CN103953491B - A kind of hydrodynamic(al) cooling tower directly drives radial water turbine - Google Patents

A kind of hydrodynamic(al) cooling tower directly drives radial water turbine Download PDF

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Publication number
CN103953491B
CN103953491B CN201310332529.9A CN201310332529A CN103953491B CN 103953491 B CN103953491 B CN 103953491B CN 201310332529 A CN201310332529 A CN 201310332529A CN 103953491 B CN103953491 B CN 103953491B
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runner
ratio
water
seat ring
stator
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CN103953491A (en
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周大庆
郑源
张晓石
屈波
张在滨
柳冲
丁惠华
陈洋
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The abundant energy-conservation Science and Technology Ltd. of Jiangsu He Haijia
Hohai University HHU
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Abundant Energy-Conservation Science And Technology Ltd Of Jiangsu He Haijia
Hohai University HHU
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

A kind of hydrodynamic(al) cooling tower directly drives radial water turbine <b>, and </b> relates to the technical field of water turbine, relates in particular to a kind of hydrodynamic(al) cooling tower and directly drives radial water turbine.The present invention includes spiral case, be arranged on internal placement on spiral case and have the seat ring of stator, runner and conical draft tube, spiral case water outlet is connected with draft tube (8) water intake with runner water intake, runner water outlet in turn with stator water intake, stator water outlet, axle lower end is connected with bearing support, runner and draft cone downwards successively, axle upper end connects cooling blower, and described water turbine is the low-specific-speed water turbine that specific speed is less than 60m.kW.Present invention achieves structure simple, easy to process, low cost of manufacture, large efficiency of exerting oneself is high, is suitable for the hydraulic turbine of cooling tower of large-scale promotion, energy-efficient object.

