CN104329964B - A kind of high efficiency, low cost tubular type regenerator for miniature gas turbine - Google Patents
A kind of high efficiency, low cost tubular type regenerator for miniature gas turbine Download PDFInfo
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- CN104329964B CN104329964B CN201410454361.3A CN201410454361A CN104329964B CN 104329964 B CN104329964 B CN 104329964B CN 201410454361 A CN201410454361 A CN 201410454361A CN 104329964 B CN104329964 B CN 104329964B
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- heat exchanger
- regenerator
- exchanger tube
- heat exchange
- tubular type
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Abstract
The invention discloses a kind of miniature gas turbine tubular type regenerator, regenerator heat exchanger tube installing hole is arranged according to involute in form on end plate, can increase the installation quantity of product heat cal rod, improves effectiveness of regenerator；4 heat exchanger tubes of two row of arbitrary neighborhood and two row compositions are a heat exchange unit, the serpentine pipe of each heat exchange unit adjacent heat exchange tubes be different name around to, the serpentine pipe of diagonal be of the same name around to, improve the compactness of regenerator；Heat exchanger tube extrudes conehead by pressing plate, it is achieved with the sealing of end plate；Heat exchange box, by bottom plate envelope upper head plate, realizes sealing and the installation of heat exchange box by direct press-fit approach.Compared with conventional tubular regenerator, the tubular type regenerator of the present invention, by the innovation in structure, improves effectiveness of regenerator and compactness, sealing and installing and need not weld, reduces production cost, improves the flexibility ratio of single parts, and maintainability is good.The present invention has simple in construction, and backheat is effective, and production cost is low waits outstanding advantages.
Description
Technical field
The present invention relates to a kind of tubular type regenerator for gas turbine, it is more particularly related to a kind of high efficiency, low cost tubular type regenerator for miniature gas turbine.
Technical background
Miniature gas turbine is the low profile thermal force engine that a class newly-developed gets up, and it is widely used in distributed power supply, cogeneration, stand-by power supply etc..There is the advantages such as size is little, light weight, simple in construction, multi fuel, low noise, low emission, low vibration, low maintenance rate.
Miniature gas turbine is the lasting oil jetting combustion system of a kind of opening.The most high thermal efficiency of miniature gas turbine of early stage only has about 17%, greatly have impact on using and universal of miniature gas turbine；The miniature gas turbine thermal efficiency researched and developed in recent years reaches 26%～30%, and its key technology have employed efficient regenerator exactly.
In regenerator, high-temperature fuel gas from miniature gas turbine turbine carries out heat exchange with the pressure-air flowing through regenerator, heat is flowed to pressure-air by high-temperature fuel gas, thus improve the pressure-air enthalpy entering combustor, not only save fuel, and the thermal efficiency of miniature gas turbine can be improved.
Current Microturbine Recuperators is mainly facial by tubular type, plate-fin and master meter.The heat-transfer surface of tubular type regenerator is circular tube shaped, adopts the modes such as welding, melting welding to seal, and cold and hot end adopts cross-counterflow flow pattern, and effectiveness of regenerator is less than 85%, and compactness is low；The heat-transfer surface of plate-fin recuperator is the quadric surface of the wing formation of stagger arrangement, is sealed by the mode welded, and cold and hot end adopts adverse current flow pattern, and effectiveness of regenerator is more than 90%, and compactness is high；The heat-transfer surface of primary surface type regenerator is the plate of molding, adopts the mode of welding to seal, and cold and hot end adopts adverse current flow pattern, and effectiveness of regenerator is more than 90%, and compactness is high.Compared with plate-fin and primary surface type regenerator, it is big that tubular type regenerator has operating pressure, and operating temperature is high, can carry out the advantages such as media for heat exchange when channel blockage, it is contemplated that the working condition of miniature gas turbine, uses tubular type regenerator to be more suitable for.But, shortcomings such as it is on the low side that current tubular type regenerator exists effectiveness of regenerator, and compactness is not high, and for Microturbine Recuperators ubiquity owing to part dimension is little, backheat pipeline is many, use the mode workloads such as welding big, difficulty and high in cost of production problem.Simultaneously for numerous backheat pipelines, welding makes permanent connection between parts, when Dang Yichu breaks down, replaces or keep in repair very inconvenient, and maintainability is low.Additionally, intensive welding job thermal deformation that parts are caused and thermal stress, affect accuracy and the service life of modular construction.It is thus desirable to a kind of tubular type regenerator, it while improving compactness and effectiveness of regenerator, can have easy to maintenance, seal, install convenient and relatively low production and maintenance cost.
