boost, be supplied to vaporizer 16 at this liquid phase medium.Utilize above-mentioned gas phase media to carry road 30a, gas phase media to reclaim road 30b and liquid phase medium conveying road 30c, form medium channel 30 as circulating path.
Below each bearing 19, be provided with oil groove 25.On the other hand; Form the supply passage 20 of 29 bifurcateds at the outlet side of above-mentioned recycle pump 27, will utilize the part of the liquid phase working medium M that recycle pump 27 takes out from the bottom of vaporizer 16 to be supplied to the oil groove 25 of each bearing 19 below from this supply passage 20 from the peripheral passage.Thereby, the working medium M of high pressure is supplied to bearing 19 from oil groove 25, successfully to be lubricated.Again, on above-mentioned supply passage 20, be provided with the decompressor 28 that throttle valve such as aperture or reduction valve constitute, make the part evaporation of liquid phase working medium M, improve concentration of lubricating oil, reduce the temperature of working medium M simultaneously by means of latent heat of vaporization by means of decompression.
Between each bearing 19 and the condenser 17, specifically, between the inlet of each oil groove 25 and above-mentioned condenser 17, through making from return path 23 connections of the return condensed device 17 of liquid phase working medium M of bearing 19 discharges.From the liquid phase working medium M of these return path 23 return condensed devices 17, in condenser 17, collaborate with the working medium M that reclaims road 30b through gas phase media.
The main medium of above-mentioned working medium M can adopt for example HFE (hydrogen fluorine ether), and just general formula is C
nH
2n+1-O-C
mH
2m+1Its part of H with the product of F displacement, or adopt fluorinated alohol, just C
nH
2n+1Its part of H beyond the OH of-OH is with the product of F displacement.
The main medium preferably number of carbon C is 2～4 HFE.Therefore the carbon number of HFE is 2～4 o'clock, and the boiling point under normal pressure is lower than water, even be the warm water below 100 ℃ from the waste heat of thermal source 15, also can easily make above-mentioned HFE vaporized through the heat exchange with this warm water.
The boiling point of above-mentioned main medium is preferably the scope at-24～60 ℃, more preferably above 30 ℃ and in the scope below 60 ℃.If boiling point below 60 ℃, then can utilize from the waste heat of the ratio lower temperature of thermal source 15 recovery and make main medium vaporized.If surpass 30 ℃, then can enough normal pressures (barometric pressure), the water of normal temperature (about 15～30 ℃) makes its condensation and liquefaction easily, thereby can seek the simplification of system.
Boiling point satisfies the HFE of-24～60 ℃ condition, and for example C is arranged
3F
7OCH
3(HFE7000) and CHF
2-CF
2-O-CH
2-CF
3As C
3F
7OCH
3(HFE7000) object lesson has the product of the commodity ノ ベ ッ Network 7000 (34 ℃ of boiling points) by name of Sumitomo 3M company, as CHF
2-CF
2-O-CH
2-CF
3Object lesson, have the commodity of product and Asahi Glass company of the commodity HFE-S7 by name of ダ イ キ Application Industrial Co., Ltd to be called the product of ア サ ヒ Network リ Application AE-3000 (56.7 ℃ of boiling points, ODP=0, GWP=870).Carbon number is 2 CF in addition
3OCH
3(HFE-143mc, boiling point-24 ℃), carbon number are 3 CF
3CF
2OCH
3(5.5 ℃ of HFE-245mc, boiling points) and CHF
2CF
2OCH
3(37.2 ℃ of HFE-254pc, boiling points), carbon number are 4 CHF
2CF
2OCH
2CF
3(56 ℃ of HFE-347pc-f, boiling points), (CF
3)
2CFOCH
3(29.4 ℃ of HFE-347mmy, boiling points) and CF
3CF
2CF
2OCH
3(34.2 ℃ of HFE-347mcc, boiling points).
In addition, even surpass 60 ℃ at the boiling point of main medium, and the number of carbon C is under 5～7 the situation, is higher than at the waste heat supply temperature from above-mentioned thermal source 15 under the situation of boiling point of main medium also can use.As so main medium, the C of 61 ℃ of boiling points is arranged
4F
9OCH
3(HFE7100), 76 ℃ C
4F
9OC
2H
5(HFE7200) and 98 ℃ C
6F
13OCH
3(HFE7300).
As main medium, as stated, also can use fluorinated alohol, for example preferred formula is C
nH
2n+1Its part of H beyond the OH of-OH is with the 3FE (3 fluorinated alohol) of F displacement.The boiling point of 3FE under normal pressure is 74 ℃, though have weak combustibility, ozone layer destroying coefficient ODP is 0, and GWP is also little for the global warming coefficient.
