WO2011070787A1 - スターリングエンジン及びスターリングエンジンを用いた発電装置又は動力装置における伝熱管群の不純物除去方法 - Google Patents

スターリングエンジン及びスターリングエンジンを用いた発電装置又は動力装置における伝熱管群の不純物除去方法 Download PDF

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Publication number
WO2011070787A1
WO2011070787A1 PCT/JP2010/007169 JP2010007169W WO2011070787A1 WO 2011070787 A1 WO2011070787 A1 WO 2011070787A1 JP 2010007169 W JP2010007169 W JP 2010007169W WO 2011070787 A1 WO2011070787 A1 WO 2011070787A1
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WIPO (PCT)
Prior art keywords
heat transfer
transfer tube
stirling engine
tube group
unit
Prior art date
Application number
PCT/JP2010/007169
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English (en)
French (fr)
Japanese (ja)
Inventor
赤澤　輝行
勉 中塚
妙子 田原
修 坂本
Original Assignee
株式会社ｅスター
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Filing date
Publication date
Application filed by 株式会社ｅスター filed Critical 株式会社ｅスター
Priority to CN201090001136XU priority Critical patent/CN202732152U/zh
Priority to EP10835710.4A priority patent/EP2511508B8/en
Priority to US13/394,298 priority patent/US9097206B2/en
Priority to JP2011545092A priority patent/JP5425934B2/ja
Publication of WO2011070787A1 publication Critical patent/WO2011070787A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
    • F02G1/053—Component parts or details
    • F02G1/055—Heaters or coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/34—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely
    • F28F1/36—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending obliquely the means being helically wound fins or wire spirals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
    • F28G13/005—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00 cleaning by increasing the temperature of heat exchange surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2255/00—Heater tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2255/00—Heater tubes
    • F02G2255/10—Heater tubes dome shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F23G2206/202—Waste heat recuperation using the heat in association with another installation with an internal combustion engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0026—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for combustion engines, e.g. for gas turbines or for Stirling engines
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Definitions

  • the present invention particularly relates to a Stirling engine that recovers heat from exhaust gas flowing through a flue.
  • Non-Patent Document 1 the heating unit arranged in the flue is composed of U-shaped tubes arranged in a horizontal row, and the flow of the combustion gas is orthogonal to the row direction of the U-shaped tubes serving as heaters. Thus, the heater temperature distribution is made uniform.
  • FIG. 13 is a perspective view of the main part showing the configuration of the heating unit of the Stirling engine.
  • the heating unit of this Stirling engine has U-tubes 101, 102, 103, 104, 105 of different sizes and similar shapes arranged in the same plane, and each U-tube 101, 102, 103, 104, and 105 are arranged in a horizontal row.
  • the heating unit shown in FIG. 13 makes the flow of the combustion gas orthogonal to the row direction of the U-shaped tubes, as shown by arrows, in the same manner as in Non-Patent Document 1.
  • a high-temperature space is formed between the displacer piston and the heating unit, and a regeneration unit and a cooling unit are disposed on the outer periphery of the displacer piston. Therefore, if one end of each U-shaped tube 101, 102, 103, 104, 105 is located in the high temperature space in the central region and the other end is located in the reproducing portion in the outer peripheral region, the U-shaped tubes 101, 102, 103, 104, 105 can be directly connected to the high-temperature space and the regenerating unit, and the working gas can flow smoothly.
  • FIG. 14 is a perspective view of the flow path separation unit of the Stirling engine shown in FIG. 13 as viewed from the heating unit side.
  • the flow path separation unit 110 includes a first opening 110A and a second opening 110B that communicate with the heating unit.
  • 110A of 1st opening parts are formed in the inner peripheral side of a heating part
  • 110B of 2nd opening parts are formed in the outer peripheral side of a heating part
  • 110A of 1st opening parts and 2nd opening part 110B are heating The part is formed on one side and the other half.
  • the U-shaped tube 101 is at one end side opening 101X and the other end side opening 101Y
  • the U-shaped tube 102 is at one end side opening 102X and the other end side opening 102Y
  • the U-shaped tube 103 is at one end side opening 103X and others.
  • the U-shaped tube 104 is positioned in the one end-side opening 104X and the other end-side opening 104Y
  • the U-shaped tube 105 is positioned in the one end-side opening 105X and the other end-side opening 105Y. .