Description

A kind of hydrodynamic(al) cooling tower directly drives radial water turbine
Technical field
The present invention relates to the technical field of water turbine, relate in particular to a kind of hydrodynamic(al) cooling tower and directly drive radial water turbine.
Background technique
Water turbine is a kind of hydraulic prime mover that water can be converted to rotating mechanical energy.Because industrial cooling tower circulation loop hydraulic pressure needs safe clearance and Model of pump to select too conservative, the water in cooling tower circulating water system can often have more than needed, just becomes dump energy.Water turbine for cooling tower converts dump energy the mechanical energy that pivots to, thus drives blower fan to rotate, and instead of the driving arrangement motor of blower fan.
Due to the restriction of cooling tower working environment, hydraulic turbine of cooling tower has its particularity compared with water turbine, therefore has very important significance to the research of this kind of water turbine.In order to improve the working efficiency of water turbine, wherein important problem solves turbine size will adapt to cooling tower limited installation space, and with the problem such as power of fan, rotating speed mate.
Summary of the invention
It is simple that the object of the invention is to provide a kind of structure, and easy to process, low cost of manufacture, large efficiency of exerting oneself is high, is suitable for the hydraulic turbine of cooling tower of large-scale promotion, and energy-efficient hydrodynamic(al) cooling tower directly drives radial-flow type water wheels.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of hydrodynamic(al) cooling tower of the present invention directly drives radial water turbine, it comprises spiral case, be arranged on internal placement on spiral case the seat ring of stator, runner and conical draft tube, spiral case water outlet is connected with draft tube 8 water intake with runner water intake, runner water outlet in turn with stator water intake, stator water outlet, axle lower end is connected with bearing support, runner and draft cone downwards successively, axle upper end connects cooling blower, and described water turbine is the low-specific-speed water turbine that specific speed is less than 60m.kW.
The unit speed of runner of the present invention for constant, between 37 ~ 57, n is blower fan rated speed, and H is water turbine intake-outlet pressure difference, and D1 is runner water intake diameter; Described runner channel portion size pass is h1 and D1 ratio is 0.095 ~ 0.105, h2 and D1 ratio is 0.218 ~ 0.228, the ratio of D2 and D1 is 0.501 ~ 0.511, described runner comprises crown, lower ring, is clamped in 13 bending tablet blades between crown and lower ring, described crown is curved surface, its bus is three sections of curvature circular arcs do not waited, and the ratio of radius of curvature R 1, R2, R3 and D1 is respectively 1.104 ~ 1.108,0.225 ~ 0.229,0.232 ~ 0.236; Described lower ring is curved surface, its bus is two sections of curvature circular arcs do not waited, and the ratio of radius of curvature R 4, R5 and D1 is respectively 0.385 ~ 0.389,0.194 ~ 0.198, and described curved vane are spoon shape, tortuosity is determined by vane inlet laying angle β 1 and outlet laying angle β 2, and β 1 exists with the difference of β 2 between, described import laying angle β 1 is 106 ° ~ 110 °, and outlet laying angle β 2 is between-42 ° ~-49 °, and curved vane thickness is equal;
Wherein h1 is the water intake diameter that water intake is high, D1 is runner of runner, h2 is the water outlet diameter that runner channel is high, D2 is runner.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of hydrodynamic(al) cooling tower of the present invention directly drives radial water turbine, by reasonably designing coupling, only needing the rated speed n knowing cooling blower, then determining according to Environmental Conditions the value of the water intake diameter D1 of runner can be drawn by inlet and outlet pressure difference H, again according to the value optimization of the water intake diameter D1 of runner determine water turbine each several part optimum size can draw meet rated speed, exert oneself require water turbine, the present invention is directed to the feature of hydraulic turbine of cooling tower, according to the water intake diameter D1 of runner and the relation of cooling blower rotating speed, provide a kind of quick approach of appropriate design water turbine.
A kind of hydrodynamic(al) cooling tower of the present invention directly drives the runner that radial water turbine adopts 13 long equal thickness curved vane, structure is simple, all very convenient to installation from manufacturing, water turbine overall dimensions is little, design power efficiency can remain on more than 87%, optimum hydraulic efficiency can reach 91%, fully reaches energy-efficient object.
Accompanying drawing explanation
Fig. 1 is overall structure front view of the present invention.
Fig. 2 is spiral case cross-section size figure of the present invention.
Fig. 3 is runner sectional view of the present invention.
Fig. 4 is seat ring sectional view of the present invention.
Fig. 5 is stator three-view diagram of the present invention.
Fig. 6 is draft cone schematic diagram of the present invention.
Fig. 7 is the plan view of Fig. 6.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