Like this; In the present invention, it is 0 that main medium adopts ozone layer destroying coefficient ODP, and global warming coefficient GWP is also little; Therefore the feature of environmental protection is superior to environmental pressure is little; And because of the good medium of the avirulent property handled, therefore make its vaporized easily, and make its liquefaction with condenser 17 easily through turbine 13 backs through the heat exchange of in vaporizer 16, carrying out with waste heat.
Here, with reference to dielectric property comparison sheet shown in Figure 2 to above-mentioned be that the reason that the medium of representative is suitable as the main medium of heat recovery turbine system describes with HFE (hydrogen fluorine ether).Fig. 2 illustration has CFC (chloro-fluoro-hydrocarbons), HCFC (HCFC), HFC (hydrogen fluorohydrocarbon), HFE and 3FE (3 fluorinated alohol).
Can know that from this characteristic comparison sheet its ozone layer destroying coefficient ODP=0 is all decomposed owing to the existence of oxygen in the ether compound in HFE7000～7300 in atmosphere; Therefore can not damage the ozone layer; And global warming coefficient GWP is also below 370, so the feature of environmental protection is superior, and avirulent.Thereby, can know that from overall merit it is excellent (being designated as ◎ or zero) as main medium, wherein therefore the HFE7000 boiling point is extremely excellent (being designated as ◎) on easy vaporized this point below 60 ℃.3FE, as stated, its ozone layer destroying coefficient ODP=0, global warming coefficient GWP=57, the feature of environmental protection is superior, but has weak combustibility, must be noted that during processing, so overall merit is than HFE low slightly (being designated as zero).By contrast, CFC, HCFC are on the feature of environmental protection and relatively poor on the toxicity (being designated as *).HFC is better on the feature of environmental protection, but toxic, so overall merit is than HFE low (being designated as △).
In addition, in comparison sheet, not having illustratively has, the same HFO (HF hydrocarbon for medium with superior feature of environmental protection with HFE; Ha イ De ロ Off Le オ ロ オ レ Off ィ Application), it also can be used as main medium use.As HFO, for example HFO-1234yf (chemical formula CF is arranged
3CF=CH
2).
Again, as the HFE of main medium use, though be that the greenhouse coefficient is little, the medium of the excellence that can not damage the ozone layer, its shortcoming is not have lubricity.Therefore in this example, in HFE, sneak into the lubricant oil that fluorocarbon oil constitutes, give working medium M with lubricity with this.
As the lubricant oil of sneaking in the main medium, have lubricant oil for example base oil or affix end a part or all with the paradigmatic structure of fluorine blockade with the fluorocarbon oil of following chemical formulation etc.
[Chemical formula 1]
Or.
[Chemical formula 2]
The former has the product of the commodity Network ラ イ ト ッ Network ス by name of for example E.I.Du Pont Company's manufacturing.This fluorocarbon oil is the main medium intermiscibility good product such with above-mentioned HFE, and main medium does not separate with fluorocarbon oil under liquid phase state.
The work of the heat recovery turbine system of structure describes to having as stated with reference to Fig. 1 below.From the warm water of thermal source 15 as the waste heat derivation; 15a imports to vaporizer 16 from the heated fluid supply passage; The heat exchange of working medium M in the vaporizer 16 through carrying out with the warm water that imports just receives from the heat of thermal source 15 and vaporized becomes the for example gas phase of the high pressure about 4 air pressure.On the other hand, lubricant oil is not easy evaporation, therefore the liquid phase working medium M of residual high concentration of lubricating oil in the bottom of vaporizer 16.
The working medium M that will become gas phase takes out from the top of vaporizer 16, carries road 30a to be supplied to a pair of turbine 13,13 of turbine generation unit U through gas phase media, and two turbines 13,13 are driven.By means of this, drive through running shaft 21 and the generator 10 that turbine 13 links and generate electricity.The working medium M that gives off energy at turbine 13 places reclaims road 30b through gas phase media and gets into condenser 17, obtains cooling off the back condensation through the heat exchange with cooling medium C.So the working medium M that becomes liquid phase carries road 30c through liquid phase medium, Returning evaporimeter 16 after boosting by means of medium transport pump 18.
