CN103982328B - U-shaped heat recovery unit for diesel engine waste heat generation ORC (organic Rankine cycle) systems - Google Patents
U-shaped heat recovery unit for diesel engine waste heat generation ORC (organic Rankine cycle) systems Download PDFInfo
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- CN103982328B CN103982328B CN201410178717.5A CN201410178717A CN103982328B CN 103982328 B CN103982328 B CN 103982328B CN 201410178717 A CN201410178717 A CN 201410178717A CN 103982328 B CN103982328 B CN 103982328B
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- 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
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- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a U-shaped heat recovery unit for diesel engine waste heat generation ORC (organic Rankine cycle) systems, which comprises a first-stage high-temperature waste heat recoverer, a second-stage waste heat recoverer, a flanged metal connecting elbow and flanged corrugated pipes, the flanged metal connecting elbow is between the two stages of waste heat recoverers, and the flanged corrugated pipes are used for connecting engine tail gas exhaust pipes with the flanged metal connecting elbow. By adopting the high-efficiency compact automobile heat exchanger enhanced heat transfer technique and combining with the characteristic of engine tail gas that carbon can be easily deposited to cause blockage, the invention designs the unit with the two stages of engine tail gas heat absorbers, consequently, the heat of high-temperature engine tail gas can be efficiently absorbed and utilized by an engine waste heat generation ORC system, and coolant decomposition which takes place when the heat of high-temperature tail gas is absorbed by coolant as working medium in the ORC system is prevented.
Description
Technical field
Patent of the present invention relate to Waste Heat Recovery and utilizes field, especially relates to the one of engine waste heat recovery orc system
Plant motor exhaust waste heat recovery plant.
Background technology
With energy-intensive aggravation, the utilization ratio improving the energy becomes more and more important.Energy-saving and emission-reduction become current
Most important problem.And the orc system based on Organic Rankine Cycle, the utilization to various industrial exhaust heats or used heat, be one very
The technology of good lifting efficiency of energy utilization.
The efficiency of energy utilization ratio of electromotor is relatively low, and generally 40% about, remaining 60% heat dissipates in a variety of manners
Lose and enter air.In electromotor various forms used heat, maximum with engine exhaust used heat proportion.Sending out based on orc principle
Motivation waste-heat power generation, becomes the hot issue of engine research at present, becomes of future generation and improves the one of Fuel Economy
Individual important measures or means.The exhaust gas temperature of wherein motor exhaust is up to more than 600 DEG C, in recent years, in order to improve electromotor
Efficiency and power output, electromotor forward direction high pressure-charging and two-stage pressurization bipolar cooling direction develop.Meanwhile, with Abgasgesetz
Lifted further, to electromotor high pressure-charging and noxEmission request is also higher, so that engine exhaust temperature is higher.In orc system
In system, the heat how absorbing motor exhaust becomes a key point of electromotor orc system.Such as, how to avoid orc system
The coolant that in system, refrigerant medium is caused with high-temp waste gas heat absorption decomposes, how compacter on spatial volume.
Content of the invention
The present invention is to solve the problems referred to above that prior art exists, it is desirable to provide one kind is effectively used for electromotor and gives up
The heat recoverer of hot generating orc system.
For solving the above problems, the present invention employs the following technical solutions: a kind of for diesel engine waste-heat power generation orc system
U-shaped heat recoverer, returns including first order high temperature waste hot withdrawer, second level waste heat recoverer, described first order high temperature waste hot
Receive the flanged metal winding pipe between device, second level waste heat recoverer, be used for and engine exhaust emission pipe and flanged gold
Belong to bend pipe connect flanged (FLGD) corrugated tube it is characterised in that:
Described first order high temperature waste hot withdrawer include by shell, flat tube and the thermofin within flat tube, flat tube with
Play between flat tube and support the section turbulence fin acting on augmentation of heat transfer and be enclosed in the outside mainboard being connected flat tube with two ends of flat tube
The jacket water wing passage and setting being constituted jacket water water inlet pipe and water outlet pipe on the housing；
Described second level waste heat recoverer is included by shell, flat tube and the thermofin within flat tube, flat tube and flat tube
Between play and support and the turbulence fin of augmentation of heat transfer effect and be enclosed in the outside mainboard being connected flat tube with two ends of flat tube and constituted
Coolant media passage and coolant inlet/outlet pipe.
A kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system of the present invention, using high-efficiency compact automobile
Summarization on heat transfer enhancement in heat exchangers, and it is easy to the characteristic of clogged with soot with reference to motor exhaust, devise and there are two stage motors
The device of waste-gas heat absorber, realizes the heat efficient absorption to engine high-temperature tail gas for the engine waste heat generating orc system
And utilization, it is to avoid the coolant that in orc system, refrigerant medium is caused with high-temp waste gas heat absorption decomposes.
According to the present invention, realized to the first order by flanged metal winding pipe between the first order and second level withdrawer and
The connection of second level heat recoverer.Meanwhile, realized and motor exhaust exhaustor and metal with the corrugated tube with flange
The connection of bend pipe.Corrugated tube is used for expanding with heat and contract with cold, to reduce the thermal stress within two-stage waste heat recovery unit.
As a further improvement on the present invention, because the heat transfer coefficient of liquid jacket water is big, described first order high temperature waste hot
Turbulence fin in withdrawer makes discontinuous, is constituted by discontinuous 2～3 sections.Described turbulence fin be plain fin or
Serrated fin, highly for 3～5mm.
As the further improvement of the present invention, in first order high temperature waste hot withdrawer, it is cylinder sleeve of engine inside it
Cooling water and high-temp waste gas carry out heat exchange, absorb high-temp waste gas heat, thermofin flat tube within using corrugated fin or
Plain fin.While augmentation of heat transfer, motor exhaust carbon distribution to be reduced, and be easy to carbon distribution cleaning, its spacing of fin is 4
～6mm.
As the further improvement of the present invention, jacket water with down current arrangement is become on exhaust gas flow direction, water inlet pipe and water outlet pipe is in space
In arrangement, inlet exhaust gas mainboard side be water inlet pipe, outlet side mainboard side be outlet pipe, and two described water pipes using under enter
On go out.Down current arrangement both can sufficiently absorb the heat of waste gas, is also prevented from being vaporized into water steaming in water out side during counter-flow arrangement
Gas.
As the further improvement of the present invention, in described second level waste heat recoverer, it is through heat exchange inside it
Waste gas afterwards and the heat exchange of refrigerant medium, the thermofin within flat tube is using uninterruptedly continuous corrugated fin or flat
Straight fins, spacing of fin is 4-6mm.
As the further improvement of the present invention, in described second level waste heat recoverer, rise between flat tube and flat tube
Support and the turbulence fin of augmentation of heat transfer effect is serrated fin, fin height is 6～9mm it is recommended that being 7.5mm.Compare
Liquid jacket water, refrigerant medium is liquid-vapor mixture or gaseous state, and heat transfer coefficient is low, and therefore turbulence fin makes non-discontinuous
It is ensured that fully absorbing the heat of waste gas；The height of saw tooth fin is highly identical with the internal enhanced heat transfer fin of flat tube.
As the further improvement of the present invention, in the waste heat recoverer of the second level, refrigerant medium becomes with exhaust gas flow direction
Down current arrangement, coolant inlet/outlet pipe, on space is arranged, is refrigerant import pipe in inlet exhaust gas mainboard side, and outlet side mainboard side is cold
Matchmaker's outlet, and adopt bottom in and top out.Down current arrangement both can sufficiently absorb the heat of waste gas it is ensured that gaseous coolant working medium is suitable
Profit is discharged, and is also prevented from refrigerant exit pipe fittings refrigerant temperature during counter-flow arrangement too high and decompose.
As the further improvement of the present invention, first order high temperature waste hot withdrawer is compared with second level waste heat recoverer,
Flat tube spacing smaller it is ensured that the making full use of and prevent waste gas carbon deposit in the waste heat recoverer of the second level, simultaneously of waste-gas heat
Enhance two grades of used heat absorber medium side heat-transfer capabilities.
As the further improvement of the present invention, in described first order high temperature waste hot withdrawer and second level waste heat recoverer
Flat tube arragement direction be mutually perpendicular to so that waste gas uniformly can flow in withdrawer, strengthen heat exchange.