  • the one end side opening 103X of the U-shaped tube 103, the one end side opening 104X of the U-shaped tube 104, and the one end side opening 105X of the U-shaped tube 105 are located in the first opening 110A. Yes.
  • the other end side opening 101Y of the U-shaped tube 101 and the other end side opening 102Y of the U-shaped tube 102 are located in the second opening 110B.
  • the other end side opening 105Y of the U-shaped tube 105 is configured not to communicate with the heating unit by the flow path separation unit 110 but to be connected to the regeneration unit from the outer peripheral end of the flow path separation unit 110.
  • one end of the U-shaped tubes 101, 102, 103, 104, and 105 is regenerated into a high-temperature space and the other end is regenerated. Can be connected to the department.
  • Non-Patent Document 1 does not disclose the flow path separation unit, but if there is no member corresponding to the flow path separation unit 110 shown in FIG. 13, the working gas is allowed to flow between the high-temperature space and the regeneration unit. I can't. When such a flow path separation unit 110 is provided, resistance is generated with respect to the flow of the working gas, and it is necessary to consider the influence of the non-uniform flow on the high temperature space and the regeneration unit.
  • the present invention provides a Stirling engine that can effectively recover heat from exhaust gas flowing in a flue and can connect a heating unit and a regeneration unit by a working gas pipe without providing a flow path separation unit.
  • a method for removing impurities from a heat transfer tube group in a power generator or power unit using a Stirling engine of the present invention comprises a displacer piston and a power piston, and one space separated by the displacer piston is heated at a high temperature. Space and the other space are set as a low temperature space, a heating unit is arranged at a position facing the displacer piston across the high temperature space, and a regeneration unit and a cooling unit are arranged on the outer periphery of the displacer piston to constitute the heating unit
  • the heat transfer tube group is installed in the flue, the working gas is heated and expanded in the heat transfer tube group, the working gas is cooled and contracted in the cooling section, and the operation is performed between the high temperature space and the low temperature space.
  • the flue is As the removal mode of impurities performed when impurities such as carbon contained in the exhaust gas adhered to the heat transfer tube group, the Stirling engine speed reduction, the Stirling engine operation stop, the Stirling engine operation The power generation amount is reduced or the Stirling engine is reversely rotated.
  • a method for removing impurities from a heat transfer tube group in a power generator or a power unit using a Stirling engine according to claim 2 of the present invention comprises a displacer piston and a power piston, and one space separated by the displacer piston is heated at a high temperature.
  • Space and the other space are set as a low temperature space
  • a heating unit is arranged at a position facing the displacer piston across the high temperature space
  • a regeneration unit and a cooling unit are arranged on the outer periphery of the displacer piston to constitute the heating unit
  • the heat transfer tube group is installed in the flue, the working gas is heated and expanded in the heat transfer tube group, the working gas is cooled and contracted in the cooling section, and the operation is performed between the high temperature space and the low temperature space.
  • the flue is As removal mode of the impurities which impurities such as carbon contained in exhaust gas is performed when adhered to the heat transfer tube group that is characterized by causing the flow rate of the exhaust gas flowing in the flue is increased by a predetermined time.
  • a method for removing impurities from a heat transfer tube group in a power generator or power unit using a Stirling engine of the present invention according to claim 3 comprises a displacer piston and a power piston, and one space separated by the displacer piston is heated at a high temperature.
  • Space and the other space are set as a low temperature space
  • a heating unit is arranged at a position facing the displacer piston across the high temperature space
  • a regeneration unit and a cooling unit are arranged on the outer periphery of the displacer piston to constitute the heating unit
  • the heat transfer tube group is installed in the flue, the working gas is heated and expanded in the heat transfer tube group, the working gas is cooled and contracted in the cooling section, and the operation is performed between the high temperature space and the low temperature space.
  • a method for removing impurities from a heat transfer tube group in a power generation device or power unit using a Stirling engine that moves gas An insertion port for introducing pressurized air or cleaning water is provided, and as a removal mode of the impurity performed when impurities such as carbon contained in the exhaust gas flowing through the flue adhere to the heat transfer tube group, the high-pressure from the insertion port Air or the washing water is supplied to the heat transfer tube group.
  • the temperature drop of the heat transfer tube group is reduced.
  • the high-pressure air or the washing water is supplied from the mouth to the heat transfer tube group.
  • the U-shaped tubes can be efficiently heated.