On the other hand, the liquid phase working medium M that residual concentration of lubricating oil is high in the bottom of above-mentioned vaporizer 16 is supplied to the oil groove 25 of the bearing 19 of turbine generation unit U by means of supply passage 20.At this moment, decompressor 28 coolings of working medium M through being arranged at supply passage 20.On the supply passage 20 of this example, can be provided with cooler and replace decompressor 28, perhaps also can except decompressor 28, also be provided with cooler.The outlet side of 29 recycle pump 27 is supplied to the liquid phase working medium M of oil groove 25 from the peripheral passage; It is the high working medium of concentration of lubricating oil that contains a large amount of lubricant oil; When turbogenerator rotated, bearing 19 can often obtain good lubricating through the high liquid phase working medium M of this concentration of lubricating oil.Like this,, therefore there is no need a large amount of lubricant oil to be sneaked into working medium, therefore also can not hinder the heat transfer property of vaporizer 16 and condenser 17 for improving lubricity owing to can be lubricated bearing 19 by the high working medium M of concentration of lubricating oil.
As long as there is the working medium M of lubricated needed amount of bearing 19 just enough in the oil groove 25, rest parts is discharged to return path 23 from oil groove 25, returns above-mentioned condenser 17 from this return path 23.Thereby working medium M can not be discharged to outside the system surrounding enviroment are impacted, but in locking system, obtains recycle.Working medium M is by means of the intensification of bearing 19, and its part becomes gas phase, and in this case, the working medium M that liquid phase is mixed with gas phase gets into condenser 17 through return path 23.Therefore here, the inlet of condenser 17 is roughly normal pressure, can be from the oil groove 25 of high pressure a little to condenser 17 recovery operation medium M successfully.Particularly under the situation of this example; Different with the medium transport pump 18 of flow change; Recycle pump 27 is according to the liquid level in the vaporizer 16; Under the certain condition of flow, move, therefore have the supply passage 20 liquid phase working medium M that concentration of lubricating oil is dense that can go out to be supplied to the advantage of bearing 19 with stable amount by outlet bifurcated from this recycle pump 27.Can also make the downstream of return path 23 be not attached to the inlet of condenser 17, reclaim road 30b and be connected in medium.
Again; In this example; Through the decompressor 28 that is provided with on the supply passage 20, make the part evaporation of working medium M, the concentration of lubricating oil of working medium M is improved; And the temperature that causes of latent heat of vaporization descends and makes the oil body among the working medium M rise, and therefore can keep good lubricating property.
As stated, have the working medium M of lubricity, be used to drive turbine, on the other hand, owing to directly supply with this working medium M from the bearing 19 of 20 pairs of turbines 13 of above-mentioned supply passage, so bearing 19 obtains good lubricating.
Also have, though in above-mentioned example, drive generators 10 through turbine 13, the system of other loads of the pump that kind through turbine 13 driving arrangement classes also can be suitable for the present invention.
Fig. 3 illustrates the heat recovery turbine system of the present invention's the 2nd example.In the 2nd example, the part identical with the 1st example shown in Figure 1 is marked with identical symbol and omits its detailed description.In above-mentioned the 1st example; As shown in Figure 1; Possess the supply passage 20 that the working medium M that will sneak into lubricant oil L is supplied to the bearing 19 of turbine 13, and in the 2nd example of Fig. 3, use the working medium M that does not contain lubricant oil; And replace above-mentioned supply passage 20, the bearing 19 of turbine 13 is newly established the lubrication system 40 of storing lubricant oil L.This lubrication system 40 has the lubricating oil tank 41 of storing lubricant oil L, be transported to the jet pump 43 of ejection section 33 after being connected in this lubricating oil tank 41 and pressurizeing to the lubricant oil supply passage 42 between the ejection section 33 of bearing 19,19 jet lubrications oil L and with lubricant oil L.Return lubricating oil tank 41 to the lubricant oil L that bearing 19,19 sprays through return path 35 from ejection section 33, can reuse.
Fig. 4 illustrates the details of ejection section 33.As shown in the drawing, about paired bearing 19, be provided with the inner ring spacer 36 that is fixed in running shaft 21, the outer ring spacer 37 that is configured to be fixed in shell (Ha ウ ジ Application グ) H between 19, outer ring spacer 37 is provided with nozzle 38.This nozzle 38 has central streams inlet 38a and from the inflow entrance 38a bifurcated injection path 38b of bearing 19,19 to the left and right; The front end that sprays path 38b is towards the inner ring 19a of bearing 19 and the bearing space 19c between the 19b of outer ring, and 19c blows to lubricant oil L on the rolling element 19d through this bearing space.On shell H, form the upstream portion of return path 35 of downstream portion and lubricant oil L that lubricant oil L is supplied to the lubricant oil supply passage 42 of ejection section 33.Said nozzle 38 is provided with 1～2 for each bearing 19,19.