Additionally, the present invention realizes the connection with motor exhaust exhaustor using the corrugated tube with flange, corrugated tube is used
In expanding with heat and contract with cold, to reduce the thermal stress within two-stage waste heat recovery unit.
Brief description
The invention will be further described with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the enlarged drawing at place in Fig. 1.
Fig. 3 is the enlarged drawing at place in Fig. 1.
Fig. 4 be in Fig. 1 a to enlarged drawing.
Fig. 5 be in Fig. 1 b to enlarged drawing.
Fig. 6 be in Fig. 1 c-c to cutaway view Amplified image.
Fig. 7 be in Fig. 1 e-e to cutaway view Amplified image.
Specific embodiment
Referring to the drawings, a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system of the present invention, including
One-level high temperature waste hot withdrawer 12, second level waste heat recoverer 10, first order high temperature waste hot withdrawer 12 and second level used heat return
Receive the flange metal winding pipe 7 of band between device 10, the band method for being connected with engine exhaust emission pipe and flanged metal winding pipe 7
Blue corrugated tube 1.
Wherein, first order high temperature waste hot withdrawer 12 is included by metal thin-wall shell 3, flat tube 5 and the strengthening within flat tube
Play between thermofin 13, flat tube and flat tube support and augmentation of heat transfer effect discontinuous 2～3 sections of turbulence fins 4 of interruption and
It is enclosed in the jacket water wing passage that the outside mainboard 11 being connected flat tube with two ends of flat tube constituted and be arranged on described shell 3
Jacket water water inlet pipe and water outlet pipe 14,6.
Second level waste heat recoverer 10 is included by metal thin-wall shell 19, flat tube 8 and the enhanced heat transfer fin within flat tube
18th, play the uninterruptedly continuous turbulence fin 9 of support and augmentation of heat transfer effect between flat tube and flat tube and be enclosed in outside flat tube
It is connected coolant media passage and the coolant inlet/outlet pipe 16,17 that the mainboard 15 of flat tube is constituted with two ends.
In first order high temperature waste hot withdrawer 12, it is that engine cylinder jacket water carries out heat friendship with high-temp waste gas inside it
Change, absorb high-temp waste gas heat, the thermofin 13 within flat tube adopts corrugated fin or plain fin；Flat tube and flat tube it
Between play strengthen support and augmentation of heat transfer effect turbulence fin 4 be plain fin or serrated fin.Due to liquid jacket water
Heat transfer coefficient is big, and therefore turbulence fin 4 makes discontinuous.The height of turbulence fin 4, that is to say distance between flat tube and flat tube
For 3～5mm.The fin 13 of the internal augmentation of heat transfer of flat tube, while augmentation of heat transfer, will reduce motor exhaust carbon distribution, and
It is easy to carbon distribution cleaning, its spacing of fin is 4～68mm, fin type is the non-interruption class fin such as ripple type or flat type.
Jacket water becomes down current arrangement with exhaust gas flow direction.Water inlet pipe and water outlet pipe 14,6 space arrange on, in inlet exhaust gas mainboard
Side is water inlet pipe 14, and outlet side mainboard side is outlet pipe 6.Two water pipes adopt bottom in and top out.Down current arrangement both can be sufficient
Absorb the heat of waste gas, be also prevented from being vaporized into vapor in water out side during counter-flow arrangement.
In second level waste heat recoverer 10, it is that the heat of waste gas after heat exchange and refrigerant medium is handed over inside it
Change, the thermofin 18 within flat tube 8 adopts corrugated fin or plain fin, spacing of fin is 6-8mm；Between flat tube and flat tube
Play and support the fin 9 with augmentation of heat transfer effect to be serrated fin, fin height is 6～9mm it is recommended that being 7.5mm.Compare liquid
State jacket water, refrigerant medium is liquid-vapor mixture or gaseous state, and heat transfer coefficient is low, and therefore turbulence fin 9 makes non-discontinuous,
Ensure to fully absorb the heat of waste gas；The height of saw tooth fin is highly identical with the internal enhanced heat transfer fin of flat tube.