As Figure 1-4, a kind of hydrodynamic(al) cooling tower of the present invention directly drives radial water turbine, it comprises it and comprises spiral case 1, be arranged on the seat ring up and down 3 that spiral case internal placement has single-row circular symmetric stator 2, runner 7 and conical draft tube 8, spiral case 1 water outlet and stator 2 water intake, stator 2 water outlet and runner 7 water intake, runner 7 water outlet is connected in turn with draft tube 8 water intake, axle 10 lower end downwards successively with bearing support 9, runner 7 and draft cone 11 are connected, axle 10 upper end connects cooling blower, described rotary wheel of water turbine is low-specific-speed runner, specific speed is less than 60m.kW, runner 7 unit speed for constant, its scope is between 37 ~ 57, and n is blower fan rated speed, and H is water turbine intake-outlet pressure difference, and D1 is the water intake diameter of runner 7.
Stator 2 is arranged between seat ring 3 through bearing pin or welding method, and bearing pin is vertical with water (flow) direction.Stator 2 plays a part to support and water conservancy diversion, and number is 13 ~ 16, and stator height b is into water limit height h1; Curved vane 6 are welded between crown 4 and lower ring 5; Draft cone 11 is fixing on the rotary shaft by threaded connection mode, and plays a supporting role to runner 7.
The rated speed n of blower fan just uniquely can determine runner water intake diameter D1, thus determine whole water turbine each several part size after determining with water turbine intake-outlet pressure difference H.Size relationship is as follows: as shown in Figure 1, Figure 3, the unit speed of runner 7 of the present invention for constant, between 37 ~ 57, n is blower fan rated speed, and H is water turbine intake-outlet pressure difference, and D1 is runner water intake diameter; Described runner 7 runner section size relationship is h1 and D1 ratio is 0.095 ~ 0.105, h2 and D1 ratio is 0.215 ~ 0.225, the ratio of D2 and D1 is 0.505 ~ 0.515, described runner 7 comprises crown 4, lower ring 5, is clamped in 13 bending tablet blades 6 between crown 4 and lower ring 5, described crown 4 is curved surface, its bus is three sections of curvature circular arcs do not waited, and the ratio of radius of curvature R 1, R2, R3 and D1 is respectively 1.104 ~ 1.108,0.225 ~ 0.229,0.232 ~ 0.236; Described lower ring 5 is curved surface, its bus is two sections of curvature circular arcs do not waited, the ratio of radius of curvature R 4, R5 and D1 is respectively 0.385 ~ 0.389,0.194 ~ 0.198, described curved vane 6 are in spoon shape, tortuosity is determined by vane inlet laying angle β 1 and outlet laying angle β 2, and the difference of β 1 and β 2 is between 148 ° ~ 159 °, and described import laying angle β 1 is 106 ° ~ 110 °, outlet laying angle β 2 is between-42 ° ~-49 °, and curved vane 6 thickness is equal;
Wherein h1 is the water intake diameter that water intake is high, D1 is runner 7 of runner 7, h2 is the water outlet diameter that runner channel is high, D2 is runner 7.
As shown in Figure 4, seat ring 3 of the present invention comprises the upper seat ring be arranged in parallel, lower seat ring, upper seat ring, the outward edge of lower seat ring is half fillet, the fillet radius R6 of upper seat ring and D1 ratio are 0.015 ~ 0.019, the fillet radius R7 of lower seat ring and D1 ratio 0.009 ~ 0.013, the thickness h 4 of upper seat ring is 0.028 ~ 0.043 with the ratio of D1, the thickness h 6 of lower seat ring is 0.018 ~ 0.033 with the ratio of D1, in seat ring 3, circular diameter L3 and D1 ratio are 1.037 ~ 1.047, the ratio of outside diameter L2 and the D1 of upper seat ring is 1.328 ~ 1.338, the ratio of outside diameter L4 and the D1 of lower seat ring is 1.314 ~ 1.324, in described seat ring 3, stator 2 quantity is 13 ~ 16, stator head upstream face is connected with back side is round and smooth, stator height b is the water intake height h1 of runner 7, and stator adopts symmetrical stator, and in it, the ratio of circular diameter D3, outside diameter D4 and D1 is respectively 1.065 ~ 1.071,1.234 ~ 1.240, wherein D1 is the water intake diameter of runner 7.
As shown in Figure 1, the high h3 of conical draft tube 8 of the present invention and the ratio of runner water intake diameter D1 are 0.25 ~ 0.75, and diffusion angle is 15 ° ~ 30 °.
As shown in Figure 2, spiral case 1 of the present invention is the ratio of elliptical spiral casing, oval cross section major axis a and minor axis b, and the ratio of a ' and b ' is 1.10 ~ 1.35, and the side-to-side dimensions L1 of spiral case 1 and D1 ratio are 2.05 ~ 2.20, and wherein D1 is the water intake diameter of runner 7.
As shown in Figure 6, Figure 7, draft cone 11 of the present invention is right cone type, high h7 and the D1 ratio of draft cone 11 is 0.05 ~ 0.11, wide L6 and D1 ratio is 0.115 ~ 0.125, upper end round platform diameter R8 and D1 ratio are 0.125 ~ 0.135, lower end round platform diameter L5 and D1 ratio are 0.043 ~ 0.053, and wherein D1 is the water intake diameter of runner 7.
A kind of hydrodynamic(al) cooling tower of the present invention directly drives radial water turbine, during work, cooling water enters by spiral case 1 runner that stator 2 formed by intake pipe with certain pressure, flow, runner 7 is entered with certain circular rector that rotates under the guiding of stator 2, and promote runner 7 and rotate, the pressure energy of current and kinetic energy pass to runner 7, make it have rotating mechanical energy and obtain output power, drive fan radiating.