Between the bearing 19 and turbine 13 of the periphery of the running shaft 14 of turbine 13, be provided with both 19,13 sealed departments that seal 39, same, between the bearing 19 of the periphery of the rotor 11 of generator 10 (Fig. 3) and generator 10, also be provided with sealed department 39.Sealed department 39 by be fixed in shell H and and the outer circumferential face of running shaft 14 between form labyrinth sealing (ラ PVC リ Application ス シ ー Le) seal ring constitute.
Under the situation of this 2nd example, as shown in Figure 3, spray as high speed jet from ejection section 33 through lubricant oil supply passage 42 from the lubricant oil L of lubricating oil tank 41, bearing 19,19 is lubricated.Thereby, under necessary high speed rotating and bearing heating serious situation, also can carry out effectively lubricating, and can cool off bearing 19.Sealed department 39,39 is set in the both sides of bearing 19 again, and the lubricated lubricant oil L that can be used in bearing 19 so can not go out to turbine 13 1 sides and rotor 11 1 side leakages, can reclaim lubricant oil L with high recovery rate.And can avoid lubricant oil L to sneak into the working medium M of turbine 13, avoid reducing the thermal efficiency of turbine 13.
Fig. 5 illustrates the heat recovery turbine system of the present invention's the 3rd example.In the 3rd example, use the grease lubrication profile shaft of enclosing lubricating grease G to hold the bearing 19 that 19B replaces turbine 13.
Fig. 6 illustrates the details of bearing 19B.As shown in the drawing, this bearing 19B rotatably remains in rolling element 19Bd between bearing outer ring 19Ba and the bearing inner race 19Bb through retainer 19Bc, is provided with a pair of sealing plate 19Be, 19Be in the axial outside of above-mentioned retainer 19Bc.The groove that is provided with on the inner peripheral surface of the upper end of sealing plate 19Be and above-mentioned bearing outer ring 19Ba cooperates; The lower end of sealing plate 19Be is keeping the outer circumferential face of very little gap h near bearing inner race 19Bb on the degree that the rotation with the bearing inner race 19Bb of running shaft 21 rotations in aggregates is not counteracted.In the bearing space that above-mentioned bearing outer ring 19Ba, bearing inner race 19Bb and a pair of sealing plate 19Be, 19Be surround, enclose gelatinous lubricating grease G, rolling element 19Bd often keeps impregnated in the state among the lubricating grease G.Lubricating grease G keeps certain viscosity, and because its capillary existence, needn't worry its from above-mentioned gap h to external leaks, bearing 19B is as long as in the life span of the lubrication property of lubricating grease G etc., just can often obtain stable lubricating.
Bearing 19B also can be the same with the 2nd example shown in Figure 4 two side by side.Again, can be the same with above-mentioned the 2nd example, be provided with the sealed department that seals between the bearing 19B of Fig. 5 and turbine 13 and the generator 10, lubricating grease G can not leaked to turbine 13 1 sides and generator 10 1 sides.
Under the situation of this 3rd example; The subsidiary engine kind equipment of lubricant oil supply passage 42 that uses in supply passage the 20, the 2nd example that does not need to use in the 1st example and jet pump 43 that kind; Therefore can seek simplified structure; And so long as in the lubricating grease life span, maintenance does not need repairing yet.
As stated, with reference to accompanying drawing preferred example is illustrated above, for a person skilled in the art,, just can changes places and expect its various changes and modification at self-explantory range content as long as watch this specification.Thereby such change and modification should be interpreted as the scope that belongs to claim of the present invention.
Symbol description
The C cooling medium;
G lubricating grease;
The M working medium;
L lubricant oil;
U turbine generation unit;
10 generators;
13 turbines;
15 thermals source
16 vaporizers;
The 16a heat-transfer pipe;
17 condensers;
18 medium transport pumps
19 bearings;
The grease-enclosed profile shaft of 19B holds;
20 supply passages;
26 injection pipes;
27 recycle pumps;
28 decompressors;
29 peripheral passages;
30 medium channel;
The 30a gas phase media is carried the road;
The 30b gas phase media reclaims the road;
The 30c liquid phase medium is carried the road;
35 return paths;
39 sealed departments;
40 lubrication systems;
41 lubricating oil tanks;
42 lubricant oil supply passages
43 jet pumps.
Claims (11)
1. a heat recovery turbine system possesses
The turbine that drives by working medium,
The vaporizer that utilizes the heat exchange of carrying out with waste heat to make to be supplied to said turbine after the said working medium vaporized from external heat source and
Make condenser through the working medium liquefaction of said turbine,
Said working medium comprises the compound from a group of hydrogen fluorine ether (HFE) and fluorinated alohol, selected as main medium.