  • the first through hole group is formed in the central region of the heating unit head more than the second through hole group, one end of the U-shaped tube is used as the through hole of the first through-hole group, and the other end of the U-shaped tube. Is attached to the through hole of the second through hole group, so that the working gas can be circulated between the high-temperature space and the regenerating part by the U-shaped tube, so that the flow path resistance can be reduced.
  • Sectional drawing which shows the structure of the Stirling engine by one Example of this invention.
  • the perspective view which shows the structure of the heating part of the Stirling engine Top view of the heating unit Side view of the heating unit Bottom view of the heating unit Bottom view showing another embodiment of the heating unit of the Stirling engine
  • the perspective view which shows further another Example of the heating part of the Stirling engine Top view of the heating unit Side view of the heating unit Front view of the heating unit Bottom view of the heating unit
  • the principal part perspective view which shows the structure of the heating part of a Stirling engine
  • impurities such as carbon contained in the exhaust gas flowing through the flue adhere to the heat transfer tube group.
  • the flow rate of the exhaust gas flowing through the exhaust gas passage is increased for a predetermined time.
  • the impurities attached to the heat transfer tubes can be skipped by temporarily increasing the exhaust gas flow rate temporarily.
  • a method for removing impurities from a heat transfer tube group in a power generator or power unit using a Stirling engine is provided with an insertion port for introducing high-pressure air or washing water into a flue and flows through the flue.
  • an impurity removal mode performed when impurities such as carbon contained in the exhaust gas adhere to the heat transfer tube group high-pressure air or washing water is supplied from the insertion port to the heat transfer tube group.
  • the impurity adhering to the heat exchanger tube of a heating part can be removed.
  • a temperature drop in the heat transfer tube group is detected. Reduced Stirling engine speed, Stirling engine operation stopped, Stirling engine power generation decreased, Stirling engine reverse rotation, exhaust gas flow rate increased, or high pressure air or washing water from the insertion port To supply. According to this embodiment, the removal timing of impurities in the heat transfer tube group in use can be accurately performed.
  • FIG. 1 is a cross-sectional view showing a configuration of a Stirling engine according to the present embodiment.
  • the Stirling engine according to the present embodiment has a displacer piston 1 and a power piston 2.
  • One space separated by the displacer piston 1 is a high temperature space 3, and the other space is a low temperature space 4.
  • the working gas is moved between the high temperature space 3 and the low temperature space 4.
  • the heating unit 10 is installed and used in a heat source gas flow path for discharging exhaust gas generated from, for example, a diesel engine of a ship.
  • the heating unit 10 is disposed at a position facing the displacer piston 1 across the high temperature space 3, and the regenerating unit 5 and the cooling unit 6 are disposed on the outer periphery of the displacer piston 1.
  • the displacer piston 1 and the power piston 2 are connected to a crankshaft 7, and a generator shaft 8 is connected to one end of the crankshaft 7.
  • the regeneration unit 5 is formed in a cylindrical shape, and a heat storage material such as austenitic stainless steel or brass is provided inside the regeneration unit 5, and the heat storage material absorbs heat from the high-temperature working gas and dissipates heat to the low-temperature working gas. To do.
  • the cooling unit 6 is also formed in a cylindrical shape, and the inside of the cooling unit 6 is divided into a passage through which cooling water flows and a passage through which working gas flows, and the working gas is cooled by the cooling water.
  • the heating unit 10 is connected to the regeneration unit 5, and the regeneration unit 5 is connected to the cooling unit 6.
  • the heating unit 10 communicates with the high temperature space 3, and the cooling unit 6 communicates with the low temperature space 4.
  • the working gas moves between the high temperature space 3 and the low temperature space 4 by operating the displacer piston 1 using the generator as a power source at the start.
  • the working gas is heated and expanded by the heating unit 10 and introduced into the high temperature space 3, and cooled and contracted by the cooling unit 6 and introduced into the low temperature space 4, whereby pressure fluctuations occur in the high temperature space 3 and the low temperature space 4.
  • An output can be obtained by operating the power piston 2 by this pressure fluctuation. That is, by being heated by the heating unit 10, the sealed working gas expands and receives the differential pressure, thereby moving the displacer piston 1 downward.