Summary of the invention
The problem such as present invention aim to address that existing tubular type regenerator compactness is low and effectiveness of regenerator is low, and a kind of simple and convenient sealing and installation method are provided, increase the maintainability of tubular type regenerator, reduce cost.
To achieve these goals, the technical scheme is that
A kind of miniature gas turbine tubular type regenerator, regenerator includes the compositions such as heat exchanger tube (4), heat exchange unit (18), pressing plate (7), conehead (5), upper head plate (1), bottom plate (8), steam box (9), cold air box (10).Wherein, heat exchange unit (18) is intersected 4 heat exchanger tubes (4) obtained formed by two row and the two row heat exchanger tube of arbitrary neighborhood, main heat exchanging segment on heat exchanger tube (4) is serpentine pipe (14), heat exchange box includes steam box (9) and cold air box (10), is press-fited by the upper head plate (1) of its correspondence and bottom plate (8) respectively and forms.It is characterized in that: described heat exchanger tube installing hole (2) is arranged according to involute (3) form, ensure the equidistant heat exchanger tube of layout as much as possible (4) on upper head plate (1) limited areal, thus improving the effectiveness of regenerator of regenerator.Serpentine pipe (14) diameter on described heat exchanger tube (4) is equal with pitch, the helix of described heat exchange unit (18) adjacent heat exchange tubes (4) be different name around to, diagonally adjacent helix be of the same name around to, the serpentine pipe (14) making adjacent heat exchange tubes can be mutually nested, shorten the spacing between heat exchanger tube (4), improve the compactness of regenerator.Described heat exchanger tube (4) by pressing plate (7) tight a bolt (6) fix, and make pressing plate (7) extruding conehead (5), the component axially produced realizes the sealing of conehead (5) and end plate and pressing plate by upper head plate sealing surface (15) and pressing plate for sealing face (17), and the component radially of generation realizes the sealing of heat exchanger tube (4) and conehead (5) by heat exchanger tube sealing surface (16).Described steam box (9) is directly press-fited by corresponding upper head plate (1) and bottom plate (8), realizing sealing and installing, the sealing of described cold air box (10) is similar with described steam box (9) method with installation method.By the sealing of described heat exchanger tube (4) and heat exchange box and installation method, avoid welding job, improve production efficiency, while reducing process costs, owing to adopting non-solder connected mode, increase the motility of single parts, trouble unit can be implemented single replacement easily, reduce maintenance cost and maintenance difficulty, and avoid thermal deformation and the thermal stress impact on parts accuracy and service life that parts are caused by intensive welding job.
Accompanying drawing explanation
The heat exchanger tube installing hole that Fig. 1 is the present invention arranges schematic diagram；
Fig. 2 is the regenerator structure schematic diagram of the present invention；
Fig. 3 is the regenerator heat exchanger tube encapsulating structure figure of the present invention；
Fig. 4 is the regenerator operation principle schematic diagram of the present invention.
Drawing illustrates:
1 upper head plate, 2 heat exchanger tube installing holes, 3 involutes, 4 heat exchanger tubes, 5 coneheads, 6 bolts, 7 pressing plates, 8 bottom plate 9 steam boxes, 10 cold air boxes, 11 fuel gas inlet, 12 gas outlets, 13 shells, 14 serpentine pipes, 15 upper head plate sealing surfaces, 16 heat exchanger tube sealing surfaces, 17 pressing plate for sealing faces, 18 heat exchange units.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention is mainly by heat exchanger tube (4), heat exchange unit (18), pressing plate (7), conehead (5), upper head plate (1), bottom plate (8), steam box (9), the parts such as cold air box (10) composition.The arrangement of heat exchanger tube is as shown in Figure 1, heat exchanger tube installing hole (2) is arranged according to involute (3) form, ensure the equidistant heat exchanger tube of layout as much as possible (4) on upper head plate (1) limited areal, improve the effectiveness of regenerator of tubular type regenerator.The structural representation of regenerator is as shown in Figure 2, structure for steam box (9) side describes as follows: serpentine pipe (14) diameter on heat exchanger tube (4) is equal with pitch, the helix of heat exchange unit (18) adjacent heat exchange tubes (4) be different name around to, diagonally adjacent helix be of the same name around to, make the serpentine pipe (14) on adjacent two heat exchanger tubes can be mutually nested, to shorten the spacing between heat exchanger tube (4), improve the compactness of tubular type regenerator.The sealing of regenerator heat exchanger tube such as Fig. 2, shown in 3, heat exchanger tube (4) by pressing plate (7) tight a bolt (6) fix, pressing plate (7) extruding conehead (5) simultaneously, the component axially produced realizes the sealing of conehead (5) and end plate and pressing plate by upper head plate sealing surface (15) and pressing plate for sealing face (17), and the component radially of generation realizes the sealing of heat exchanger tube (4) and conehead (5) by heat exchanger tube sealing surface (16).Steam box (9) is passed through to press-fit direct formation by upper head plate (1) and bottom plate (8), and technique is simple, less costly.Similar with above-mentioned steam box (9) side with the installation method of the sealing of heat exchanger tube (4) and cold air box (10) for cold air box (10) side.The tubular type regenerator work process of the present invention is as shown in Figure 3, the high-temperature tail gas that miniature gas turbine is discharged enters regenerator by fuel gas inlet (11), and flow through from heat exchanger tube (4) outside, discharged by gas outlet (12), outside air is by entering regenerator cold air box (10) after compressor pressure, through numerous heat exchanger tubes (4) and outside high-temperature fuel gas generation heat exchange, temperature raises, and flows through steam box (9) and enters back into combustor.In regenerator, owing to heat exchange makes the air enthalpy of entrance combustor increase, thus reducing Fuel Consumption, improve the thermal efficiency.