Claims (6)

1. a hydrodynamic(al) cooling tower directly drives radial water turbine, it is characterized in that comprising spiral case (1), be arranged on the seat ring (3) that the upper internal placement of spiral case (1) has stator (2), runner (7) and conical draft tube (8), spiral case (1) water outlet and stator (2) water intake, stator (2) water outlet and runner (7) water intake, runner (7) water outlet is connected in turn with draft tube (8) water intake, axle (10) lower end downwards successively with bearing support (9), runner (7) and draft cone (11) connect, axle (10) upper end connects cooling blower, described water turbine is the low-specific-speed water turbine that specific speed is less than 60m.kW, the unit speed of above-mentioned runner (7) for constant, between 37 ~ 57, n is blower fan rated speed, and H is water turbine intake-outlet pressure difference, and D1 is runner water intake diameter, described runner (7) runner section size relationship is h1 and D1 ratio is 0.095 ~ 0.105, h2 and D1 ratio is 0.218 ~ 0.228, the ratio of D2 and D1 is 0.501 ~ 0.511, described runner (7) comprises crown (4), lower ring (5), is clamped in 11 ~ 15 bending tablet blades (6) between crown (4) and lower ring (5), described crown (4) is curved surface, its bus is three sections of curvature circular arcs do not waited, and the ratio of radius of curvature R 1, R2, R3 and D1 is respectively 1.104 ~ 1.108,0.225 ~ 0.229,0.232 ~ 0.236, described lower ring (5) is curved surface, its bus is two sections of curvature circular arcs do not waited, the ratio of radius of curvature R 4, R5 and D1 is respectively 0.385 ~ 0.389,0.194 ~ 0.198, described curved vane (6) are in spoon shape, tortuosity is determined by vane inlet laying angle β 1 and outlet laying angle β 2, the difference of β 1 and β 2 is between 148 ° ~ 159 °, described import laying angle β 1 is 106 ° ~ 110 °, outlet laying angle β 2 is between-42 ° ~-49 °, and curved vane (6) thickness is equal, wherein h1 is the water intake diameter that water intake is high, D1 is runner (7) of runner (7), h2 is the water outlet diameter that runner channel is high, D2 is runner (7).
2. hydrodynamic(al) cooling tower according to claim 1 directly drives radial water turbine, it is characterized in that above-mentioned stator (2) is for the single-row symmetrical stator that is circular layout.
3. hydrodynamic(al) cooling tower according to claim 1 directly drives radial water turbine, it is characterized in that: above-mentioned seat ring (3) comprises the upper seat ring be arranged in parallel, lower seat ring, upper seat ring, the outward edge of lower seat ring is half fillet, the fillet radius R6 of upper seat ring and D1 ratio are 0.015 ~ 0.019, the fillet radius R7 of lower seat ring and D1 ratio 0.009 ~ 0.013, the thickness h 4 of upper seat ring is 0.028 ~ 0.043 with the ratio of D1, the thickness h 6 of lower seat ring is 0.018 ~ 0.033 with the ratio of D1, the interior circular diameter L3 of seat ring (3) and D1 ratio are 1.037 ~ 1.047, the ratio of outside diameter L2 and the D1 of upper seat ring is 1.328 ~ 1.338, the ratio of outside diameter L4 and the D1 of lower seat ring is 1.314 ~ 1.324, in described seat ring (3), stator (2) quantity is 13 ~ 16, stator head upstream face is connected with back side is round and smooth, stator height b is the water intake height h1 of runner (7), stator adopts symmetrical stator, and in it, the ratio of circular diameter D3, outside diameter D4 and D1 is respectively 1.065 ~ 1.071,1.234 ~ 1.240, wherein D1 is the water intake diameter of runner (7).
4. hydrodynamic(al) cooling tower according to claim 1 directly drives radial water turbine, and it is characterized in that the high h3 of above-mentioned conical draft tube (8) and the ratio of runner water intake diameter D1 are 0.25 ~ 0.75, diffusion angle is 15 ° ~ 30 °.
5. hydrodynamic(al) cooling tower according to claim 1 directly drives radial water turbine, it is characterized in that above-mentioned spiral case (1) is elliptical spiral casing, ratio between oval cross section major axis and oval cross section minor axis is 1.10 ~ 1.35, the side-to-side dimensions L1 of spiral case (1) and D1 ratio are 2.05 ~ 2.20, and wherein D1 is the water intake diameter of runner (7).
6. a kind of hydrodynamic(al) cooling tower according to claim 1 directly drives radial water turbine, it is characterized in that above-mentioned draft cone (11) is for right cone type, high h7 and the D1 ratio of draft cone (11) is 0.05 ~ 0.11, wide L6 and D1 ratio is 0.115 ~ 0.125, upper end round platform diameter R8 and D1 ratio are 0.125 ~ 0.135, lower end round platform diameter L5 and D1 ratio are 0.043 ~ 0.053, and wherein D1 is the water intake diameter of runner (7).
CN201310332529.9A 2013-08-02 2013-08-02 A kind of hydrodynamic(al) cooling tower directly drives radial water turbine Active CN103953491B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103982362A (en) * 2013-10-18 2014-08-13 河海大学 Hydrodynamic direct-drive radial-flow water turbine of cooling tower
CN111496486B (en) * 2020-04-29 2021-10-08 哈尔滨电机厂有限责任公司 Method for integrally processing runner curved surface of model runner crown and drainage cone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201250750Y (en) * 2008-09-16 2009-06-03 河南新飞纪元科技有限公司 Mixed-flow type hydraulic turbine specially for driving cooling tower blower
CN201739069U (en) * 2010-07-20 2011-02-09 河南新飞纪元科技有限公司 Back-flowing deicing water turbine for cooling tower
CA2873584A1 (en) * 2012-07-15 2012-11-22 Henry Obermeyer Hydromotive machine
CN103216374A (en) * 2013-04-02 2013-07-24 河海大学 Low-specific speed small mixed flow water turbine
CN103225584A (en) * 2013-03-19 2013-07-31 河海大学 Micro mixed flow water turbine for high-rise heat supply system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201250750Y (en) * 2008-09-16 2009-06-03 河南新飞纪元科技有限公司 Mixed-flow type hydraulic turbine specially for driving cooling tower blower
CN201739069U (en) * 2010-07-20 2011-02-09 河南新飞纪元科技有限公司 Back-flowing deicing water turbine for cooling tower
CA2873584A1 (en) * 2012-07-15 2012-11-22 Henry Obermeyer Hydromotive machine
CN103225584A (en) * 2013-03-19 2013-07-31 河海大学 Micro mixed flow water turbine for high-rise heat supply system
CN103216374A (en) * 2013-04-02 2013-07-24 河海大学 Low-specific speed small mixed flow water turbine

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