  • the gas in the low temperature space 4 between the displacer piston 1 and the power piston 2 is compressed, and the power piston 2 is moved downward. Due to the downward movement of the power piston 2, the working gas passes from the upper part of the displacer piston 1 (high temperature space 3), passes through the heating unit 10, the regeneration unit 5, and the cooling unit 6, and below the displacer piston 1 (low temperature space 4). ) As the displacer piston 1 moves upward, the low temperature space 4 between the displacer piston 1 and the power piston 2 becomes low pressure, so that the power piston 2 moves upward.
  • the working gas that has moved to the lower part of the displacer piston 1 passes through the cooling unit 6, the regeneration unit 5, and the heating unit 10 by the upward movement of the power piston 2, and moves to the upper part of the displacer piston 1.
  • the heating gas in the heating unit 10 and the cooling in the cooling unit 6 cause the working gas to reciprocate between the upper and lower portions of the displacer piston 1 while expanding and contracting, thereby moving the displacer piston 1 and the power piston. 2 can be moved to generate electricity.
  • FIGS. 2 is a perspective view showing the configuration of the heating unit of the Stirling engine according to the present embodiment
  • FIG. 3 is a top view of the heating unit
  • FIG. 4 is a side view of the heating unit
  • FIG. 5 is a bottom view of the heating unit.
  • the heating unit 10 of the Stirling engine according to the present embodiment includes a heating unit head 10 a and U-shaped tubes 11, 12, and 13.
  • the heating unit head 10a is formed in a spherical shape having a convex outer surface and a concave inner surface, and the U-shaped tubes 11, 12, and 13 are attached to the outer surface of the heating unit head 10a.
  • FIG. 1 is a perspective view showing the configuration of the heating unit of the Stirling engine according to the present embodiment
  • FIG. 3 is a top view of the heating unit
  • FIG. 4 is a side view of the heating unit
  • FIG. 5 is a bottom view of the heating unit.
  • the heating unit 10 of the Stirling engine according to the present embodiment includes a heating unit
  • the heating unit head 10 a has a plurality of through holes, and the U-shaped tubes 11, 12, and 13 are fixed to these through holes.
  • a first heat transfer tube group A located on the upstream side of the exhaust gas flow and a second heat transfer tube group B located on the downstream side of the exhaust gas flow are formed in the heating unit head 10a.
  • the first heat transfer tube group A and the second heat transfer tube group B are provided symmetrically with respect to the two-part imaginary line Y of the heating unit head 10a in plan view.
  • the heating amount can be increased by providing the first heat transfer tube group A and the second heat transfer tube group B symmetrically.
  • U-shaped tubes 11, 12, 13 for the first heat transfer tube group A
  • U-shaped tubes 11, 12, 13 having different sizes and similar shapes are arranged in the same plane.
  • the U-shaped tubes 11, 12, and 13 are arranged in the column direction.
  • the U-shaped tube 11 has a plurality of U-shaped tubes 11a, 11b, 11c,.
  • a first through hole group 30R communicating with the high temperature space 3 is provided in the central region R of the heating unit head 10a, and a second through hole group 30S communicating with the reproducing unit 5 is provided in the outer peripheral region S of the heating unit head 10a. Is forming.
  • the through holes constituting the second through hole group 30S are arranged in an arc shape.
  • the first through-hole group 30R is also arranged in an arc shape with the same curvature as the second through-hole group 30S. The Then, one end of each of the U-shaped tubes 11, 12, 13 is used as a through-hole constituting the first through-hole group 30R, and the other end of each of the U-shaped tubes 11, 12, 13 is formed as a through-hole constituting the second through-hole group 30S. It is attached to the hole.
  • the parallel exhaust gas passages are formed between the U-shaped tubes 11a, 11b, 11c,...
  • the first through hole group 30R is formed in the central region R of the heating unit head 10a rather than the second through hole group 30S, and one end of each of the U-shaped tubes 11a, 11b, 11c,.
  • the other end of the U-shaped tubes 11a, 11b, 11c,... Is attached to the through-hole of the second through-hole group 30S in the through-hole of 30R, so that the U-shaped tube 11a is connected between the high-temperature space 3 and the regeneration unit 5.
  • 11b, 11c... Can circulate the working gas, so that the flow path resistance can be reduced.
  • the heating amount can be further increased by arranging the U-shaped tubes 11, 12 and 13 having different sizes in the same plane.
  • FIG. 6 is a bottom view showing another embodiment of the heating unit of the Stirling engine.