Claims (4)
- null1. a miniature gas turbine tubular type regenerator，With 4 heat exchanger tubes (4) of two row of arbitrary neighborhood and two row intersections for a heat exchange unit (18)，It is characterized in that: the heat exchanger tube installing hole (2) of upper head plate (1) is arranged according to involute (3) form，While making full use of upper head plate (1) area，Ensure that described heat exchanger tube (4) equidistant arrangement between any two，The helix of described heat exchange unit (18) adjacent heat exchange tubes (4) be different name around to，The helix of diagonally adjacent heat exchanger tube (4) be of the same name around to，Shorten the spacing between heat exchanger tube (4)，Pressing plate (7) is positioned by bolt (6)，And extrude conehead (5) and realize the sealing of heat exchanger tube (4) and upper head plate (1)，Steam box (9) is by described upper head plate (1) envelope bottom plate (8)，Sealing and the installation of steam box (9) is realized by direct press-fit approach.
- 2. miniature gas turbine tubular type regenerator according to claim 1, it is characterised in that: described heat exchanger tube (4) is arranged according to involute (3) form when mounted.
- 3. miniature gas turbine tubular type regenerator according to claim 1, it is characterised in that: the spacing of the heat exchanger tube (4) that described any two is adjacent is equal.
- 4. miniature gas turbine tubular type regenerator according to claim 1, it is characterised in that: serpentine pipe (14) diameter and pitch on described heat exchanger tube (4) are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454361.3A CN104329964B (en) | 2014-09-09 | 2014-09-09 | A kind of high efficiency, low cost tubular type regenerator for miniature gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410454361.3A CN104329964B (en) | 2014-09-09 | 2014-09-09 | A kind of high efficiency, low cost tubular type regenerator for miniature gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329964A CN104329964A (en) | 2015-02-04 |
| CN104329964B true CN104329964B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410454361.3A Expired - Fee Related CN104329964B (en) | 2014-09-09 | 2014-09-09 | A kind of high efficiency, low cost tubular type regenerator for miniature gas turbine |
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| CN (1) | CN104329964B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552713A (en) * | 2016-08-05 | 2018-02-07 | Rolls Royce Plc | Gas turbine engine recuperator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762641B (en) * | 2020-12-31 | 2022-10-25 | 青岛海尔空调电子有限公司 | Heat regenerator and refrigerating system with same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320632A1 (en) * | 1983-06-08 | 1984-12-13 | Hoechst Ag, 6230 Frankfurt | HEAT EXCHANGER |
| CN2553329Y (en) * | 2002-07-05 | 2003-05-28 | 贵州黎阳机械厂 | Connecting structure of radiator |
| CN2596035Y (en) * | 2002-12-27 | 2003-12-31 | 沈阳黎明航空发动机(集团)有限责任公司 | Mini combustion turbine heat regenerator |
| CN1318817C (en) * | 2004-03-04 | 2007-05-30 | 西安交通大学 | Heat regenerator of original surface for gas turbine |
| CN100402815C (en) * | 2006-10-13 | 2008-07-16 | 西安交通大学 | Process for processing ring-shape original surface heat regenerator for minisize gas turbine |
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2014
- 2014-09-09 CN CN201410454361.3A patent/CN104329964B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552713A (en) * | 2016-08-05 | 2018-02-07 | Rolls Royce Plc | Gas turbine engine recuperator |
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| CN104329964A (en) | 2015-02-04 |
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Granted publication date: 20160706 Termination date: 20160909 |