In the waste heat recoverer of the second level, refrigerant medium with down current arrangement is become on exhaust gas flow direction, coolant inlet/outlet pipe 16,17 exists
Space arrangement on, inlet exhaust gas mainboard side be refrigerant import pipe 16, outlet side mainboard side be refrigerant exit pipe 17, using under enter
On go out.Smoothly discharged with guarantee gaseous coolant working medium.Down current arrangement both can sufficiently absorb the heat of waste gas it is ensured that gaseous state is cold
Matchmaker's working medium is smoothly discharged, and is also prevented from refrigerant exit pipe fittings refrigerant temperature during counter-flow arrangement too high and decompose.
First order high temperature waste hot withdrawer 12 is compared with second level waste heat recoverer 10, and flat tube spacing tn is little, do so
Purpose be to ensure that making full use of and preventing waste gas carbon deposit in the waste heat recoverer of the second level of waste-gas heat, and strengthening
Two grades of used heat absorber medium side heat-transfer capabilities.
Realize the connection with motor exhaust exhaustor with the corrugated tube 1 with flange.Meanwhile, corrugated tube is cold for flatulence of heat type
Contracting, to reduce the thermal stress within two-stage waste heat recovery unit.In first order high temperature waste hot withdrawer and second level Waste Heat Recovery
Pass through metal tubes 7 between device to realize connecting, and two-stage waste heat recoverer respective flat tube arragement direction direction in 90 °, so
The purpose done is so that waste gas uniformly can flow in withdrawer, strengthens heat exchange..
It is understood that above-described embodiment is the description of the invention, rather than limitation of the present invention, any
Without departing from the innovation and creation in the range of true spirit, each fall within protection scope of the present invention.
Claims (10)
1. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system, including first order high temperature waste hot withdrawer
(12), second level waste heat recoverer (10), described first order high temperature waste hot withdrawer (12) and second level waste heat recoverer (10)
Between flanged metal winding pipe (7), for the band method that is connected with engine exhaust emission pipe and flanged metal winding pipe (7)
Blue corrugated tube (1) it is characterised in that:
Described first order high temperature waste hot withdrawer (12) is included by shell (3), flat tube (5) and the thermofin within flat tube
(13), play the turbulence fin (4) of support and augmentation of heat transfer effect between flat tube and flat tube and be enclosed in flat tube outside with two ends even
Connect the jacket water wing passage that the mainboard (11) of flat tube constituted and be arranged on the jacket water water inlet pipe and water outlet pipe on described shell (3)
(14、6)；
Described second level waste heat recoverer (10) include by shell (19), flat tube (8) and the thermofin (18) within flat tube,
Play between flat tube and flat tube support and augmentation of heat transfer effect turbulence fin (9) and be enclosed in flat tube outside be connected flat tube with two ends
The coolant media passage that constituted of mainboard (15) and coolant inlet/outlet pipe (16,17).
2. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 1, its feature exists
Turbulence fin (4) in described first order high temperature waste hot withdrawer (12) is discontinuous 2～3 sections of interruption.
3. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 2, its feature exists
Turbulence fin (4) in described first order high temperature waste hot withdrawer (12) is plain fin or serrated fin, described turbulent flow
The height of fin (4) is 3～5mm.
4. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 1, its feature exists
In in described first order high temperature waste hot withdrawer (12), the internal thermofin (13) of flat tube (5) adopts corrugated fin or flat
Straight fins, its spacing of fin is 4～6mm.
5. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 1, its feature exists
In jacket water with down current arrangement is become on exhaust gas flow direction, water inlet pipe and water outlet pipe (14,6) space arrange on, in inlet exhaust gas mainboard side be
Water inlet pipe (14), outlet side mainboard side is outlet pipe (6), and described water inlet pipe and water outlet pipe (14,6) adopts bottom in and top out.
6. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 1, its feature exists
In in described second level waste heat recoverer (10), the internal thermofin (18) of its flat tube (8) is corrugated fin or straight
Fin, spacing of fin is 4-6mm.
7. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 1, its feature exists
Between the turbulence fin (9) in the waste heat recoverer of the second level, playing support and augmentation of heat transfer effect between flat tube and flat tube is non-
The serrated fin of disconnected formula, fin height is 6～9mm.
8. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 1, its feature exists
In in the waste heat recoverer of the second level, refrigerant medium with down current arrangement is become on exhaust gas flow direction, coolant inlet/outlet pipe (16,17) is in space
In arrangement, it is refrigerant import pipe (16) in inlet exhaust gas mainboard side, outlet side mainboard side is under refrigerant exit pipe (17), and employing
Go out on entering.
9. a kind of u-shaped heat recoverer for diesel engine waste-heat power generation orc system as claimed in claim 1, its feature exists
Compare with second level waste heat recoverer (10) in first order high temperature waste hot withdrawer (12), flat tube spacing (tn) is smaller.
10. a kind of u-shaped heat recovery for diesel engine waste-heat power generation orc system as described in claim 1-9 any one
Device is it is characterised in that flat tube arrangement side in described first order high temperature waste hot withdrawer (12) and second level waste heat recoverer (10)
To being mutually perpendicular to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178717.5A CN103982328B (en) | 2014-04-29 | 2014-04-29 | U-shaped heat recovery unit for diesel engine waste heat generation ORC (organic Rankine cycle) systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178717.5A CN103982328B (en) | 2014-04-29 | 2014-04-29 | U-shaped heat recovery unit for diesel engine waste heat generation ORC (organic Rankine cycle) systems |
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| Publication Number | Publication Date |
|---|---|
| CN103982328A CN103982328A (en) | 2014-08-13 |
| CN103982328B true CN103982328B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410178717.5A Active CN103982328B (en) | 2014-04-29 | 2014-04-29 | U-shaped heat recovery unit for diesel engine waste heat generation ORC (organic Rankine cycle) systems |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105890401B (en) * | 2015-01-26 | 2018-01-02 | 江苏鹏飞集团股份有限公司 | Spiral industrial association waste gas residual heat depth recycling module and the device containing the module |
| CN105953617B (en) * | 2016-05-04 | 2018-05-15 | 浙江银轮机械股份有限公司 | A kind of fuse for motor exhaust vaporizer-superheater |
| US10428713B2 (en) | 2017-09-07 | 2019-10-01 | Denso International America, Inc. | Systems and methods for exhaust heat recovery and heat storage |
| CN109186130A (en) * | 2018-10-19 | 2019-01-11 | 中国恩菲工程技术有限公司 | Net for air-source heat pump units and return air residual heat in mine recovery system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07324884A (en) * | 1994-05-31 | 1995-12-12 | Showa Alum Corp | Corrugated fin for heat exchanger |
| CN2881504Y (en) * | 2006-01-12 | 2007-03-21 | 浙江银轮机械股份有限公司 | Exhaust gas recirculation cooler capable of preventing thermal deformation |
| CN200989743Y (en) * | 2006-10-27 | 2007-12-12 | 浙江银轮机械股份有限公司 | Plate-fin heat exchanger |
| CN201196539Y (en) * | 2008-03-28 | 2009-02-18 | 中国石油化工股份有限公司 | L-shaped triple heat exchanger structure |
| CN201364052Y (en) * | 2009-01-12 | 2009-12-16 | 张家港市华菱化工机械有限公司 | Shell-and-tube heat exchanger |
| DE102012216452A1 (en) * | 2012-09-14 | 2014-03-20 | Eberspächer Exhaust Technology GmbH & Co. KG | Heat exchanger |
| CN203114460U (en) * | 2013-01-17 | 2013-08-07 | 浙江银轮机械股份有限公司 | U-shaped plate fin type EGR cooler |
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Denomination of invention: A U-type heat recovery device for Orc system of diesel waste heat power generation Effective date of registration: 20210610 Granted publication date: 20170125 Pledgee: Bank of China Limited by Share Ltd. Tiantai County branch Pledgor: ZHEJIANG YINLUN MACHINERY Co.,Ltd. Registration number: Y2021330000510 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
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Date of cancellation: 20220627 Granted publication date: 20170125 Pledgee: Bank of China Limited by Share Ltd. Tiantai County branch Pledgor: ZHEJIANG YINLUN MACHINERY Co.,Ltd. Registration number: Y2021330000510 |