2. heat recovery turbine system according to claim 1 is characterized in that, said main medium is the HFE of its boiling point-24～60 ℃ of scopes.
3. heat recovery turbine system according to claim 2 is characterized in that, as the boiling point under the normal pressure of the HFE of said main medium above 30 ℃.
4. according to each the described heat recovery turbine system in the claim 1～3, it is characterized in that said main medium is that carbon number is 2～4 HFE.
5. heat recovery turbine system according to claim 1 is characterized in that HFE is from C
3F
7OCH
3, C
4F
9OCH
3, C
4F
9OC
2H
5, and C
6F
13OCH
3The compound of selecting in this a group.
6. heat recovery turbine system according to claim 4 is characterized in that HFE is CHF
2-CF
2-O-CH
2-CF
3
7. according to each the described heat recovery turbine system in the claim 1～6, it is characterized in that said working medium is in said main medium, to mix the working medium that has the lubricant oil of intermiscibility with this main medium.
8. heat recovery turbine system according to claim 7 is characterized in that said lubricant oil is fluorocarbon oil.
9. heat recovery turbine system according to claim 7 is characterized in that, also possesses the supply passage that said working medium is supplied to the bearing of said turbine.
10. according to each the described heat recovery turbine system in the claim 1～6; It is characterized in that; Possess the lubrication system of the bearing supplying lubricating oil of said turbine and the sealed department that will between the said bearing of the running shaft periphery of said turbine and turbine, seal, said lubrication system has the ejection section that lubricant oil is sprayed to said bearing.
11. each the described heat recovery turbine system according in the claim 1～6 is characterized in that the bearing of said turbine is that grease-enclosed grease lubrication profile shaft is held.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-193695 | 2009-08-24 | ||
| JP2009193695A JP5400534B2 (en) | 2008-11-20 | 2009-08-24 | Waste heat recovery turbine system |
| PCT/JP2010/004576 WO2011024375A1 (en) | 2009-08-24 | 2010-07-14 | Waste heat recovery turbine system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102472122A true CN102472122A (en) | 2012-05-23 |
Family
ID=43628718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800352180A Pending CN102472122A (en) | 2009-08-24 | 2010-07-14 | Waste heat recovery turbine system |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR101317038B1 (en) |
| CN (1) | CN102472122A (en) |
| TW (1) | TWI443255B (en) |
| WO (1) | WO2011024375A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460555A (en) * | 2013-12-18 | 2017-02-22 | 诺沃皮尼奥内股份有限公司 | Apparatus for sealing an internal environment of a turbomachine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6083420B2 (en) * | 2014-08-05 | 2017-02-22 | トヨタ自動車株式会社 | Cooling device for internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63144737A (en) * | 1986-12-08 | 1988-06-16 | Fuji Electric Co Ltd | Generation set containing piping |
| JP2005264863A (en) * | 2004-03-19 | 2005-09-29 | Ebara Corp | Power generating device |
| JP2007503546A (en) * | 2003-08-27 | 2007-02-22 | ティーティーエル ダイナミクス リミッテッド | Energy recovery system |
| JP2008542629A (en) * | 2005-06-10 | 2008-11-27 | シティ ユニヴァーシティ | pump |
-
2010
- 2010-07-14 CN CN2010800352180A patent/CN102472122A/en active Pending
- 2010-07-14 KR KR1020127003197A patent/KR101317038B1/en active IP Right Grant
- 2010-07-14 WO PCT/JP2010/004576 patent/WO2011024375A1/en active Application Filing
- 2010-07-29 TW TW099125250A patent/TWI443255B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63144737A (en) * | 1986-12-08 | 1988-06-16 | Fuji Electric Co Ltd | Generation set containing piping |
| JP2007503546A (en) * | 2003-08-27 | 2007-02-22 | ティーティーエル ダイナミクス リミッテッド | Energy recovery system |
| JP2005264863A (en) * | 2004-03-19 | 2005-09-29 | Ebara Corp | Power generating device |
| JP2008542629A (en) * | 2005-06-10 | 2008-11-27 | シティ ユニヴァーシティ | pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460555A (en) * | 2013-12-18 | 2017-02-22 | 诺沃皮尼奥内股份有限公司 | Apparatus for sealing an internal environment of a turbomachine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101317038B1 (en) | 2013-10-11 |
| WO2011024375A1 (en) | 2011-03-03 |
| TWI443255B (en) | 2014-07-01 |
| KR20120042934A (en) | 2012-05-03 |
| TW201111617A (en) | 2011-04-01 |
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Application publication date: 20120523 |