  • three U-shaped tubes 11, 12, 13 located at both ends of the first heat transfer tube group A and the second heat transfer tube group B have two U-shaped tubes 12, 13 in the configuration of FIG. 6. It has become.
  • the outer peripheral region S in which the distance from the two-part imaginary line Y is shortened. Also, the amount of heating is increased by effectively arranging the U-shaped tubes 12 and 13.
  • the three U-shaped tubes 11, 12, 13 are arranged at any position, but two U-shaped tubes 12, 13 can be arranged at both ends as in the present embodiment. Moreover, you may change the number of pipes of the piping arrange
  • FIGS. 7 is a perspective view showing the configuration of the heating unit of the Stirling engine according to the present embodiment
  • FIG. 8 is a top view of the heating unit
  • FIG. 9 is a side view of the heating unit
  • FIG. 10 is a front view of the heating unit.
  • 11 is a bottom view of the heating unit.
  • the same functions as those in the above embodiment are denoted by the same reference numerals, and description thereof is omitted.
  • the heating unit 10 in the present embodiment further includes a third heat transfer tube group C and a fourth heat transfer tube group D in the heating unit head 10a.
  • the plurality of U-shaped tubes 14 constituting the third heat transfer tube group C and the plurality of U-shaped tubes 15 constituting the fourth heat transfer tube group D are divided into two-part imaginary lines X of the heating unit head 10a in plan view. Are provided symmetrically.
  • the two-part imaginary line X is an imaginary line orthogonal to the two-part imaginary line Y.
  • the U-shaped tubes 14 and 15 constituting the third heat transfer tube group C and the fourth heat transfer tube group D are the U-shaped tubes 11 constituting the first heat transfer tube group A and the second heat transfer tube group B, respectively. , 12 and 13 are enlarged so as to cross over.
  • the amount of heating can be increased by further providing the third heat transfer tube group C and the fourth heat transfer tube group D.
  • the amount of heating can be further increased while maintaining the exhaust gas passage formed by the first heat transfer tube group A and the second heat transfer tube group B.
  • a first through hole group 30R communicating with the high temperature space 3 is provided in the central region R of the heating unit head 10a, and a second through hole group 30S communicating with the reproducing unit 5 is provided in the outer peripheral region S of the heating unit head 10a.
  • the through holes constituting the second through hole group 30S corresponding to the first heat transfer tube group A and the second heat transfer tube group B are arranged in an arc shape.
  • the first heat transfer tube group A and the second heat transfer tube group B are shown using two U-shaped tubes having different sizes, and the first heat transfer tube group A and the second heat transfer tube group A are the same.
  • two circular arcs are formed by the through holes.
  • the first through hole group 30R are also arranged in a circular arc shape having the same curvature as that of the second through-hole group 30S.
  • the second through hole group 30S corresponding to the third heat transfer tube group C and the fourth heat transfer tube group D is the outer peripheral region S of the heating unit head 10a, and the first heat transfer tube.
  • the second through hole group 30S of the group A and the second through hole group 30S of the second heat transfer tube group B are disposed.
  • the first through hole group 30R corresponding to the third heat transfer tube group C and the fourth heat transfer tube group D is the central region R of the heating unit head 10a, and is the first heat transfer tube group A.
  • the first through hole group 30 ⁇ / b> R and the first through hole group 30 ⁇ / b> R of the second heat transfer tube group B are disposed.
  • the internal gas flow by the second through hole group 30S connected to the upper and lower regenerators of the virtual axis Y alleviates non-uniformity in the regenerator, thereby reducing reheat loss and improving performance.
  • FIG. 12 is a partially broken perspective view of a U-shaped tube constituting the heating unit of the Stirling engine according to this embodiment.
  • the U-shaped tube 16 according to the present embodiment is provided with an outer tube 16b formed in a wavy spiral shape on the outer surface of the smooth circular tube 16a. Since the working gas circulates inside the smooth circular pipe 16a, the flow resistance is small, while the exhaust gas flowing in the heat source gas flow path increases the heat transfer area of the outer pipe by the outer pipe 16b, and heat transfer outside the pipe. And heat exchange efficiency can be increased.
  • the outer tube 16b is formed into a corrugated spiral shape, and the smooth circular tube 16a is a straight tube without the corrugated spiral shape.
  • the working gas can be introduced into the outer tube 16b without providing the smooth circular tube 16a. It may be distributed. In this case, the heat transfer area is increased by the corrugated spiral, the working gas flow is disturbed, the Reynolds number is improved in the turbulent flow region, heat transfer is promoted, and the heat exchange efficiency can be increased.
  • the heat exchange efficiency can be increased by making the U-shaped tube material copper.
  • the U-tube material is made of copper
  • a copper or stainless steel material is used for the heating unit head.
  • the U-shaped tube material is made of stainless steel to ensure strength.
  • the U-tube material is made of stainless steel
  • a stainless steel material is used for the heating unit head.
  • the copper or stainless steel U-shaped tube and the heating part head are coated with a chromium-based surface coating, ceramic spray (coating) or Ni Alternatively, durability can be enhanced by applying a surface coating such as carbon coating.
  • a surface coating such as carbon coating.
  • U-tube materials should be used.
  • titanium or nickel chrome alloy the reliability durability can be improved and the weight can be significantly reduced. Titanium material has a density of about 40 to 50% less than stainless material, and has high strength and low density.
  • titanium material can be made thinner than stainless steel tube, and is particularly suitable for Stirling engines used in incinerators and glass melting furnaces.
  • the U-shaped tube material is a titanium material
  • a stainless steel material is used for the heating unit head.
  • a titanium material or a nickel chromium alloy a stainless steel material exhibits good weldability by adjusting the welding conditions, and a U-shaped tube is inserted into the flue that constitutes the exhaust gas flow path. Since the present embodiment is arranged with gaps such as U-shaped tubes 11a, (12, 13) 11b, 11c with respect to soot such as carbon contained in the exhaust gas, a brush penetrating the gap is provided. Prepare and easily pass the brush through the gap between the U-shaped tubes.
  • the heat exchange efficiency can be recovered by periodically removing impurities such as soot adhered to the U-shaped tube with a brush during maintenance.
  • impurities such as soot adhered to the U-shaped tube with a brush during maintenance.
  • FIG. 15 is a configuration diagram for realizing a method for removing impurities from a heat transfer tube group in a power generator or a power unit using the Stirling engine of the present invention.
  • the impurity removal method of the heat transfer tube group demonstrated below is applicable even if it is not the structure of the heat transfer tube group in this invention. In order to eliminate the need for maintenance that prevents a decrease in the heat exchange efficiency of the heat transfer tubes, or to extend the maintenance period, it is necessary to remove impurities from the heat transfer tubes in use.
  • the detection means 41 for detecting a decrease in the temperature of the heat transfer tube (U-shaped tube) serving as the heating unit 10 and the exhaust gas flow rate in the flue 42 are changed.
  • the control means 43 is provided, and the detection means 41 detects a decrease in the heat transfer tube temperature, and the control means 43 temporarily increases the exhaust gas flow rate temporarily, whereby the impurities attached to the heat transfer tube can be skipped.
  • the control means 43 controls, for example, the rotational speed of the blower means 44 as shown in the figure, or controls the ventilation resistance of the flue 42, and changes the exhaust gas flow rate in the flue 42. I just need it.
  • the detecting means 41 may be one that detects the temperature of the heat transfer tube or the high-temperature space 3, but detects a decrease in generated power when used as a power generator, and a decrease in output when used as a power unit. It is preferable to detect. Further, it is preferable that the control means 43 can be set in a plurality of stages according to the exhaust gas flow rate to be increased. The impurities can be effectively removed by changing the exhaust gas flow rate that is increased by the control means 43 in accordance with the lowering temperature. It is also effective to provide timer means for setting the operation time in the control means 43.
  • the operation of increasing the exhaust gas flow rate by the control means 43 may be terminated by detecting that the temperature drop amount of the heat transfer tube is within a predetermined range by the detection means 41. Further, for impurities with high adhesion strength adhering to the heat transfer tube, the impurity removal mode is performed using the Stirling engine operation control means 45. As the impurity removal mode by the Stirling engine operation control means 45, the heater temperature is raised by either reducing the rotational speed of the Stirling engine, stopping the operation of the Stirling engine, or reducing the power generation amount of the Stirling engine. Is effective.
  • the Stirling engine operation control means 45 lowers or stops the rotational speed of the power generator or power unit. Can be realized. Furthermore, it is also effective to reversely rotate the Stirling engine using the Stirling engine operation control means 45 so that the cooling unit 6 functions as a heating unit and the heating unit 10 functions as a cooling unit. According to the impurity removal mode by reverse rotation of the Stirling engine, the heat transfer tube constituting the heating unit 10 becomes a cooling unit, and the heat transfer tube raises the temperature in order to dissipate heat in the heat transfer tube, and the impurities attached to the heat transfer tube Can be peeled off.
  • the impurity removal mode can be performed by the detection means 41 that detects a decrease in the temperature of the heat transfer tube (U-shaped tube). Further, instead of the detection means 41 for detecting a decrease in the temperature of the heat transfer tube (U-shaped tube), an impurity removal mode may be periodically performed for a predetermined processing time. Further, according to the adhesion strength of the impurities, the Stirling engine rotation speed reduction stage, Stirling engine operation stop stage, and Stirling engine reverse rotation stage are set and performed step by step. Also good.
  • an insertion port 46 for introducing high-pressure air or washing water into the flue Control means 43 for instructing supply of high-pressure air or washing water to the heating unit 10 from the insertion port 46, detecting a decrease in the heat transfer tube temperature by the detection means 41, and heating the high-pressure air or washing water by the control means 43
  • a method of reducing the rotational speed of the Stirling engine, and operation of the Stirling engine are performed.
  • these methods may be provided with a plurality of methods in addition to the case where they are performed independently.
  • the heating unit head is inserted and installed in the exhaust gas, but the waste heat is converted into a solid heat source, that is, the U-tube portion is brought into contact with the high temperature portion by solid heat conduction.
  • the method can be implemented by inserting a heat insulating member configured in a furnace facility such as a tunnel furnace around the tube portion to recover energy.
  • a device with electric heater heating such as a CVD device or a diffusion device used in semiconductor manufacturing equipment, an electric furnace used for melting aluminum, or a combustion heating furnace such as natural gas, a material replacement process It is preferable to perform a cooling process using a Stirling engine in the previous process or the cooling process.
  • the time until the temperature of the Stirling engine's heater rises is a little because of the heat conduction of the gas, but most of the effective furnace heat can be absorbed by the Stirling engine, allowing highly efficient energy recovery and cooling. It is easy to control the temperature and there is no waste of cooling more than necessary.
  • the Stirling engine of the present invention can be used as a power generator or a power unit that uses heat source gas such as waste heat or biomass.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
PCT/JP2010/007169 2009-12-09 2010-12-09 スターリングエンジン及びスターリングエンジンを用いた発電装置又は動力装置における伝熱管群の不純物除去方法 WO2011070787A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201090001136XU CN202732152U (zh) 2009-12-09 2010-12-09 使用斯特林发动机的发电装置或动力装置
EP10835710.4A EP2511508B8 (en) 2009-12-09 2010-12-09 Stirling engine and method of removing impurities in a heat-transfer tube group in a power device or a power-generating device which uses a stirling engine
US13/394,298 US9097206B2 (en) 2009-12-09 2010-12-09 Stirling engine and method of removing impurities in a heat-transfer tube group in a power device or a power-generating device which uses a stirling engine
JP2011545092A JP5425934B2 (ja) 2009-12-09 2010-12-09 スターリングエンジン及びスターリングエンジンを用いた発電装置又は動力装置における伝熱管群の不純物除去方法

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JP2009-279218 2009-12-09
JP2009279218 2009-12-09

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WO2011070787A1 true WO2011070787A1 (ja) 2011-06-16

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PCT/JP2010/007165 WO2011070786A1 (ja) 2009-12-09 2010-12-09 スターリングエンジン

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JPWO2011070786A1 (ja) 2013-04-22
EP2511507A4 (en) 2014-12-10
EP2511508A4 (en) 2014-10-22
CN202732151U (zh) 2013-02-13
JP5255126B2 (ja) 2013-08-07
US9097206B2 (en) 2015-08-04
CN202732152U (zh) 2013-02-13
WO2011070786A1 (ja) 2011-06-16
US20120159945A1 (en) 2012-06-28
JP5425934B2 (ja) 2014-02-26
EP2511508B1 (en) 2017-05-03
EP2511508A1 (en) 2012-10-17
EP2511507A1 (en) 2012-10-17
EP2511507B1 (en) 2016-05-11
EP2511508B8 (en) 2017-07-12
US20120159944A1 (en) 2012-06-28
JPWO2011070787A1 (ja) 2013-04-22
US8899037B2 (en) 2014-12-02

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